Protein Name:
DNA-directed RNA polymerase I subunit RPA1
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UniprotKB/SwissProt ID: P91875 (P91875)
Gene Name:
RpI1
Organism: Drosophila melanogaster (Fruit fly)
Function: DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. Largest and catalytic core component of RNA polymerase I which synthesizes ribosomal RNA precursors. Forms the polymerase active center together with the second largest subunit. A single stranded DNA template strand of the promoter is positioned within the central active site cleft of Pol I. A bridging helix emanates from RPA1 and crosses the cleft near the catalytic site and is thought to promote translocation of Pol I by acting as a ratchet that moves the RNA-DNA hybrid through the active site by switching from straight to bent conformations at each step of nucleotide addition (By similarity)
Other Modifications: View all modification sites in dbPTM
Protein Subcellular Localization: Nucleus, nucleolus
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Graphical Visualization of S-nitrosylation Sites:
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