Structure of PDB 1c8k Chain A Binding Site BS02

Receptor Information
>1c8k Chain A (length=830) Species: 9986 (Oryctolagus cuniculus) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
ISVRGLAGVENVTELKKNFNRHLHFTLVKDRNVATPRDYYFALAHTVRDH
LVGRWIRTQQHYYEKDPKRIYYLSLEFYMGRTLQNTMVNLALENACDEAT
YQLGLDMEELEEIEEDAGLGNGGLGRLAACFLDSMATLGLAAYGYGIRYE
FGIFNQKICGGWQMEEADDWLRYGNPWEKARPEFTLPVHFYGRVEHTSQG
AKWVDTQVVLAMPYDTPVPGYRNNVVNTMRLWSAKAPNDFNLKDFNVGGY
IQAVLDRNLAENISRVLYPNDNFFEGKELRLKQEYFVVAATLQDIIRRFK
SSKFGCRDPVRTNFDAFPDKVAIQLNDTHPSLAIPELMRVLVDLERLDWD
KAWEVTVKTCAYTNHTVIPEALERWPVHLLETLLPRHLQIIYEINQRFLN
RVAAAFPGDVDRLRRMSLVEEGAVKRINMAHLCIAGSHAVNGVARIHSEI
LKKTIFKDFYELEPHKFQNKTNGITPRRWLVLCNPGLAEIIAERIGEEYI
SDLDQLRKLLSYVDDEAFIRDVAKVKQENKLKFAAYLEREYKVHINPNSL
FDVQVKRIHEYKRQLLNCLHVITLYNRIKKEPNKFVVPRTVMIGGKAAPG
YHMAKMIIKLITAIGDVVNHDPVVGDRLRVIFLENYRVSLAEKVIPAADL
SEQISTAGTEASGTGNMKFMLNGALTIGTMDGANVEMAEEAGEENFFIFG
MRVEDVDRLDQRGYNAQEYYDRIPELRQIIEQLSSGFFSPKQPDLFKDIV
NMLMHHDRFKVFADYEEYVKCQERVSALYKNPREWTRMVIRNIATSGKFS
SDRTIAQYAREIWGVEPSRQRLPAPDEKIP
Ligand information
Ligand IDCPB
InChIInChI=1S/C21H20ClNO5/c1-23-7-6-12(17(27)10-23)19-14(24)8-15(25)20-16(26)9-18(28-21(19)20)11-4-2-3-5-13(11)22/h2-5,8-9,12,17,24-25,27H,6-7,10H2,1H3/t12-,17+/m0/s1
InChIKeyBIIVYFLTOXDAOV-YVEFUNNKSA-N
SMILES
SoftwareSMILES
OpenEye OEToolkits 1.5.0CN1CCC(C(C1)O)c2c(cc(c3c2OC(=CC3=O)c4ccccc4Cl)O)O
ACDLabs 10.04Clc4ccccc4C=2Oc1c(c(O)cc(O)c1C(=O)C=2)C3CCN(C)CC3O
OpenEye OEToolkits 1.5.0C[N@]1CC[C@@H]([C@@H](C1)O)c2c(cc(c3c2OC(=CC3=O)c4ccccc4Cl)O)O
CACTVS 3.341CN1CC[CH]([CH](O)C1)c2c(O)cc(O)c3C(=O)C=C(Oc23)c4ccccc4Cl
CACTVS 3.341CN1CC[C@@H]([C@H](O)C1)c2c(O)cc(O)c3C(=O)C=C(Oc23)c4ccccc4Cl
FormulaC21 H20 Cl N O5
Name2-(2-CHLORO-PHENYL)-5,7-DIHYDROXY-8-(3-HYDROXY-1-METHYL-PIPERIDIN-4-YL)-4H-BENZOPYRAN-4-ONE;
FLAVOPIRIDOL
ChEMBLCHEMBL428690
DrugBankDB03496
ZINCZINC000021288966
PDB chain1c8k Chain A Residue 940 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
Receptor-Ligand Complex Structure
Global viewLocal viewStructure summary

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PDB1c8k Flavopiridol inhibits glycogen phosphorylase by binding at the inhibitor site.
Resolution1.76 Å
Binding residue
(original residue number in PDB)		F285 E382 A610 G612 Y613
Binding residue
(residue number reindexed from 1)		F273 E370 A598 G600 Y601
Annotation score1
Binding affinityMOAD: ic50=1uM
PDBbind-CN: -logKd/Ki=6.00,IC50=1uM
BindingDB: IC50=1200nM
Enzymatic activity
Catalytic site (original residue number in PDB) H377 K568 R569 K574 T676 K680
Catalytic site (residue number reindexed from 1) H365 K556 R557 K562 T664 K668
Enzyme Commision number 2.4.1.1: glycogen phosphorylase.
Gene Ontology
Molecular Function
GO:0000166 nucleotide binding
GO:0004645 1,4-alpha-oligoglucan phosphorylase activity
GO:0008184 glycogen phosphorylase activity
GO:0016757 glycosyltransferase activity
GO:0030170 pyridoxal phosphate binding
Biological Process
GO:0005975 carbohydrate metabolic process
GO:0005977 glycogen metabolic process
GO:0005980 glycogen catabolic process
Cellular Component
GO:0005737 cytoplasm
GO:0098723 skeletal muscle myofibril

View graph for
Molecular Function
View graph for
Biological Process
View graph for
Cellular Component
External links
PDB RCSB:1c8k, PDBe:1c8k, PDBj:1c8k
PDBsum1c8k
PubMed10924512
UniProtP00489|PYGM_RABIT Glycogen phosphorylase, muscle form (Gene Name=PYGM)

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