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prmt1  (BPS Bioscience)


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    Structured Review

    BPS Bioscience prmt1
    Prmt1, supplied by BPS Bioscience, used in various techniques. Bioz Stars score: 94/100, based on 2 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
    https://www.bioz.com/product/recombinant+prmt1/PRMT1%2C+GST-tag+(E%2E+coli-derived)+Recombinant/10__1158_slash_1535___7163__mct___25___1105-43-5-14
    Average 94 stars, based on 2 article reviews
    prmt1 - by Bioz Stars, 2026-09
    94/100 stars

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    Related Articles

    Modification:

    Article Title: Target identification reveals protein arginine methyltransferase 1 is a potential target of phenyl vinyl sulfone and its derivatives
    Article Snippet: .. High glucose Dulbecco’s Modified Eagle Medium, fetal bovine serum, Medium 199, OPTI-MEM, 0.25% trypsin-EDTA 1X (Gibco, Grand Island, NY); Immobilon Western chemiluminescent HRP substrate, C 18 Zip-tip (Millipore, Billerica, MA); phenyl vinyl sulfone, phenyl vinyl sulfonate, ethyl vinyl sulfone, BVT 948, NSC 95397, Bay 11-7082, Bay 11-9085, AMI-1 (Santa Cruz Biotechnology, Santa Cruz, CA); trypsin (Promega, Madison, WI); recombinant PRMT1, PRMT1 assay kit (BPS Bioscience, San Diego, CA); histone H4 (New England BioLabs, Ipswich, MA); recombinant glutathione reductase, glutathione reductase activity colorimetric assay Kit (BioVision, Milpitas, CA); antibodies: IMPDH1 (PA5-27792, Thermo Fisher Scientific Inc,Waltham, MA); Anti-dimethyl-Arginine Antibody, asymmetric(ASYM24) (07-414), Anti-dimethyl-Histone H4 (Arg3) Asymmetric Antibody(07-213-I), Anti-phosphotyrosine Antibody, 4G10® Platinum (05-1050) (Millipore, Billerica, MA); (Cell Signaling Technology, Danvers, MA); PRMT1 (B-2, sc-166963), PTP1B (D-4, sc-133259), glutathione reductase (C-10, sc-133245), vimentin (H-84, sc-5565) (Santa Cruz Biotechnology, Santa Cruz, CA); peroxidase-conjugated secondary antibodies, DylightTM 488, fluorescein (FITC)-conjugated secondary antibodies (Jackson ImmunoResearch Laboratories, West Grove, PA) were purchased from manufacturers indicated in parentheses. .. HeLa cells were obtained originally from American Type Culture Collection.

    Article Title: Target identification reveals protein arginine methyltransferase 1 is a potential target of phenyl vinyl sulfone and its derivatives
    Article Snippet: .. High glucose Dulbecco’s Modified Eagle Medium, fetal bovine serum, Medium 199, OPTI-MEM, 0.25% trypsin-EDTA 1X (Gibco, Grand Island, NY); Immobilon Western chemiluminescent HRP substrate, C18 Zip-tip (Millipore, Billerica, MA); phenyl vinyl sulfone, phenyl vinyl sulfonate, ethyl vinyl sulfone, BVT 948, NSC 95397, Bay 11-7082, Bay 11-9085, AMI-1 (Santa Cruz Biotechnology, Santa Cruz, CA); trypsin (Promega, Madison, WI); recombinant PRMT1, PRMT1 assay kit (BPS Bioscience, San Diego, CA); histone H4 (New England BioLabs, Ipswich, MA); recombinant glutathione reductase, glutathione reductase activity colorimetric assay Kit (BioVision, Milpitas, CA); antibodies: IMPDH1 (PA5-27792, Thermo Fisher Scientific Inc,Waltham, MA);Anti-dimethyl-Arginine Antibody,asymmetric(ASYM24) (07-414), Anti-dimethyl-Histone H4 (Arg3)Asymmetric Antibody(07-213-I), Anti-phosphotyrosine Antibody, 4G10® Platinum (05-1050) (Millipore, Billerica, MA); (Cell Signaling Technology, Danvers, MA); PRMT1 (B-2, sc-166963), PTP1B (D-4, sc-133259), glutathione reductase (C-10, sc-133245), vimentin (H-84, sc-5565) (Santa Cruz Biotechnology, Santa Cruz, CA); peroxidase-conjugated secondary antibodies, DylightTM 488, fluorescein (FITC)-conjugated secondary antibodies (Jackson ImmunoResearch Laboratories, West Grove, PA) were purchased from manufacturers indicated in parentheses. .. HeLa cells were obtained originally from American Type Culture Collection.

    Western Blot:

    Article Title: Target identification reveals protein arginine methyltransferase 1 is a potential target of phenyl vinyl sulfone and its derivatives
    Article Snippet: .. High glucose Dulbecco’s Modified Eagle Medium, fetal bovine serum, Medium 199, OPTI-MEM, 0.25% trypsin-EDTA 1X (Gibco, Grand Island, NY); Immobilon Western chemiluminescent HRP substrate, C 18 Zip-tip (Millipore, Billerica, MA); phenyl vinyl sulfone, phenyl vinyl sulfonate, ethyl vinyl sulfone, BVT 948, NSC 95397, Bay 11-7082, Bay 11-9085, AMI-1 (Santa Cruz Biotechnology, Santa Cruz, CA); trypsin (Promega, Madison, WI); recombinant PRMT1, PRMT1 assay kit (BPS Bioscience, San Diego, CA); histone H4 (New England BioLabs, Ipswich, MA); recombinant glutathione reductase, glutathione reductase activity colorimetric assay Kit (BioVision, Milpitas, CA); antibodies: IMPDH1 (PA5-27792, Thermo Fisher Scientific Inc,Waltham, MA); Anti-dimethyl-Arginine Antibody, asymmetric(ASYM24) (07-414), Anti-dimethyl-Histone H4 (Arg3) Asymmetric Antibody(07-213-I), Anti-phosphotyrosine Antibody, 4G10® Platinum (05-1050) (Millipore, Billerica, MA); (Cell Signaling Technology, Danvers, MA); PRMT1 (B-2, sc-166963), PTP1B (D-4, sc-133259), glutathione reductase (C-10, sc-133245), vimentin (H-84, sc-5565) (Santa Cruz Biotechnology, Santa Cruz, CA); peroxidase-conjugated secondary antibodies, DylightTM 488, fluorescein (FITC)-conjugated secondary antibodies (Jackson ImmunoResearch Laboratories, West Grove, PA) were purchased from manufacturers indicated in parentheses. .. HeLa cells were obtained originally from American Type Culture Collection.

