Adenosine diphosphate ribose

Adenosine diphosphate ribose (ADPR) is an ester molecule formed into chains by the enzyme poly ADP ribose polymerase.^[1] ADPR is created from cyclic ADP-ribose (cADPR) by the CD38 enzyme using nicotinamide adenine dinucleotide (NAD⁺) as a cofactor.^[1]

Quick Facts Names, Identifiers ...

Adenosine diphosphate ribose

Names
Other names ADP ribose ADPR Adenosine 5'-diphosphoribose
Identifiers
CAS Number	20762-30-5 N
3D model (JSmol)	Interactive image
ChEMBL	ChEMBL1161865 N
ChemSpider	388340 N
MeSH	Adenosine+Diphosphate+Ribose
PubChem CID	439200
UNII	XV3S4KV26E Y
InChI InChI=1S/C15H23N5O14P2/c16-12-7-13(18-3-17-12)20(4-19-7)14-10(24)9(23)6(31-14)2-30-35(26,27)34-36(28,29)33-15-11(25)8(22)5(1-21)32-15/h3-6,8-11,14-15,21-25H,1-2H2,(H4,16,17,18,26,27,28,29)/p+1/t5-,6+,8-,9+,10+,11-,14+,15+/m0/s1 N Key: YNCNQNWXUFCWJS-DKMYFHGXSA-O N InChI=1/C15H23N5O14P2/c16-12-7-13(18-3-17-12)20(4-19-7)14-10(24)9(23)6(31-14)2-30-35(26,27)34-36(28,29)33-15-11(25)8(22)5(1-21)32-15/h3-6,8-11,14-15,21-25H,1-2H2,(H4,16,17,18,26,27,28,29)/p+1/t5-,6+,8-,9+,10+,11-,14+,15+/m0/s1 Key: YNCNQNWXUFCWJS-LKOYDKQFBH
SMILES O=P(O[C@H]1O[C@H]([C@H](O)[C@@H]1O)CO)(O)OP(=O)(OC[C@H]4O[C@@H](n3c2ncnc(N)c2nc3)[C@H](O)[C@@H]4O)O
Properties
Chemical formula	C15H23N5O14P2
Molar mass	559.316 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) Infobox references

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ADPR binds to and activates the TRPM2 ion channel.^[2] ADPR is the most potent agonist of the TRPM2 channel.^[3] cADPR also binds to TPRM2, and the action of both molecules is synergistic, with both molecules enhancing the action of the other molecule in activating the TRPM2 channel.^[4] Researchers are not sure how the Adenosine diphosphate reacts with the TRPM2 channel, but the ribose sugar may play a role in activating the TRPM2 ion channel.^[5]

Researchers believe that co-targeting DNA-dependent protein kinase and poly(adenosine diphosphate-ribose) polymerase-1 does not promote apoptosis or mitotic catastrophe of cancer cells after radiation.^[6]