Structure of PDB 1c1r Chain A Binding Site BS04

Receptor Information
>1c1r 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 IDBAI
InChIInChI=1S/C16H14N6/c17-16(18)9-5-6-12-13(7-9)22-15(21-12)8-14-19-10-3-1-2-4-11(10)20-14/h1-7H,8H2,(H3,17,18)(H,19,20)(H,21,22)
InChIKeyKKJYVDXDZURHMA-UHFFFAOYSA-N
SMILES
SoftwareSMILES
ACDLabs 10.04[N@H]=C(c4ccc1c(nc(n1)Cc2nc3ccccc3n2)c4)N
CACTVS 3.341NC(=N)c1ccc2[nH]c(Cc3[nH]c4ccccc4n3)nc2c1
OpenEye OEToolkits 1.5.0c1ccc2c(c1)[nH]c(n2)Cc3[nH]c4ccc(cc4n3)C(=N)N
FormulaC16 H14 N6
Name(5-AMIDINO-2-BENZIMIDAZOLYL)(2-BENZIMIDAZOLYL)METHANE;
HEMI-BABIM
ChEMBLCHEMBL46148
DrugBankDB01767
ZINCZINC000002047318
PDB chain1c1r Chain A Residue 246 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
Receptor-Ligand Complex Structure
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PDB1c1r Design of potent selective zinc-mediated serine protease inhibitors.
Resolution1.37 Å
Binding residue
(original residue number in PDB)		D189 S190 V213 G219 C220
Binding residue
(residue number reindexed from 1)		D171 S172 V191 G196 C197
Annotation score1
Binding affinityMOAD: Ki=0.0235uM
PDBbind-CN: -logKd/Ki=7.63,Ki=0.0235uM
Enzymatic activity
Catalytic site (original residue number in PDB) H57 D102 Q192 G193 D194 S195 G196
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:1c1r, PDBe:1c1r, PDBj:1c1r
PDBsum1c1r
PubMed9468142
UniProtP00760|TRY1_BOVIN Serine protease 1 (Gene Name=PRSS1)

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