Journal: bioRxiv
Article Title: Supported membrane assay probes PLCγ1 activity in LAT condensates
doi: 10.64898/2026.01.23.701188
Figure Lengend Snippet: (A) Western blot probed for total PLCγ1 content. Cells were transfected with either a Gads expression vector (“PLCγ1-mNG Null”, left lane) or PLCγ1-mNG vector (middle and rightmost lanes). PLCγ1-mNG lysates were loaded after either 0 min (middle) or 60 min (right) at RT to determine the stability of PLCγ1-mNG against degradation. Each lane was loaded with 1 µL of lysate. (B) Relative blot intensities (background corrected) for endogenous PLCγ1 (left, grey) versus transfected PLCγ1-mNG (right, green) normalized to endogenous levels (same lane) (n=2). (C) Western blot probed for pY783 with a series of time points and different kinase conditions. Phosphorylation reactions were conducted in 10 µL volumes containing 1 µL of PLCγ1-mNG lysate each, ATP, phosphatase inhibitor, and kinase in buffer. Reactions were kept at RT for the designated time, then quenched with SDS-PAGE loading buffer. Either no kinase, his6-Hck, or BTK-KD (Kinase Domain) was used. (D) Blot intensities (background corrected) of pPLCγ1-mNG relative to non-specific pY bands.
Article Snippet: 1 μL of lysate per lane was thawed, treated as stated, and run on SurePAGE 4-12% Bis-Tris SDS–PAGE gels (GenScript) in 1X MES SDS-PAGE buffer and transferred to nitrocellulose membranes (Invitrogen) in 1X NuPAGE Transfer Buffer (Invitrogen).
Techniques: Western Blot, Transfection, Expressing, Plasmid Preparation, Phospho-proteomics, SDS Page