    Article Title: Target identification reveals protein arginine methyltransferase 1 is a potential target of phenyl vinyl sulfone and its derivatives
    Article Snippet: .. High glucose Dulbecco’s Modified Eagle Medium, fetal bovine serum, Medium 199, OPTI-MEM, 0.25% trypsin-EDTA 1X (Gibco, Grand Island, NY); Immobilon Western chemiluminescent HRP substrate, C18 Zip-tip (Millipore, Billerica, MA); phenyl vinyl sulfone, phenyl vinyl sulfonate, ethyl vinyl sulfone, BVT 948, NSC 95397, Bay 11-7082, Bay 11-9085, AMI-1 (Santa Cruz Biotechnology, Santa Cruz, CA); trypsin (Promega, Madison, WI); recombinant PRMT1, PRMT1 assay kit (BPS Bioscience, San Diego, CA); histone H4 (New England BioLabs, Ipswich, MA); recombinant glutathione reductase, glutathione reductase activity colorimetric assay Kit (BioVision, Milpitas, CA); antibodies: IMPDH1 (PA5-27792, Thermo Fisher Scientific Inc,Waltham, MA);Anti-dimethyl-Arginine Antibody,asymmetric(ASYM24) (07-414), Anti-dimethyl-Histone H4 (Arg3)Asymmetric Antibody(07-213-I), Anti-phosphotyrosine Antibody, 4G10® Platinum (05-1050) (Millipore, Billerica, MA); (Cell Signaling Technology, Danvers, MA); PRMT1 (B-2, sc-166963), PTP1B (D-4, sc-133259), glutathione reductase (C-10, sc-133245), vimentin (H-84, sc-5565) (Santa Cruz Biotechnology, Santa Cruz, CA); peroxidase-conjugated secondary antibodies, DylightTM 488, fluorescein (FITC)-conjugated secondary antibodies (Jackson ImmunoResearch Laboratories, West Grove, PA) were purchased from manufacturers indicated in parentheses. .. HeLa cells were obtained originally from American Type Culture Collection.

    Recombinant:

    Article Title: Target identification reveals protein arginine methyltransferase 1 is a potential target of phenyl vinyl sulfone and its derivatives
    Article Snippet: .. High glucose Dulbecco’s Modified Eagle Medium, fetal bovine serum, Medium 199, OPTI-MEM, 0.25% trypsin-EDTA 1X (Gibco, Grand Island, NY); Immobilon Western chemiluminescent HRP substrate, C 18 Zip-tip (Millipore, Billerica, MA); phenyl vinyl sulfone, phenyl vinyl sulfonate, ethyl vinyl sulfone, BVT 948, NSC 95397, Bay 11-7082, Bay 11-9085, AMI-1 (Santa Cruz Biotechnology, Santa Cruz, CA); trypsin (Promega, Madison, WI); recombinant PRMT1, PRMT1 assay kit (BPS Bioscience, San Diego, CA); histone H4 (New England BioLabs, Ipswich, MA); recombinant glutathione reductase, glutathione reductase activity colorimetric assay Kit (BioVision, Milpitas, CA); antibodies: IMPDH1 (PA5-27792, Thermo Fisher Scientific Inc,Waltham, MA); Anti-dimethyl-Arginine Antibody, asymmetric(ASYM24) (07-414), Anti-dimethyl-Histone H4 (Arg3) Asymmetric Antibody(07-213-I), Anti-phosphotyrosine Antibody, 4G10® Platinum (05-1050) (Millipore, Billerica, MA); (Cell Signaling Technology, Danvers, MA); PRMT1 (B-2, sc-166963), PTP1B (D-4, sc-133259), glutathione reductase (C-10, sc-133245), vimentin (H-84, sc-5565) (Santa Cruz Biotechnology, Santa Cruz, CA); peroxidase-conjugated secondary antibodies, DylightTM 488, fluorescein (FITC)-conjugated secondary antibodies (Jackson ImmunoResearch Laboratories, West Grove, PA) were purchased from manufacturers indicated in parentheses. .. HeLa cells were obtained originally from American Type Culture Collection.

    Article Title: Discovery of a Novel Chemotype of Histone Lysine Methyltransferase EHMT1/2 (GLP/G9a) Inhibitors: Rational Design, Synthesis, Biological Evaluation, and Co-crystal Structure
    Article Snippet: .. Briefly, 3 L of human recombinant PRMT1 (BPS BioScience, # 51041) (final concentration 0.9 nM) were first incubated with 2.5 L of each compound for 30 min, then 4.5 L of a mixture of Histone H4 (1– Page 67 of 115 ACS Paragon Plus Environment Journal of Medicinal Chemistry 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 68 21) peptide biotinylated (AnaSpec, # 62555) (final concentration 100 nM) and of SAM (Sigma, # A7007) (final concentration 2 M) was added. .. The reaction was incubated for 60 min then it was stopped by the addition in subdued light of 5 L of anti-methyl- histone H4 arginine 3 (H4R3me) AlphaLISA acceptor beads (PerkinElmer, # AL150) (final concentration 20 g/mL) diluted in Epigenetic Buffer (PerkinElmer, # AL008).

    Article Title: Discovery of a Novel Chemotype of Histone Lysine Methyltransferase EHMT1/2 (GLP/G9a) Inhibitors: Rational Design, Synthesis, Biological Evaluation, and Co-crystal Structure
    Article Snippet: .. Briefly, 3 μ L of human recombinant PRMT1 (BPS BioScience, # 51041) (final concentration, 0.9 nM) was first incubated with 2.5 μ L of each compound for 30 min; then, 4.5 μ L of a mixture of histone H4 (1–21) peptide biotinylated (AnaSpec, # 62555) (final concentration, 100 nM) and SAM (Sigma, # A7007) (final concentration, 2 μ M) was added. .. The reaction was incubated for 60 min, and then it was stopped by the addition in subdued light of 5 μ L of anti-methyl-histone H4 arginine 3 (H4R3me) AlphaLISA acceptor beads (PerkinElmer, # AL150) (final concentration, 20 μ g/mL) diluted in epigenetic buffer (PerkinElmer, # AL008).

