UniProt functional annotation for P19388

UniProt code: P19388.

Organism: Homo sapiens (Human).
Taxonomy: Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo.
 
Function: DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. Common component of RNA polymerases I, II and III which synthesize ribosomal RNA precursors, mRNA precursors and many functional non- coding RNAs, and small RNAs, such as 5S rRNA and tRNAs, respectively. Pol II is the central component of the basal RNA polymerase II transcription machinery. Pols are composed of mobile elements that move relative to each other. In Pol II, POLR2E/RPB5 is part of the lower jaw surrounding the central large cleft and thought to grab the incoming DNA template. Seems to be the major component in this process (By similarity). {ECO:0000250, ECO:0000269|PubMed:9852112}.
 
Subunit: Component of the RNA polymerase I (Pol I), RNA polymerase II (Pol II) and RNA polymerase III (Pol III) complexes consisting of at least 13, 12 and 17 subunits, respectively (By similarity). In RNA Pol II, this subunit is present in 2-fold molar excess over the other subunits. Interacts with URI1. {ECO:0000250, ECO:0000269|PubMed:16809778, ECO:0000269|PubMed:9819440, ECO:0000269|PubMed:9852112}.
Subunit: (Microbial infection) Interacts with HBV protein X. {ECO:0000269|PubMed:7828586}.
Subcellular location: Nucleus {ECO:0000269|PubMed:9852112}.
Similarity: Belongs to the archaeal RpoH/eukaryotic RPB5 RNA polymerase subunit family. {ECO:0000305}.

Annotations taken from UniProtKB at the EBI.