Structure of PDB 4o2b Chain A Binding Site BS03

Receptor Information
>4o2b Chain A (length=439) Species: 9913 (Bos taurus) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
MRECISIHVGQAGVQIGNACWELYCLEHGIQPDGQMPSDKTIGGGDDSFN
TFFSETGAGKHVPRAVFVDLEPTVIDEVRTGTYRQLFHPEQLITGKEDAA
NNYARGHYTIGKEIIDLVLDRIRKLADQCTGLQGFLVFHSFGGGTGSGFT
SLLMERLSVDYGKKSKLEFSIYPAPQVSTAVVEPYNSILTTHTTLEHSDC
AFMVDNEAIYDICRRNLDIERPTYTNLNRLISQIVSSITASLRFDGALNV
DLTEFQTNLVPYPRIHFPLATYAPVISAEKAYHEQLSVAEITNACFEPAN
QMVKCDPRHGKYMACCLLYRGDVVPKDVNAAIATIKTKRSIQFVDWCPTG
FKVGINYQPPTVVPGGDLAKVQRAVCMLSNTTAIAEAWARLDHKFDLMYA
KRAFVHWYVGEGMEEGEFSEAREDMAALEKDYEEVGVDS
Ligand information
Ligand IDLOC
InChIInChI=1S/C22H25NO6/c1-12(24)23-16-8-6-13-10-19(27-3)21(28-4)22(29-5)20(13)14-7-9-18(26-2)17(25)11-15(14)16/h7,9-11,16H,6,8H2,1-5H3,(H,23,24)/t16-/m0/s1
InChIKeyIAKHMKGGTNLKSZ-INIZCTEOSA-N
SMILES
SoftwareSMILES
ACDLabs 10.04O=C(NC3C1=CC(=O)C(OC)=CC=C1c2c(cc(OC)c(OC)c2OC)CC3)C
OpenEye OEToolkits 1.5.0CC(=O)NC1CCc2cc(c(c(c2C3=CC=C(C(=O)C=C13)OC)OC)OC)OC
OpenEye OEToolkits 1.5.0CC(=O)N[C@H]1CCc2cc(c(c(c2C3=CC=C(C(=O)C=C13)OC)OC)OC)OC
CACTVS 3.341COC1=CC=C2C(=CC1=O)[CH](CCc3cc(OC)c(OC)c(OC)c23)NC(C)=O
CACTVS 3.341COC1=CC=C2C(=CC1=O)[C@H](CCc3cc(OC)c(OC)c(OC)c23)NC(C)=O
FormulaC22 H25 N O6
NameN-[(7S)-1,2,3,10-tetramethoxy-9-oxo-6,7-dihydro-5H-benzo[d]heptalen-7-yl]ethanamide;
COLCHICINE
ChEMBLCHEMBL107
DrugBankDB01394
ZINCZINC000000621853
PDB chain4o2b Chain B Residue 503 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
Receptor-Ligand Complex Structure
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PDB4o2b The Novel Microtubule-Destabilizing Drug BAL27862 Binds to the Colchicine Site of Tubulin with Distinct Effects on Microtubule Organization.
Resolution2.3 Å
Binding residue
(original residue number in PDB)		S178 A180 V181
Binding residue
(residue number reindexed from 1)		S178 A180 V181
Annotation score1
Binding affinityPDBbind-CN: -logKd/Ki=5.74,Ki=1.8uM
Enzymatic activity
Enzyme Commision number 3.6.5.-
Gene Ontology
Molecular Function
GO:0003924 GTPase activity
GO:0005200 structural constituent of cytoskeleton
GO:0005525 GTP binding
GO:0016787 hydrolase activity
GO:0046872 metal ion binding
Biological Process
GO:0000226 microtubule cytoskeleton organization
GO:0000278 mitotic cell cycle
GO:0007017 microtubule-based process
Cellular Component
GO:0005737 cytoplasm
GO:0005829 cytosol
GO:0005856 cytoskeleton
GO:0005874 microtubule
GO:0015630 microtubule cytoskeleton

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Molecular Function
View graph for
Biological Process
View graph for
Cellular Component
External links
PDB RCSB:4o2b, PDBe:4o2b, PDBj:4o2b
PDBsum4o2b
PubMed24530796
UniProtP81947|TBA1B_BOVIN Tubulin alpha-1B chain

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