    Article Title: Target identification reveals protein arginine methyltransferase 1 is a potential target of phenyl vinyl sulfone and its derivatives
    Article Snippet: .. High glucose Dulbecco’s Modified Eagle Medium, fetal bovine serum, Medium 199, OPTI-MEM, 0.25% trypsin-EDTA 1X (Gibco, Grand Island, NY); Immobilon Western chemiluminescent HRP substrate, C18 Zip-tip (Millipore, Billerica, MA); phenyl vinyl sulfone, phenyl vinyl sulfonate, ethyl vinyl sulfone, BVT 948, NSC 95397, Bay 11-7082, Bay 11-9085, AMI-1 (Santa Cruz Biotechnology, Santa Cruz, CA); trypsin (Promega, Madison, WI); recombinant PRMT1, PRMT1 assay kit (BPS Bioscience, San Diego, CA); histone H4 (New England BioLabs, Ipswich, MA); recombinant glutathione reductase, glutathione reductase activity colorimetric assay Kit (BioVision, Milpitas, CA); antibodies: IMPDH1 (PA5-27792, Thermo Fisher Scientific Inc,Waltham, MA);Anti-dimethyl-Arginine Antibody,asymmetric(ASYM24) (07-414), Anti-dimethyl-Histone H4 (Arg3)Asymmetric Antibody(07-213-I), Anti-phosphotyrosine Antibody, 4G10® Platinum (05-1050) (Millipore, Billerica, MA); (Cell Signaling Technology, Danvers, MA); PRMT1 (B-2, sc-166963), PTP1B (D-4, sc-133259), glutathione reductase (C-10, sc-133245), vimentin (H-84, sc-5565) (Santa Cruz Biotechnology, Santa Cruz, CA); peroxidase-conjugated secondary antibodies, DylightTM 488, fluorescein (FITC)-conjugated secondary antibodies (Jackson ImmunoResearch Laboratories, West Grove, PA) were purchased from manufacturers indicated in parentheses. .. HeLa cells were obtained originally from American Type Culture Collection.

    Article Title: Turning Nonselective Inhibitors of Type I Protein Arginine Methyltransferases into Potent and Selective Inhibitors of Protein Arginine Methyltransferase 4 through a Deconstruction–Reconstruction and Fragment-Growing Approach
    Article Snippet: The assays were performed in white opaque OptiPlate-384 (PerkinElmer, #6007299) at 22 °C in a final volume of 25 μL, using the following assay buffer: 30 mM Tris–HCl pH 8.0, 1 mM DTT, 0.01% BSA, 0.01% Tween-20. .. In each well, 3 μL of human recombinant PRMT1 (BPS BioScience, #51041) (final concentration, 0.9 nM) was first incubated for 30 min with 2.5 μL of each compound (dissolved in DMSO and diluted in assay buffer to obtain 1% DMSO); then, 4.5 μL of a mixture of histone H4 (1–21) peptide biotinylated (AnaSpec, # 62555) (final concentration, 100 nM) and SAM (Sigma, #A7007) (final concentration, 2 μM) was added. .. The reaction was incubated for 60 min, and then it was stopped by the addition of 5 μL of antimethyl-histone H4 arginine 3 (H4R3me) AlphaLISA acceptor beads (PerkinElmer, #AL150) (final concentration, 20 μg/mL) diluted in Epigenetic Buffer 1X (PerkinElmer, #AL008).

    Article Title: Turning Nonselective Inhibitors of Type I Protein Arginine Methyltransferases into Potent and Selective Inhibitors of Protein Arginine Methyltransferase 4 through a Deconstruction-Reconstruction and Fragment-Growing Approach.
    Article Snippet: The assays were performed in white opaque OptiPlate-384 (PerkinElmer, #6007299) at 22 °C in a final volume of 25 μL, using the following assay buffer: 30 mM Tris−HCl pH 8.0, 1 mM DTT, 0.01% BSA, 0.01% Tween-20. .. In each well, 3 μL of human recombinant PRMT1 (BPS BioScience, #51041) (final concentration, 0.9 nM) was first incubated for 30 min with 2.5 μL of each compound (dissolved inDMSO and diluted in assay buffer to obtain 1% DMSO); then, 4.5 μL of a mixture of histone H4 (1−21) peptide biotinylated (AnaSpec, # 62555) (final concentration, 100 nM) and SAM (Sigma, #A7007) (final concentration, 2 μM) was added. .. The reaction was incubated for 60 min, and then it was stopped by the addition of 5 μL of antimethyl-histone H4 arginine 3 (H4R3me) AlphaLISA acceptor beads (PerkinElmer, #AL150) (final concentration, 20 μg/mL) diluted in Epigenetic Buffer 1X (PerkinElmer, #AL008).

    Activity Assay:

    Article Title: Target identification reveals protein arginine methyltransferase 1 is a potential target of phenyl vinyl sulfone and its derivatives
    Article Snippet: .. High glucose Dulbecco’s Modified Eagle Medium, fetal bovine serum, Medium 199, OPTI-MEM, 0.25% trypsin-EDTA 1X (Gibco, Grand Island, NY); Immobilon Western chemiluminescent HRP substrate, C 18 Zip-tip (Millipore, Billerica, MA); phenyl vinyl sulfone, phenyl vinyl sulfonate, ethyl vinyl sulfone, BVT 948, NSC 95397, Bay 11-7082, Bay 11-9085, AMI-1 (Santa Cruz Biotechnology, Santa Cruz, CA); trypsin (Promega, Madison, WI); recombinant PRMT1, PRMT1 assay kit (BPS Bioscience, San Diego, CA); histone H4 (New England BioLabs, Ipswich, MA); recombinant glutathione reductase, glutathione reductase activity colorimetric assay Kit (BioVision, Milpitas, CA); antibodies: IMPDH1 (PA5-27792, Thermo Fisher Scientific Inc,Waltham, MA); Anti-dimethyl-Arginine Antibody, asymmetric(ASYM24) (07-414), Anti-dimethyl-Histone H4 (Arg3) Asymmetric Antibody(07-213-I), Anti-phosphotyrosine Antibody, 4G10® Platinum (05-1050) (Millipore, Billerica, MA); (Cell Signaling Technology, Danvers, MA); PRMT1 (B-2, sc-166963), PTP1B (D-4, sc-133259), glutathione reductase (C-10, sc-133245), vimentin (H-84, sc-5565) (Santa Cruz Biotechnology, Santa Cruz, CA); peroxidase-conjugated secondary antibodies, DylightTM 488, fluorescein (FITC)-conjugated secondary antibodies (Jackson ImmunoResearch Laboratories, West Grove, PA) were purchased from manufacturers indicated in parentheses. .. HeLa cells were obtained originally from American Type Culture Collection.

