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Gene: Polr1b (polymerase (RNA) I polypeptide B) Mus musculus
Symbol: Polr1b
Name: polymerase (RNA) I polypeptide B
Description: Predicted to contribute to RNA polymerase I activity. Involved in embryo implantation; nucleologenesis; and rRNA transcription. Localizes to the RNA polymerase I complex. Is expressed in several structures, including alimentary system; heart; integumental system; nervous system; and respiratory system. Orthologous to human POLR1B (RNA polymerase I subunit B); PARTICIPATES IN RNA polymerase I transcription pathway; purine metabolic pathway; pyrimidine metabolic pathway; INTERACTS WITH 4,4'-diaminodiphenylmethane; benzo[a]pyrene; beta-hexachlorocyclohexane.
Type: protein-coding
RefSeq Status: VALIDATED
Also known as: 128kDa; D630020H17Rik; DNA-directed RNA polymerase I 135 kDa polypeptide; DNA-directed RNA polymerase I 135kDa polypeptide; DNA-directed RNA polymerase I subunit RPA2; RNA polymerase 1-2, 128 kDa subunit; RNA polymerase I subunit 2; RPA116; RPA135; RPA2; Rpo1-2
Homo sapiens (human) : POLR1B (RNA polymerase I subunit B)  HGNC  Alliance
Rattus norvegicus (Norway rat) : Polr1b (RNA polymerase I subunit B)  Alliance
Chinchilla lanigera (long-tailed chinchilla) : Polr1b (RNA polymerase I subunit B)
Pan paniscus (bonobo/pygmy chimpanzee) : POLR1B (RNA polymerase I subunit B)
Canis lupus familiaris (dog) : POLR1B (RNA polymerase I subunit B)
Ictidomys tridecemlineatus (thirteen-lined ground squirrel) : Polr1b (RNA polymerase I subunit B)
Sus scrofa (pig) : POLR1B (RNA polymerase I subunit B)
more info ...
Latest Assembly: GRCm38 - Mouse Genome Assembly GRCm38
Mouse AssemblyChrPosition (strand)SourceGenome Browsers
GRCm382129,100,970 - 129,128,060 (+)NCBIGRCm38GRCm38mm10GRCm38
MGSCv372128,926,732 - 128,952,331 (+)NCBIGRCm37mm9NCBIm37
MGSCv362128,792,479 - 128,818,036 (+)NCBImm8
Celera2130,328,366 - 130,353,838 (+)NCBICelera
Cytogenetic Map2 F1NCBI
JBrowse: View Region in Genome Browser (JBrowse)

Gene-Chemical Interaction Annotations
Gene Ontology Annotations
Molecular Pathway Annotations
Phenotype Annotations
References - curated
References - uncurated


Comparative Map Data
Position Markers
QTLs in Region (GRCm38)
miRNA Target Status



Nucleotide Sequences
Protein Sequences

Additional Information

External Database Links
More on Polr1b
Alliance Gene
Ensembl Gene
JBrowse: mm9 mm10
MGI Report
NCBI Genome Data Viewer

CRRD Object Information
CRRD ID: 731265
Created: 2004-01-12
Species: Mus musculus
Last Modified: 2019-09-12
Status: ACTIVE


RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.