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Protein Name: Polycomb group RING finger protein 1

UniprotKB/SwissProt ID: PCGF1_HUMAN (Q9BSM1)

Gene Name: PCGF1

Synonyms: NSPC1, RNF68

Organism: Homo sapiens (Human).

Function: Component of the Polycomb group (PcG) multiprotein BCOR complex, a complex required to maintain the transcriptionally repressive state of some genes, such as BCL6 and the cyclin- dependent kinase inhibitor, CDKN1A. Transcriptional repressor that may be targeted to the DNA by BCL6; this transcription repressor activity may be related to PKC signaling pathway. Represses CDKN1A expression by binding to its promoter, and this repression is dependent on the retinoic acid response element (RARE element). Promotes cell cycle progression and enhances cell proliferation as well. May have a positive role in tumor cell growth by down- regulating CDKN1A. Component of a Polycomb group (PcG) multiprotein PRC1-like complex, a complex class required to maintain the transcriptionally repressive state of many genes, including Hox genes, throughout development. PcG PRC1 complex acts via chromatin remodeling and modification of histones; it mediates monoubiquitination of histone H2A 'Lys-119', rendering chromatin heritably changed in its expressibility.

Other Modifications: View all modification sites in dbPTM

Protein Subcellular Localization: Nucleus.

Graphical Visualization of Ubiquitination Sites:
Overview of Protein Ubiquitination Sites with Functional and Structural Information
InterPro ID Domain
IPR001841
IPR013083


The ubiquitination sites of PCGF1_HUMAN

No. Position Ubiquitinated Peptide Secondary Structure Solvent Accessibility Substrate Motifs PubMed ID
174CKSCIV K YLQTSK CCCCCC C CCCCCC 21.97%21890473
299QPLLNL K LDRVMQ HHHHHH H CCCHHH 47.47%21906983
3159SSFDHS K AHYYRY CCCHHH H HHHHHH 35.44%21890473
4190KSVLQN K YVRCSV CCCCHH H HHHHHH 31.96%1906983

The interacting network mediated by proteins: PCGF1_HUMAN

Metabolic pathway:
Kegg map ID Pathway
map03008Ribosome biogenesis in eukaryotes