Structure of PDB 1qb6 Chain A Binding Site BS02

Receptor Information
>1qb6 Chain A (length=223) Species: 9913 (Bos taurus) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
IVGGYTCGANTVPYQVSLNSGYHFCGGSLINSQWVVSAAHCYKSGIQVRL
GEDNINVVEGNEQFISASKSIVHPSYNSNTLNNDIMLIKLKSAASLNSRV
ASISLPTSCASAGTQCLISGWGNTKSSGTSYPDVLKCLKAPILSDSSCKS
AYPGQITSNMFCAGYLEGGKDSCQGDSGGPVVCSGKLQGIVSWGSGCAQK
NKPGVYTKVCNYVSWIKQTIASN
Ligand information
Ligand ID623
InChIInChI=1S/C20H17F2N5O2/c1-10-15(21)19(28-13-6-2-4-11(8-13)17(23)24)27-20(16(10)22)29-14-7-3-5-12(9-14)18(25)26/h2-9H,1H3,(H3,23,24)(H3,25,26)/p+1
InChIKeyZXIHYCYAQUQHSG-UHFFFAOYSA-O
SMILES
SoftwareSMILES
OpenEye OEToolkits 1.5.0[H]/N=C(/c1cccc(c1)Oc2c(c(c(c([nH+]2)Oc3cccc(c3)/C(=N/[H])/N)F)C)F)\N
ACDLabs 10.04Fc3c(Oc1cc(C(=[N@H])N)ccc1)[nH+]c(Oc2cccc(C(=[N@H])N)c2)c(F)c3C
CACTVS 3.341Cc1c(F)c(Oc2cccc(c2)C(N)=N)[nH+]c(Oc3cccc(c3)C(N)=N)c1F
OpenEye OEToolkits 1.5.0[H]N=C(c1cccc(c1)Oc2c(c(c(c([nH+]2)Oc3cccc(c3)C(=N[H])N)F)C)F)N
FormulaC20 H18 F2 N5 O2
Name3,3'-[3,5-DIFLUORO-4-METHYL-2,6-PYRIDYLENEBIS(OXY)]-BIS(BENZENECARBOXIMIDAMIDE);
ZK-805623
ChEMBL
DrugBankDB04432
ZINC
PDB chain1qb6 Chain A Residue 300 [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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PDB1qb6 Crystallographic analysis of potent and selective factor Xa inhibitors complexed to bovine trypsin.
Resolution1.8 Å
Binding residue
(original residue number in PDB)		L87 D177 S178 Q180 W199 G200 G202
Binding residue
(residue number reindexed from 1)		L81 D171 S172 Q174 W193 G194 G196
Annotation score1
Binding affinityMOAD: Ki=870nM
PDBbind-CN: -logKd/Ki=6.06,Ki=870nM
Enzymatic activity
Catalytic site (original residue number in PDB) H46 D90 Q180 G181 D182 S183 G184
Catalytic site (residue number reindexed from 1) H40 D84 Q174 G175 D176 S177 G178
Enzyme Commision number 3.4.21.4: trypsin.
Gene Ontology
Molecular Function
GO:0004175 endopeptidase activity
GO:0004252 serine-type endopeptidase activity
GO:0005515 protein binding
GO:0008236 serine-type peptidase activity
GO:0046872 metal ion binding
GO:0097655 serpin family protein binding
Biological Process
GO:0006508 proteolysis
GO:0007586 digestion
Cellular Component
GO:0005576 extracellular region
GO:0005615 extracellular space
GO:0097180 serine protease inhibitor complex

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Molecular Function
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Biological Process
View graph for
Cellular Component
External links
PDB RCSB:1qb6, PDBe:1qb6, PDBj:1qb6
PDBsum1qb6
PubMed10417407
UniProtP00760|TRY1_BOVIN Serine protease 1 (Gene Name=PRSS1)

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