Structure of PDB 1qb9 Chain A Binding Site BS03

Receptor Information
>1qb9 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 ID806
InChIInChI=1S/C31H31N5O/c1-20(32)35-14-12-25(13-15-35)37-26-10-11-28-27-4-2-3-5-29(27)36(30(28)18-26)19-21-6-7-22-8-9-23(31(33)34)17-24(22)16-21/h2-11,16-18,25,32H,12-15,19H2,1H3,(H3,33,34)/b32-20-
InChIKeyDZLGSWPXZYDHBD-RGXNXFOYSA-N
SMILES
SoftwareSMILES
OpenEye OEToolkits 1.5.0[H]N=C(C)N1CCC(CC1)Oc2ccc3c4ccccc4n(c3c2)Cc5ccc6ccc(cc6c5)C(=N)N
OpenEye OEToolkits 1.5.0[H]/N=C(/C)\N1CCC(CC1)Oc2ccc3c4ccccc4n(c3c2)Cc5ccc6ccc(cc6c5)C(=N)N
ACDLabs 10.04[N@H]=C(N6CCC(Oc3ccc2c1ccccc1n(c2c3)Cc5cc4cc(C(=[N@H])N)ccc4cc5)CC6)C
CACTVS 3.341CC(=N)N1CCC(CC1)Oc2ccc3c(c2)n(Cc4ccc5ccc(cc5c4)C(N)=N)c6ccccc36
FormulaC31 H31 N5 O
Name7-[[2-[[1-(1-IMINOETHYL)PIPERIDIN-4-YL]OXY]-9H-CARBOZOL-9-YL]METHYL]NAPHTHALENE-2-CARBOXIMIDAMID;
ZK-806450
ChEMBL
DrugBank
ZINC
PDB chain1qb9 Chain A Residue 300 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
Receptor-Ligand Complex Structure
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PDB1qb9 Crystallographic analysis of potent and selective factor Xa inhibitors complexed to bovine trypsin.
Resolution1.8 Å
Binding residue
(original residue number in PDB)		N85 T86 L87 Q161 D177 S178 W199 G200 G202
Binding residue
(residue number reindexed from 1)		N79 T80 L81 Q155 D171 S172 W193 G194 G196
Annotation score1
Binding affinityMOAD: Ki=36nM
PDBbind-CN: -logKd/Ki=7.44,Ki=36nM
BindingDB: Ki=36nM
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
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Cellular Component
External links
PDB RCSB:1qb9, PDBe:1qb9, PDBj:1qb9
PDBsum1qb9
PubMed10417407
UniProtP00760|TRY1_BOVIN Serine protease 1 (Gene Name=PRSS1)

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