    Article Title: Target identification reveals protein arginine methyltransferase 1 is a potential target of phenyl vinyl sulfone and its derivatives
    Article Snippet: .. High glucose Dulbecco’s Modified Eagle Medium, fetal bovine serum, Medium 199, OPTI-MEM, 0.25% trypsin-EDTA 1X (Gibco, Grand Island, NY); Immobilon Western chemiluminescent HRP substrate, C18 Zip-tip (Millipore, Billerica, MA); phenyl vinyl sulfone, phenyl vinyl sulfonate, ethyl vinyl sulfone, BVT 948, NSC 95397, Bay 11-7082, Bay 11-9085, AMI-1 (Santa Cruz Biotechnology, Santa Cruz, CA); trypsin (Promega, Madison, WI); recombinant PRMT1, PRMT1 assay kit (BPS Bioscience, San Diego, CA); histone H4 (New England BioLabs, Ipswich, MA); recombinant glutathione reductase, glutathione reductase activity colorimetric assay Kit (BioVision, Milpitas, CA); antibodies: IMPDH1 (PA5-27792, Thermo Fisher Scientific Inc,Waltham, MA);Anti-dimethyl-Arginine Antibody,asymmetric(ASYM24) (07-414), Anti-dimethyl-Histone H4 (Arg3)Asymmetric Antibody(07-213-I), Anti-phosphotyrosine Antibody, 4G10® Platinum (05-1050) (Millipore, Billerica, MA); (Cell Signaling Technology, Danvers, MA); PRMT1 (B-2, sc-166963), PTP1B (D-4, sc-133259), glutathione reductase (C-10, sc-133245), vimentin (H-84, sc-5565) (Santa Cruz Biotechnology, Santa Cruz, CA); peroxidase-conjugated secondary antibodies, DylightTM 488, fluorescein (FITC)-conjugated secondary antibodies (Jackson ImmunoResearch Laboratories, West Grove, PA) were purchased from manufacturers indicated in parentheses. .. HeLa cells were obtained originally from American Type Culture Collection.

    Colorimetric Assay:

    Article Title: Target identification reveals protein arginine methyltransferase 1 is a potential target of phenyl vinyl sulfone and its derivatives
    Article Snippet: .. High glucose Dulbecco’s Modified Eagle Medium, fetal bovine serum, Medium 199, OPTI-MEM, 0.25% trypsin-EDTA 1X (Gibco, Grand Island, NY); Immobilon Western chemiluminescent HRP substrate, C 18 Zip-tip (Millipore, Billerica, MA); phenyl vinyl sulfone, phenyl vinyl sulfonate, ethyl vinyl sulfone, BVT 948, NSC 95397, Bay 11-7082, Bay 11-9085, AMI-1 (Santa Cruz Biotechnology, Santa Cruz, CA); trypsin (Promega, Madison, WI); recombinant PRMT1, PRMT1 assay kit (BPS Bioscience, San Diego, CA); histone H4 (New England BioLabs, Ipswich, MA); recombinant glutathione reductase, glutathione reductase activity colorimetric assay Kit (BioVision, Milpitas, CA); antibodies: IMPDH1 (PA5-27792, Thermo Fisher Scientific Inc,Waltham, MA); Anti-dimethyl-Arginine Antibody, asymmetric(ASYM24) (07-414), Anti-dimethyl-Histone H4 (Arg3) Asymmetric Antibody(07-213-I), Anti-phosphotyrosine Antibody, 4G10® Platinum (05-1050) (Millipore, Billerica, MA); (Cell Signaling Technology, Danvers, MA); PRMT1 (B-2, sc-166963), PTP1B (D-4, sc-133259), glutathione reductase (C-10, sc-133245), vimentin (H-84, sc-5565) (Santa Cruz Biotechnology, Santa Cruz, CA); peroxidase-conjugated secondary antibodies, DylightTM 488, fluorescein (FITC)-conjugated secondary antibodies (Jackson ImmunoResearch Laboratories, West Grove, PA) were purchased from manufacturers indicated in parentheses. .. HeLa cells were obtained originally from American Type Culture Collection.

    Article Title: Target identification reveals protein arginine methyltransferase 1 is a potential target of phenyl vinyl sulfone and its derivatives
    Article Snippet: .. High glucose Dulbecco’s Modified Eagle Medium, fetal bovine serum, Medium 199, OPTI-MEM, 0.25% trypsin-EDTA 1X (Gibco, Grand Island, NY); Immobilon Western chemiluminescent HRP substrate, C18 Zip-tip (Millipore, Billerica, MA); phenyl vinyl sulfone, phenyl vinyl sulfonate, ethyl vinyl sulfone, BVT 948, NSC 95397, Bay 11-7082, Bay 11-9085, AMI-1 (Santa Cruz Biotechnology, Santa Cruz, CA); trypsin (Promega, Madison, WI); recombinant PRMT1, PRMT1 assay kit (BPS Bioscience, San Diego, CA); histone H4 (New England BioLabs, Ipswich, MA); recombinant glutathione reductase, glutathione reductase activity colorimetric assay Kit (BioVision, Milpitas, CA); antibodies: IMPDH1 (PA5-27792, Thermo Fisher Scientific Inc,Waltham, MA);Anti-dimethyl-Arginine Antibody,asymmetric(ASYM24) (07-414), Anti-dimethyl-Histone H4 (Arg3)Asymmetric Antibody(07-213-I), Anti-phosphotyrosine Antibody, 4G10® Platinum (05-1050) (Millipore, Billerica, MA); (Cell Signaling Technology, Danvers, MA); PRMT1 (B-2, sc-166963), PTP1B (D-4, sc-133259), glutathione reductase (C-10, sc-133245), vimentin (H-84, sc-5565) (Santa Cruz Biotechnology, Santa Cruz, CA); peroxidase-conjugated secondary antibodies, DylightTM 488, fluorescein (FITC)-conjugated secondary antibodies (Jackson ImmunoResearch Laboratories, West Grove, PA) were purchased from manufacturers indicated in parentheses. .. HeLa cells were obtained originally from American Type Culture Collection.

    Concentration Assay:

    Article Title: Discovery of a Novel Chemotype of Histone Lysine Methyltransferase EHMT1/2 (GLP/G9a) Inhibitors: Rational Design, Synthesis, Biological Evaluation, and Co-crystal Structure
    Article Snippet: .. Briefly, 3 L of human recombinant PRMT1 (BPS BioScience, # 51041) (final concentration 0.9 nM) were first incubated with 2.5 L of each compound for 30 min, then 4.5 L of a mixture of Histone H4 (1– Page 67 of 115 ACS Paragon Plus Environment Journal of Medicinal Chemistry 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 68 21) peptide biotinylated (AnaSpec, # 62555) (final concentration 100 nM) and of SAM (Sigma, # A7007) (final concentration 2 M) was added. .. The reaction was incubated for 60 min then it was stopped by the addition in subdued light of 5 L of anti-methyl- histone H4 arginine 3 (H4R3me) AlphaLISA acceptor beads (PerkinElmer, # AL150) (final concentration 20 g/mL) diluted in Epigenetic Buffer (PerkinElmer, # AL008).

