PCBP1

Poly(rC) binding protein 1

PDB rendering based on 1wvn.
Available structures
PDB Ortholog search: PDBe, RCSB
Identifiers
SymbolsPCBP1 ; HEL-S-85; HNRPE1; HNRPX; hnRNP-E1; hnRNP-X
External IDsOMIM: 601209 MGI: 1345635 HomoloGene: 68506 GeneCards: PCBP1 Gene
RNA expression pattern
More reference expression data
Orthologs
SpeciesHumanMouse
Entrez509323983
EnsemblENSG00000169564ENSMUSG00000051695
UniProtQ15365P60335
RefSeq (mRNA)NM_006196NM_011865
RefSeq (protein)NP_006187NP_035995
Location (UCSC)Chr 2:
70.31 – 70.32 Mb
Chr 6:
86.52 – 86.53 Mb
PubMed search

Poly(rC)-binding protein 1 is a protein that in humans is encoded by the PCBP1 gene.[1]

This intronless gene is thought to have been generated by retrotransposition of a fully processed PCBP-2 mRNA. This gene and PCBP-2 have paralogues (PCBP3 and PCBP4) which are thought to have arisen as a result of duplication events of entire genes. The protein encoded by this gene appears to be multifunctional. It along with PCBP-2 and hnRNPK corresponds to the major cellular poly(rC)-binding protein. It contains three K-homologous (KH) domains which may be involved in RNA binding. This encoded protein together with PCBP-2 also functions as translational coactivators of poliovirus RNA via a sequence-specific interaction with stem-loop IV of the IRES and promote poliovirus RNA replication by binding to its 5'-terminal cloverleaf structure. It has also been implicated in translational control of the 15-lipoxygenase mRNA, human Papillomavirus type 16 L2 mRNA, and hepatitis A virus RNA. The encoded protein is also suggested to play a part in formation of a sequence-specific alpha-globin mRNP complex which is associated with alpha-globin mRNA stability.[2]

References

  1. Tommerup N, Leffers H (May 1997). "Assignment of human KH-box-containing genes by in situ hybridization: HNRNPK maps to 9q21.32-q21.33, PCBP1 to 2p12-p13, and PCBP2 to 12q13.12-q13.13, distal to FRA12A". Genomics 32 (2): 297–8. doi:10.1006/geno.1996.0121. PMID 8833161.
  2. "Entrez Gene: PCBP1 poly(rC) binding protein 1".

Further reading