reverse transcription reaction (New England Biolabs)
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Reverse Transcription Reaction, supplied by New England Biolabs, used in various techniques. Bioz Stars score: 96/100, based on 4509 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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Average 96 stars, based on 4509 article reviews
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1) Product Images from "RNA polymerase II-TFIIE-TFIIH interface functions in transcription start site selection in Saccharomyces cerevisiae"
Article Title: RNA polymerase II-TFIIE-TFIIH interface functions in transcription start site selection in Saccharomyces cerevisiae
Journal: bioRxiv
doi: 10.1101/2025.11.05.686797
Figure Legend Snippet: a. Schematic representation of two transcriptional phenotypes used in this study. Mycophenolic acid (MPA) sensitivity: MPA inhibits the yeast inosine monophosphate dehydrogenase (IMPDH) enzymes encoded by IMD3 and IMD4 , leading to GTP depletion. In response, wild-type cells induce IMD2 expression by a TSS shift from an upstream “G” TSSs, which produces nonfunctional cryptic transcripts, to a downstream “A” TSS that yields a functional IMD2 mRNA. Mutants that are unable to shift the usage to the downstream TSS show MPA S (top). Suppression of imd2 Δ ::HIS3 : The IMD2 ORF was replaced with the HIS3 to generate the reporter construct. In the absence of MPA, wild-type cells initiate transcription from upstream TSSs of the IMD2 promoter, producing nonfunctional transcripts and failing to grow on medium lacking histidine (SC-His). Mutants that shift transcription constitutively to the downstream TSS express HIS3 and show a His⁺ phenotype (bottom). b. Schematic of genetic screening by PCR-based random mutagenesis coupled with gap repair/plasmid shuffle to examine tfb3 or tfa1 alleles. c. Initiation phenotypes of select representative novel tfb3 mutants obtained from genetic screening. d. Initiation phenotypes of select representative novel tfa1 mutants obtained from genetic screening. 10-fold serial dilutions of saturated cultures of WT and mutant strains were plated on different phenotyping media. e. Positions of Tfb3 and Tfa1 relative to TFIIH and Pol II in the yeast PIC (PDB 7O4J) ( S chilbach et al . 2021 ). f. Mapping novel tfb3 and tfa1 mutant residues shown as spheres on the cartoon representation of Tfb3 and Tfa1 protein structures from ( e ). Residues are colored according to phenotype: shades of purple indicate increasing MPA S mutant strength; shades of orange indicate increasing His⁺ mutant strength; exhibiting with distinct substitutions conferring MPA S or His⁺ phenotypes are shown in red.
Techniques Used: Expressing, Functional Assay, Construct, Mutagenesis, Plasmid Preparation