NCBI Accession #
NP_179142.1
NCBI GenBank Nucleotide #
NM_127100.4
NCBI Official Full Name
DNA-directed RNA polymerase family protein
NCBI Official Symbol
NRPE3B
NCBI Official Synonym Symbols
F26H6.8; F26H6_8; RBP36B
NCBI Protein Information
DNA-directed RNA polymerase family protein
NCBI Summary
Non-catalytic subunit of Nuclear DNA-dependent RNA polymerase V; homologous to budding yeast RPB3 and the E. coli RNA polymerase alpha subunit. A closely related paralog, At2g15430 can substitute for At2g15400 in the context of Pol V and encodes the equivalent subunit of Pol II and Pol IV.
UniProt Synonym Gene Names
NRPE3B; RPB36B; RNA polymerase II subunit 3-B; RNA polymerase II subunit B3-B
UniProt Protein Name
DNA-directed RNA polymerases IV and V subunit 3B
UniProt Synonym Protein Names
DNA-directed RNA polymerase II 36 kDa polypeptide B; DNA-directed RNA polymerase II subunit RPB3-B; RNA polymerase II subunit 3-B; RNA polymerase II subunit B3-B
UniProt Primary Accession #
Q39212
UniProt Secondary Accession #
Q9SJP1
UniProt Related Accession #
Q39212
UniProt Comments
DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. Component of RNA polymerases IV and V which mediate short-interfering RNAs (siRNA) accumulation and subsequent RNA-directed DNA methylation-dependent (RdDM) transcriptional gene silencing (TGS) of endogenous repeated sequences, including transposable elements.