Poly [ADP-ribose] polymerase 1 - P09874 (PARP1_HUMAN)


Protein Feature View of PDB entries mapped to a UniProtKB sequence  

  • Number of PDB entries for P09874: 37
Involved in the base excision repair (BER) pathway, by catalyzing the poly(ADP-ribosyl)ation of a limited number of acceptor proteins involved in chromatin architecture and in DNA metabolism. This modification follows DNA damages and appears as an obligatory step in a detection/signaling pathway leading to the reparation of DNA strand breaks. Mediates the poly(ADP-ribosyl)ation of APLF and CHFR. Positively regulates the transcription of MTUS1 and negatively regulates the transcription of MTUS2/TIP150. With EEF1A1 and TXK, forms a complex that acts as a T-helper 1 (Th1) cell-specific transcription factor and binds the promoter of IFN-gamma to directly regulate its transcription, and is thus involved importantly in Th1 cytokine production. Required for PARP9 and DTX3L recruitment to DNA damage sites. PARP1-dependent PARP9-DTX3L-mediated ubiquitination promotes the rapid and specific recruitment of 53BP1/TP53BP1, UIMC1/RAP80, and BRCA1 to DNA damage sites. (data source: UniProt  )
Catalytic Activity

NAD+ + ADP-D-ribosyln-acceptor = nicotinamide + ADP-D-ribosyln+1-acceptor.

(data source: UniProt  )
Subunit structure
Component of a base excision repair (BER) complex, containing at least XRCC1, PARP2, POLB and LRIG3. Homo- and heterodimer with PARP2. Interacts with PARP3, APTX and SRY. The SWAP complex consists of NPM1, NCL, PARP1 and SWAP70. Interacts with TIAM2 (By similarity). Interacts (when poly-ADP-ribosylated) with CHD1L. Interacts with the DNA polymerase alpha catalytic subunit POLA1; this interaction functions as part of the control of replication fork progression. Interacts with EEF1A1, RNF4 and TXK. Interacts with RNF146. Interacts with ZNF423. Interacts with SNAI1 (via zinc fingers); the interaction requires SNAI1 to be poly-ADP-ribosylated and non-phosphorylated (active) by GSK3B. Interacts (when poly-ADP-ribosylated) with PARP9. Interacts with NR4A3; activates PARP1 by improving acetylation of PARP1 and suppressing the interaction between PARP1 and SIRT1. (data source: UniProt  )
Organism (common name): Human
Other Gene names: ADPRT PPOL
Chromosome Location: chr1:226549160- 226595630 (reverse strand)
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