    Article Title: Discovery of a Novel Chemotype of Histone Lysine Methyltransferase EHMT1/2 (GLP/G9a) Inhibitors: Rational Design, Synthesis, Biological Evaluation, and Co-crystal Structure
    Article Snippet: .. Briefly, 3 μ L of human recombinant PRMT1 (BPS BioScience, # 51041) (final concentration, 0.9 nM) was first incubated with 2.5 μ L of each compound for 30 min; then, 4.5 μ L of a mixture of histone H4 (1–21) peptide biotinylated (AnaSpec, # 62555) (final concentration, 100 nM) and SAM (Sigma, # A7007) (final concentration, 2 μ M) was added. .. The reaction was incubated for 60 min, and then it was stopped by the addition in subdued light of 5 μ L of anti-methyl-histone H4 arginine 3 (H4R3me) AlphaLISA acceptor beads (PerkinElmer, # AL150) (final concentration, 20 μ g/mL) diluted in epigenetic buffer (PerkinElmer, # AL008).

    Article Title: Turning Nonselective Inhibitors of Type I Protein Arginine Methyltransferases into Potent and Selective Inhibitors of Protein Arginine Methyltransferase 4 through a Deconstruction–Reconstruction and Fragment-Growing Approach
    Article Snippet: The assays were performed in white opaque OptiPlate-384 (PerkinElmer, #6007299) at 22 °C in a final volume of 25 μL, using the following assay buffer: 30 mM Tris–HCl pH 8.0, 1 mM DTT, 0.01% BSA, 0.01% Tween-20. .. In each well, 3 μL of human recombinant PRMT1 (BPS BioScience, #51041) (final concentration, 0.9 nM) was first incubated for 30 min with 2.5 μL of each compound (dissolved in DMSO and diluted in assay buffer to obtain 1% DMSO); then, 4.5 μL of a mixture of histone H4 (1–21) peptide biotinylated (AnaSpec, # 62555) (final concentration, 100 nM) and SAM (Sigma, #A7007) (final concentration, 2 μM) was added. .. The reaction was incubated for 60 min, and then it was stopped by the addition of 5 μL of antimethyl-histone H4 arginine 3 (H4R3me) AlphaLISA acceptor beads (PerkinElmer, #AL150) (final concentration, 20 μg/mL) diluted in Epigenetic Buffer 1X (PerkinElmer, #AL008).

    Article Title: Turning Nonselective Inhibitors of Type I Protein Arginine Methyltransferases into Potent and Selective Inhibitors of Protein Arginine Methyltransferase 4 through a Deconstruction-Reconstruction and Fragment-Growing Approach.
    Article Snippet: The assays were performed in white opaque OptiPlate-384 (PerkinElmer, #6007299) at 22 °C in a final volume of 25 μL, using the following assay buffer: 30 mM Tris−HCl pH 8.0, 1 mM DTT, 0.01% BSA, 0.01% Tween-20. .. In each well, 3 μL of human recombinant PRMT1 (BPS BioScience, #51041) (final concentration, 0.9 nM) was first incubated for 30 min with 2.5 μL of each compound (dissolved inDMSO and diluted in assay buffer to obtain 1% DMSO); then, 4.5 μL of a mixture of histone H4 (1−21) peptide biotinylated (AnaSpec, # 62555) (final concentration, 100 nM) and SAM (Sigma, #A7007) (final concentration, 2 μM) was added. .. The reaction was incubated for 60 min, and then it was stopped by the addition of 5 μL of antimethyl-histone H4 arginine 3 (H4R3me) AlphaLISA acceptor beads (PerkinElmer, #AL150) (final concentration, 20 μg/mL) diluted in Epigenetic Buffer 1X (PerkinElmer, #AL008).

    Incubation:

    Article Title: Discovery of a Novel Chemotype of Histone Lysine Methyltransferase EHMT1/2 (GLP/G9a) Inhibitors: Rational Design, Synthesis, Biological Evaluation, and Co-crystal Structure
    Article Snippet: .. Briefly, 3 L of human recombinant PRMT1 (BPS BioScience, # 51041) (final concentration 0.9 nM) were first incubated with 2.5 L of each compound for 30 min, then 4.5 L of a mixture of Histone H4 (1– Page 67 of 115 ACS Paragon Plus Environment Journal of Medicinal Chemistry 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 68 21) peptide biotinylated (AnaSpec, # 62555) (final concentration 100 nM) and of SAM (Sigma, # A7007) (final concentration 2 M) was added. .. The reaction was incubated for 60 min then it was stopped by the addition in subdued light of 5 L of anti-methyl- histone H4 arginine 3 (H4R3me) AlphaLISA acceptor beads (PerkinElmer, # AL150) (final concentration 20 g/mL) diluted in Epigenetic Buffer (PerkinElmer, # AL008).

    Article Title: Discovery of a Novel Chemotype of Histone Lysine Methyltransferase EHMT1/2 (GLP/G9a) Inhibitors: Rational Design, Synthesis, Biological Evaluation, and Co-crystal Structure
    Article Snippet: .. Briefly, 3 μ L of human recombinant PRMT1 (BPS BioScience, # 51041) (final concentration, 0.9 nM) was first incubated with 2.5 μ L of each compound for 30 min; then, 4.5 μ L of a mixture of histone H4 (1–21) peptide biotinylated (AnaSpec, # 62555) (final concentration, 100 nM) and SAM (Sigma, # A7007) (final concentration, 2 μ M) was added. .. The reaction was incubated for 60 min, and then it was stopped by the addition in subdued light of 5 μ L of anti-methyl-histone H4 arginine 3 (H4R3me) AlphaLISA acceptor beads (PerkinElmer, # AL150) (final concentration, 20 μ g/mL) diluted in epigenetic buffer (PerkinElmer, # AL008).

    Article Title: Turning Nonselective Inhibitors of Type I Protein Arginine Methyltransferases into Potent and Selective Inhibitors of Protein Arginine Methyltransferase 4 through a Deconstruction–Reconstruction and Fragment-Growing Approach
    Article Snippet: The assays were performed in white opaque OptiPlate-384 (PerkinElmer, #6007299) at 22 °C in a final volume of 25 μL, using the following assay buffer: 30 mM Tris–HCl pH 8.0, 1 mM DTT, 0.01% BSA, 0.01% Tween-20. .. In each well, 3 μL of human recombinant PRMT1 (BPS BioScience, #51041) (final concentration, 0.9 nM) was first incubated for 30 min with 2.5 μL of each compound (dissolved in DMSO and diluted in assay buffer to obtain 1% DMSO); then, 4.5 μL of a mixture of histone H4 (1–21) peptide biotinylated (AnaSpec, # 62555) (final concentration, 100 nM) and SAM (Sigma, #A7007) (final concentration, 2 μM) was added. .. The reaction was incubated for 60 min, and then it was stopped by the addition of 5 μL of antimethyl-histone H4 arginine 3 (H4R3me) AlphaLISA acceptor beads (PerkinElmer, #AL150) (final concentration, 20 μg/mL) diluted in Epigenetic Buffer 1X (PerkinElmer, #AL008).

