CATH Classification
| Level | CATH Code | Description | 
|---|---|---|
 
	 | 
    1 | Mainly Alpha | 
 
	 | 
    1.20 | Up-down Bundle | 
 
	 | 
    1.20.142 | Poly(ADP-ribose) Polymerase; domain 1 | 
 
	 | 
    1.20.142.10 | Poly(ADP-ribose) polymerase, regulatory domain | 
Domain Context
CATH Clusters
| Superfamily | Poly(ADP-ribose) polymerase, regulatory domain | 
| Functional Family | Poly [ADP-ribose] polymerase | 
Enzyme Information
| 2.4.2.- | 
							 Pentosyltransferases. 
							based on mapping to UniProt P09874 		
							
							
						 | 
					
| 2.4.2.30 | 
							 NAD(+) ADP-ribosyltransferase. 
							based on mapping to UniProt P09874 		
							NAD(+) + (ADP-D-ribosyl)(n)-acceptor = nicotinamide + (ADP-D- ribosyl)(n+1)-acceptor. 
							-!- The ADP-D-ribosyl group of NAD(+) is transferred to an acceptor carboxy group on a histone or the enzyme itself, and further ADP- ribosyl groups are transferred to the 2'-position of the terminal adenosine moiety, building up a polymer with an average chain length of 20-30 units. 
						 | 
					
UniProtKB Entries (1)
| P09874 | 
						 PARP1_HUMAN 
						Homo sapiens 
						Poly [ADP-ribose] polymerase 1 
					 | 
				
PDB Structure
| PDB | 4RV6 | 
| External Links | |
| Method | X-RAY DIFFRACTION | 
| Organism | |
| Primary Citation | 
					 Structural Basis for Potency and Promiscuity in Poly(ADP-ribose) Polymerase (PARP) and Tankyrase Inhibitors. 
					    
					    J. Med. Chem. 
					    
					 | 
			
