Page last updated: 2024-10-24

poly-ADP-D-ribose binding

Definition

Target type: molecularfunction

Binding to polymeric ADP-D-ribose, a polymer that is composed of poly-ADP-D-ribose units linked through 1,2-glycosidic bonds at the ribose ring. [GOC:mah, GOC:sart, PMID:20088964]

Poly-ADP-ribose (PAR) binding is a molecular function that involves the recognition and interaction of proteins with PAR, a highly branched polymer of ADP-ribose units. PAR is synthesized by PAR polymerases (PARPs) and plays a crucial role in various cellular processes, including DNA repair, transcription, apoptosis, and inflammation. PAR binding proteins contain specific domains that bind to PAR, such as the PAR-binding zinc finger (PBZ) domain, the macro domain, and the WWE domain. These domains are characterized by their ability to recognize the unique structural features of PAR, such as its negatively charged phosphate groups and its branched structure. Upon binding to PAR, PAR binding proteins can act as scaffold proteins to recruit other proteins to sites of DNA damage or as signal transducers to initiate downstream signaling pathways. For example, PAR binding proteins involved in DNA repair, such as PARP1, can recruit other DNA repair factors to the site of damage to facilitate DNA repair. Other PAR binding proteins, such as the apoptotic protease-activating factor 1 (Apaf-1), can bind to PAR and initiate the caspase cascade, leading to apoptosis. Therefore, PAR binding is a crucial molecular function involved in a wide range of cellular processes and is essential for maintaining cellular homeostasis.'
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Proteins (1)

ProteinDefinitionTaxonomy
Poly [ADP-ribose] polymerase 2A poly [ADP-ribose] polymerase 2 that is encoded in the genome of human. [PRO:DNx]Homo sapiens (human)

Compounds (14)

CompoundDefinitionClassesRoles
pj-34PJ34 : A member of the class of phenanthridines that is 5,6-dihydrophenanthridine substituted at positions 2 and 6 by (N,N-dimethylglycyl)amino and oxo groups, respectively. It is a potent inhibitor of poly(ADP-ribose) polymerases PARP1 and PARP2 (IC50 of 110 nM and 86 nM, respectively) and exhibits anti-cancer, cardioprotective and neuroprotective properties.phenanthridines;
secondary carboxamide;
tertiary amino compound
angiogenesis inhibitor;
anti-inflammatory agent;
antiatherosclerotic agent;
antineoplastic agent;
apoptosis inducer;
cardioprotective agent;
EC 2.4.2.30 (NAD(+) ADP-ribosyltransferase) inhibitor;
neuroprotective agent
4-Methoxybenzamidebenzamides
amentoflavonebiflavonoid;
hydroxyflavone;
ring assembly
angiogenesis inhibitor;
antiviral agent;
cathepsin B inhibitor;
P450 inhibitor;
plant metabolite
rucaparibAG14447: Poly(ADP-ribose) polymerase inhibitor; structure in first sourceazepinoindole;
caprolactams;
organofluorine compound;
secondary amino compound
antineoplastic agent;
EC 2.4.2.30 (NAD(+) ADP-ribosyltransferase) inhibitor
veliparibbenzimidazolesEC 2.4.2.30 (NAD(+) ADP-ribosyltransferase) inhibitor
olaparibcyclopropanes;
monofluorobenzenes;
N-acylpiperazine;
phthalazines
antineoplastic agent;
apoptosis inducer;
EC 2.4.2.30 (NAD(+) ADP-ribosyltransferase) inhibitor
niraparib2-[4-(piperidin-3-yl)phenyl]-2H-indazole-7-carboxamide : A member of the class of indazoles that is 2H-indazole substituted by 4-(piperidin-3-yl)phenyl and aminocarbonyl groups at positions 2 and 7, respectively. It is a potent PARP1 inhibitor with IC50 of 3.2 nM.benzenes;
indazoles;
piperidines;
primary carboxamide
antineoplastic agent;
EC 2.4.2.30 (NAD(+) ADP-ribosyltransferase) inhibitor
niraparibniraparib : A 2-[4-(piperidin-3-yl)phenyl]-2H-indazole-7-carboxamide that has S-configuration. It is a potent inhibitor of PARP1 and PARP2 (IC50 of 3.8 and 2.1 nM, respectively) and approved as a first-line maintenance treatment for women with advanced ovarian cancer after responding to platinum-based chemotherapy.

niraparib: structure in first source
2-[4-(piperidin-3-yl)phenyl]-2H-indazole-7-carboxamideantineoplastic agent;
apoptosis inducer;
EC 2.4.2.30 (NAD(+) ADP-ribosyltransferase) inhibitor;
radiosensitizing agent
iwr-1 endoIWR-1-endo : A dicarboximide having an endo bridged phthalimide structure, substituted at nitrogen by a 4-(quinolin-8-ylcarbamoyl)benzoyl group.benzamides;
bridged compound;
dicarboximide;
quinolines
axin stabilizer;
Wnt signalling inhibitor
nms-p118NMS-P118: a PARP-1 inhibitor; structure in first source
g007-lkG007-LK: potent and specific small-molecule tankyrase inhibitor; structure in first source
xav939XAV939 : A thiopyranopyrimidine in which a 7,8-dihydro-5H-thiopyrano[4,3-d]pyrimidine skeleton is substituted at C-4 by a hydroxy group and at C-2 by a para-(trifluoromethyl)phenyl group.

XAV939: selectively inhibits beta-catenin-mediated transcription; structure in first source
(trifluoromethyl)benzenes;
thiopyranopyrimidine
tankyrase inhibitor
bmn 673talazoparib: inhibits both PARP1 and PARP2; structure in first source
nvp-tnks656