    Article Title: Turning Nonselective Inhibitors of Type I Protein Arginine Methyltransferases into Potent and Selective Inhibitors of Protein Arginine Methyltransferase 4 through a Deconstruction-Reconstruction and Fragment-Growing Approach.
    Article Snippet: The assays were performed in white opaque OptiPlate-384 (PerkinElmer, #6007299) at 22 °C in a final volume of 25 μL, using the following assay buffer: 30 mM Tris−HCl pH 8.0, 1 mM DTT, 0.01% BSA, 0.01% Tween-20. .. In each well, 3 μL of human recombinant PRMT1 (BPS BioScience, #51041) (final concentration, 0.9 nM) was first incubated for 30 min with 2.5 μL of each compound (dissolved inDMSO and diluted in assay buffer to obtain 1% DMSO); then, 4.5 μL of a mixture of histone H4 (1−21) peptide biotinylated (AnaSpec, # 62555) (final concentration, 100 nM) and SAM (Sigma, #A7007) (final concentration, 2 μM) was added. .. The reaction was incubated for 60 min, and then it was stopped by the addition of 5 μL of antimethyl-histone H4 arginine 3 (H4R3me) AlphaLISA acceptor beads (PerkinElmer, #AL150) (final concentration, 20 μg/mL) diluted in Epigenetic Buffer 1X (PerkinElmer, #AL008).



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    Image Search Results


    Figure 4. TDP-43 is methylated by PRMT1 at R293 (A) Sequence alignment of amino acids 287–307 of TDP-43 from diverse vertebrates. Conserved 292– 293 sites are bolded. S292 phosphorylation site and R293-G295 RGG-motif are highlighted in yellow and green, respectively. (B) Western blot of immunoprecipitated endoge- nous TDP-43 from SH-SY5Y-cells probed with antibodies against TDP-43, ADMA, MMA, and SDMA. TDP-43 with arginine methylation is marked by arrowheads. (C) Western blot of immunoprecipitated endoge- nous TDP-43 from SH-SY5Y-cells with siRNA- induced PRMT1 knockdown probed with anti- bodies against TDP-43 or MMA. A PRMT1 blot was run separately to confirm siRNA-mediated knockdown of PRMT1. (D) Western blot of expressed and immunopre- cipitated TDP-43WT using anti-FLAG antibody from SH-SY5Y-cells treated with DMSO (D) or with methyltransferase inhibitor AdOx (A) at a final concentration of 20 mM for 24 h. FL, full-length TDP-43; CTF35, C-terminal 35-kDa fragment of TDP-43. (E) Western blot of expressed and immunopre- cipitated TDP-43WT and TDP-43R293K using anti- FLAG antibody from SH-SY5Y cells probed with antibodies against TDP-43 and MMA. See also Figures S6 and S7.

    Journal: Cell reports

    Article Title: Opposing roles of p38α-mediated phosphorylation and PRMT1-mediated arginine methylation in driving TDP-43 proteinopathy.

    doi: 10.1016/j.celrep.2024.115205

    Figure Lengend Snippet: Figure 4. TDP-43 is methylated by PRMT1 at R293 (A) Sequence alignment of amino acids 287–307 of TDP-43 from diverse vertebrates. Conserved 292– 293 sites are bolded. S292 phosphorylation site and R293-G295 RGG-motif are highlighted in yellow and green, respectively. (B) Western blot of immunoprecipitated endoge- nous TDP-43 from SH-SY5Y-cells probed with antibodies against TDP-43, ADMA, MMA, and SDMA. TDP-43 with arginine methylation is marked by arrowheads. (C) Western blot of immunoprecipitated endoge- nous TDP-43 from SH-SY5Y-cells with siRNA- induced PRMT1 knockdown probed with anti- bodies against TDP-43 or MMA. A PRMT1 blot was run separately to confirm siRNA-mediated knockdown of PRMT1. (D) Western blot of expressed and immunopre- cipitated TDP-43WT using anti-FLAG antibody from SH-SY5Y-cells treated with DMSO (D) or with methyltransferase inhibitor AdOx (A) at a final concentration of 20 mM for 24 h. FL, full-length TDP-43; CTF35, C-terminal 35-kDa fragment of TDP-43. (E) Western blot of expressed and immunopre- cipitated TDP-43WT and TDP-43R293K using anti- FLAG antibody from SH-SY5Y cells probed with antibodies against TDP-43 and MMA. See also Figures S6 and S7.

    Article Snippet: REAGENT or RESOURCE SOURCE IDENTIFIER Recombinant human PRMT1 protein Abcam ab89007 S-(50-Adenosyl)-L-methionine chloride dihydrochloride Sigma A7007 mTESR media StemCell Technologies Cat # 05825 ROCK inhibitor Selleck Chemicals Cat #S1049 Growth factor-reduced matrigel Corning Cat # 356231 Versene Gibco Cat # 5040066 DBPS Thermo Fisher Cat # 21-031-CV Accutase Thermo Fisher Cat # NC9839010 Poly-L-ornithine solution Sigma Cat # RNBK5888 Mouse laminin Sigma Cat #L2020 FGF R@D Cat # 233-FB Stem-Cell Banker GMP Grade CedarLane Labs Cat # 11890 Fibronectin Corning Cat # CB40008A Neurobasal media Gibco Cat # 12348017 NEAA Gibco Cat # 11-140-050 Glutamax Gibco Cat # 35050061 N2 Gibco Cat # 17502048 B27 Gibco Cat # 17504044 SB431542 StemCell Technologies Cat # 72234 LDN193189 Sigma-Aldrich Cat # SML0559 Retinoic Acid Sigma-Aldrich Cat #R2625 Smoothened-Agonist (SAG) Cayman Chemical Cat # 11914 DAPT Cayman Chemical Cat # 13197 BDNF PeproTech Cat # 450-02 GDNF PeproTech Cat # 450-10 CNTF PeproTech Cat # 450-13 Ascorbic acid Sigma-Aldrich Cat # A4403 DMSO Sigma-Aldrich Cat #D4540 OptiMEM Gibco Cat # 31985070 PBS Gibco Cat # 10010023 Paraformaldehyde Electron Microscopy Sciences Cat # 15714-S Donkey Serum Jackson ImmunoResearch Cat # 017-000-121 Prolong Glass mounting media Invitrogen Cat #P36981 Trypan Blue Solution, 0.4% Gibco Cat # 15250061 cOmpleteTM, Mini, EDTA-free Protease Inhibitor Cocktail Millipore Sigma Cat # 4693159001 NuPAGE MES SDS Running Buffer (20X) ThermoFisher Scientific Cat # NP0002 NuPAGE Bis-Tris Mini Protein Gels, 4–12%, 1.5 mm ThermoFisher Scientific Cat # NP0335BOX PierceTM Reversible Protein Stain Kit for Nitrocellulose Membranes Thermo Scientific Cat # PI24580 Trans-Blot Turbo Mini 0.2 mm Nitrocellulose Transfer Packs Bio-Rad Cat # 1704158 SuperSignalTM West Pico PLUS Chemiluminescent Substrate Thermo Scientific Cat # PI34577 Critical commercial assays Pierce BCA Protein Assay Kit ThermoFisher Scientific Cat # 23225 Z’-Lyte kinase assay for p38a ThermoFisher Scientific Cat # PV3177 Pierce LDH Cytotoxicity Assay Kit ThermoFisher Scientific Cat # 88953 (Continued on next page) Cell Reports 44, 115205, January 28, 2025 23

