Structure of PDB 2k0g Chain A Binding Site BS01

Receptor Information

>2k0g Chain A (length=142) Species: 266835 (Mesorhizobium japonicum MAFF 303099)

GSQEVRRGDFVRNWQLVAAVPLFQKLGPAVLVEIVRALRARTVPAGAVIC
RIGEPGDRMFFVVEGSVSVATPNPVELGPGAFFGEMALISGEPRSATVSA
ATTVSLLSLHSADFQMLCSSSPEIAEIFRKTALERRGAAASA

Ligand information

• Ligand ID: CMP
• InChI: InChI=1S/C10H12N5O6P/c11-8-5-9(13-2-12-8)15(3-14-5)10-6(16)7-4(20-10)1-19-22(17,18)21-7/h2-4,6-7,10,16H,1H2,(H,17,18)(H2,11,12,13)/t4-,6-,7-,10-/m1/s1
• InChIKey: IVOMOUWHDPKRLL-KQYNXXCUSA-N
• SMILES:
  OpenEye OEToolkits 1.5.0: c1nc(c2c(n1)n(cn2)C3C(C4C(O3)COP(=O)(O4)O)O)N
  ACDLabs 10.04: O=P3(OCC4OC(n1c2ncnc(N)c2nc1)C(O)C4O3)O
  OpenEye OEToolkits 1.5.0: c1nc(c2c(n1)n(cn2)[C@H]3[C@@H]([C@H]4[C@H](O3)CO[P@](=O)(O4)O)O)N
  CACTVS 3.341: Nc1ncnc2n(cnc12)[CH]3O[CH]4CO[P](O)(=O)O[CH]4[CH]3O
  CACTVS 3.341: Nc1ncnc2n(cnc12)[C@@H]3O[C@@H]4CO[P@](O)(=O)O[C@H]4[C@H]3O
• Formula: C10 H12 N5 O6 P
• Name: ADENOSINE-3',5'-CYCLIC-MONOPHOSPHATE;
  CYCLIC AMP;
  CAMP
• ChEMBL: CHEMBL316966
• DrugBank: DB02527
• ZINC: ZINC000003873977
• PDB chain: 2k0g Chain A Residue 370

Receptor-Ligand Complex Structure

Structure summary

• PDB: 2k0g Solution structure of the Mesorhizobium loti K1 channel cyclic nucleotide-binding domain in complex with cAMP.
• Resolution: N/A
• Binding residue (original residue number in PDB): F296 G297 M299 A300 R307 S308 R348
• Binding residue (residue number reindexed from 1): F83 G84 M86 A87 R94 S95 R135
• Annotation score: 4
• Binding affinity: PDBbind-CN: -logKd/Ki=6.97,Kd=107nM

Gene Ontology

Molecular Function

• GO:0005221 intracellularly cyclic nucleotide-activated monoatomic cation channel activity

External links

• PDB: RCSB:2k0g, PDBe:2k0g, PDBj:2k0g
• PDBsum: 2k0g
• PubMed: 19465888
• UniProt: Q98GN8|CNGK1_RHILO Cyclic nucleotide-gated potassium channel mll3241 (Gene Name=mll3241)