    Techniques: Methylation, Sequencing, Phospho-proteomics, Western Blot, Immunoprecipitation, Knockdown, Concentration Assay

    Figure 6. Arginine methylation of TDP-43 regulates its aggregation (A) Western blot of total and pTDP-43 in RIPA and urea fractions of TDP-43WT-transfected SH-SY5Y-cells treated with DMSO (D) or with methyltransferase inhibitor AdOx (A) at a final concentration of 20 mM for 24 h. The positions of FLAG-tagged TDP-43 (exo) and endogenous TDP-43 (endo) are indicated. (B) Quantification of urea/RIPA ratio of total TDP-43 normalized to levels in DMSO-treated cells (mean ± SD, unpaired t test, n = 4). *p < 0.05. (C) Quantification of pTDP-43 in the urea fraction normalized to levels in DMSO-treated cells (mean ± SD, unpaired t test, n = 4). (D) Western blot of total and pTDP-43 in RIPA and urea fractions of TDP-43WT-transfected SH-SY5Y-cells co-transfected with empty control plasmid (Ctrl) or PRMT1. The positions of FLAG-tagged TDP-43 (exo) and endogenous TDP-43 (endo) are indicated. The positions of Myc-tagged PRMT1 (exo) and endogenous PRMT1 (endo) are also indicated. (E) Quantification of urea/RIPA ratio of total TDP-43 normalized to levels in Ctrl-plasmid co-transfected cells (mean ± SD, unpaired t test, n = 5). ***p < 0.001. (F) Quantification of pTDP-43 in the urea fraction normalized to levels in control cells (mean ± SD, unpaired t test, n = 5). ****p < 0.0001. See also Figure S7.

    Journal: Cell reports

    Article Title: Opposing roles of p38α-mediated phosphorylation and PRMT1-mediated arginine methylation in driving TDP-43 proteinopathy.

    doi: 10.1016/j.celrep.2024.115205

    Figure Lengend Snippet: Figure 6. Arginine methylation of TDP-43 regulates its aggregation (A) Western blot of total and pTDP-43 in RIPA and urea fractions of TDP-43WT-transfected SH-SY5Y-cells treated with DMSO (D) or with methyltransferase inhibitor AdOx (A) at a final concentration of 20 mM for 24 h. The positions of FLAG-tagged TDP-43 (exo) and endogenous TDP-43 (endo) are indicated. (B) Quantification of urea/RIPA ratio of total TDP-43 normalized to levels in DMSO-treated cells (mean ± SD, unpaired t test, n = 4). *p < 0.05. (C) Quantification of pTDP-43 in the urea fraction normalized to levels in DMSO-treated cells (mean ± SD, unpaired t test, n = 4). (D) Western blot of total and pTDP-43 in RIPA and urea fractions of TDP-43WT-transfected SH-SY5Y-cells co-transfected with empty control plasmid (Ctrl) or PRMT1. The positions of FLAG-tagged TDP-43 (exo) and endogenous TDP-43 (endo) are indicated. The positions of Myc-tagged PRMT1 (exo) and endogenous PRMT1 (endo) are also indicated. (E) Quantification of urea/RIPA ratio of total TDP-43 normalized to levels in Ctrl-plasmid co-transfected cells (mean ± SD, unpaired t test, n = 5). ***p < 0.001. (F) Quantification of pTDP-43 in the urea fraction normalized to levels in control cells (mean ± SD, unpaired t test, n = 5). ****p < 0.0001. See also Figure S7.

    Article Snippet: REAGENT or RESOURCE SOURCE IDENTIFIER Recombinant human PRMT1 protein Abcam ab89007 S-(50-Adenosyl)-L-methionine chloride dihydrochloride Sigma A7007 mTESR media StemCell Technologies Cat # 05825 ROCK inhibitor Selleck Chemicals Cat #S1049 Growth factor-reduced matrigel Corning Cat # 356231 Versene Gibco Cat # 5040066 DBPS Thermo Fisher Cat # 21-031-CV Accutase Thermo Fisher Cat # NC9839010 Poly-L-ornithine solution Sigma Cat # RNBK5888 Mouse laminin Sigma Cat #L2020 FGF R@D Cat # 233-FB Stem-Cell Banker GMP Grade CedarLane Labs Cat # 11890 Fibronectin Corning Cat # CB40008A Neurobasal media Gibco Cat # 12348017 NEAA Gibco Cat # 11-140-050 Glutamax Gibco Cat # 35050061 N2 Gibco Cat # 17502048 B27 Gibco Cat # 17504044 SB431542 StemCell Technologies Cat # 72234 LDN193189 Sigma-Aldrich Cat # SML0559 Retinoic Acid Sigma-Aldrich Cat #R2625 Smoothened-Agonist (SAG) Cayman Chemical Cat # 11914 DAPT Cayman Chemical Cat # 13197 BDNF PeproTech Cat # 450-02 GDNF PeproTech Cat # 450-10 CNTF PeproTech Cat # 450-13 Ascorbic acid Sigma-Aldrich Cat # A4403 DMSO Sigma-Aldrich Cat #D4540 OptiMEM Gibco Cat # 31985070 PBS Gibco Cat # 10010023 Paraformaldehyde Electron Microscopy Sciences Cat # 15714-S Donkey Serum Jackson ImmunoResearch Cat # 017-000-121 Prolong Glass mounting media Invitrogen Cat #P36981 Trypan Blue Solution, 0.4% Gibco Cat # 15250061 cOmpleteTM, Mini, EDTA-free Protease Inhibitor Cocktail Millipore Sigma Cat # 4693159001 NuPAGE MES SDS Running Buffer (20X) ThermoFisher Scientific Cat # NP0002 NuPAGE Bis-Tris Mini Protein Gels, 4–12%, 1.5 mm ThermoFisher Scientific Cat # NP0335BOX PierceTM Reversible Protein Stain Kit for Nitrocellulose Membranes Thermo Scientific Cat # PI24580 Trans-Blot Turbo Mini 0.2 mm Nitrocellulose Transfer Packs Bio-Rad Cat # 1704158 SuperSignalTM West Pico PLUS Chemiluminescent Substrate Thermo Scientific Cat # PI34577 Critical commercial assays Pierce BCA Protein Assay Kit ThermoFisher Scientific Cat # 23225 Z’-Lyte kinase assay for p38a ThermoFisher Scientific Cat # PV3177 Pierce LDH Cytotoxicity Assay Kit ThermoFisher Scientific Cat # 88953 (Continued on next page) Cell Reports 44, 115205, January 28, 2025 23

    Techniques: Methylation, Western Blot, Transfection, Concentration Assay, Control, Plasmid Preparation

    Figure 7. Crosstalk between PRMT1-catalyzed arginine methylation and p38a-mediated phosphorylation of TDP-43 (A) Western blot of immunoprecipitated FLAG-tagged TDP-43 from SH-SY5Y cells probed with antibodies against TDP-43, pTDP-43, and MMA. GAPDH serves as a loading control. The positions of FLAG-tagged TDP-43 (exo) and endogenous TDP-43 (endo) are indicated. (B) Western blot of immunoprecipitated FLAG-tagged TDP-43WT from SH-SY5Y cells with or without siRNA-induced p38a knockdown probed with antibodies against TDP-43, p38a, pTDP-43, and MMA. GAPDH serves as a loading control. (C) Quantification of TDP-43-CTF/full length-ratio (mean ± SD, unpaired t test, n = 3). **p < 0.01. (D) Quantification of mono-methylated TDP-43-CTF normalized to total TDP-43-CTF (mean ± SD, unpaired t test, n = 3). *p < 0.05. (E) Western blot of immunoprecipitated FLAG-tagged TDP-43WT from SH-SY5Y cells with or without PRMT1 overexpression probed with antibodies against TDP- 43, pTDP-43, and MMA. GAPDH serves as a loading control. The positions of FLAG-tagged TDP-43 (exo) and endogenous TDP-43 (endo) are indicated. The positions of Myc-tagged PRMT1 (exo) and endogenous PRMT1 (endo) are also indicated. See also Figure S7.

    Journal: Cell reports

    Article Title: Opposing roles of p38α-mediated phosphorylation and PRMT1-mediated arginine methylation in driving TDP-43 proteinopathy.

    doi: 10.1016/j.celrep.2024.115205

    Figure Lengend Snippet: Figure 7. Crosstalk between PRMT1-catalyzed arginine methylation and p38a-mediated phosphorylation of TDP-43 (A) Western blot of immunoprecipitated FLAG-tagged TDP-43 from SH-SY5Y cells probed with antibodies against TDP-43, pTDP-43, and MMA. GAPDH serves as a loading control. The positions of FLAG-tagged TDP-43 (exo) and endogenous TDP-43 (endo) are indicated. (B) Western blot of immunoprecipitated FLAG-tagged TDP-43WT from SH-SY5Y cells with or without siRNA-induced p38a knockdown probed with antibodies against TDP-43, p38a, pTDP-43, and MMA. GAPDH serves as a loading control. (C) Quantification of TDP-43-CTF/full length-ratio (mean ± SD, unpaired t test, n = 3). **p < 0.01. (D) Quantification of mono-methylated TDP-43-CTF normalized to total TDP-43-CTF (mean ± SD, unpaired t test, n = 3). *p < 0.05. (E) Western blot of immunoprecipitated FLAG-tagged TDP-43WT from SH-SY5Y cells with or without PRMT1 overexpression probed with antibodies against TDP- 43, pTDP-43, and MMA. GAPDH serves as a loading control. The positions of FLAG-tagged TDP-43 (exo) and endogenous TDP-43 (endo) are indicated. The positions of Myc-tagged PRMT1 (exo) and endogenous PRMT1 (endo) are also indicated. See also Figure S7.

    Article Snippet: REAGENT or RESOURCE SOURCE IDENTIFIER Recombinant human PRMT1 protein Abcam ab89007 S-(50-Adenosyl)-L-methionine chloride dihydrochloride Sigma A7007 mTESR media StemCell Technologies Cat # 05825 ROCK inhibitor Selleck Chemicals Cat #S1049 Growth factor-reduced matrigel Corning Cat # 356231 Versene Gibco Cat # 5040066 DBPS Thermo Fisher Cat # 21-031-CV Accutase Thermo Fisher Cat # NC9839010 Poly-L-ornithine solution Sigma Cat # RNBK5888 Mouse laminin Sigma Cat #L2020 FGF R@D Cat # 233-FB Stem-Cell Banker GMP Grade CedarLane Labs Cat # 11890 Fibronectin Corning Cat # CB40008A Neurobasal media Gibco Cat # 12348017 NEAA Gibco Cat # 11-140-050 Glutamax Gibco Cat # 35050061 N2 Gibco Cat # 17502048 B27 Gibco Cat # 17504044 SB431542 StemCell Technologies Cat # 72234 LDN193189 Sigma-Aldrich Cat # SML0559 Retinoic Acid Sigma-Aldrich Cat #R2625 Smoothened-Agonist (SAG) Cayman Chemical Cat # 11914 DAPT Cayman Chemical Cat # 13197 BDNF PeproTech Cat # 450-02 GDNF PeproTech Cat # 450-10 CNTF PeproTech Cat # 450-13 Ascorbic acid Sigma-Aldrich Cat # A4403 DMSO Sigma-Aldrich Cat #D4540 OptiMEM Gibco Cat # 31985070 PBS Gibco Cat # 10010023 Paraformaldehyde Electron Microscopy Sciences Cat # 15714-S Donkey Serum Jackson ImmunoResearch Cat # 017-000-121 Prolong Glass mounting media Invitrogen Cat #P36981 Trypan Blue Solution, 0.4% Gibco Cat # 15250061 cOmpleteTM, Mini, EDTA-free Protease Inhibitor Cocktail Millipore Sigma Cat # 4693159001 NuPAGE MES SDS Running Buffer (20X) ThermoFisher Scientific Cat # NP0002 NuPAGE Bis-Tris Mini Protein Gels, 4–12%, 1.5 mm ThermoFisher Scientific Cat # NP0335BOX PierceTM Reversible Protein Stain Kit for Nitrocellulose Membranes Thermo Scientific Cat # PI24580 Trans-Blot Turbo Mini 0.2 mm Nitrocellulose Transfer Packs Bio-Rad Cat # 1704158 SuperSignalTM West Pico PLUS Chemiluminescent Substrate Thermo Scientific Cat # PI34577 Critical commercial assays Pierce BCA Protein Assay Kit ThermoFisher Scientific Cat # 23225 Z’-Lyte kinase assay for p38a ThermoFisher Scientific Cat # PV3177 Pierce LDH Cytotoxicity Assay Kit ThermoFisher Scientific Cat # 88953 (Continued on next page) Cell Reports 44, 115205, January 28, 2025 23

    Techniques: Methylation, Phospho-proteomics, Western Blot, Immunoprecipitation, Control, Knockdown, Over Expression