Structure of PDB 1bra Chain A Binding Site BS02

Receptor Information
>1bra Chain A (length=223) Species: 10117 (Rattus rattus) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
IVGGYTCQENSVPYQVSLNSGYHFCGGSLINDQWVVSAAHCYKSRIQVRL
GEHNINVLEGNEQFVNAAKIIKHPNFDRKTLNNDIMLIKLSSPVKLNARV
ATVALPSSCAPAGTQCLISGWGNTLSSGVNEPDLLQCLDAPLLPQADCEA
SYPGKITDNMVCVGFLEGGKGSCQGDSGGPVVCNGELQGIVSWGYGCALP
DNPDVYTKVCNYVDWIQDTIAAN
Ligand information
Ligand IDBEN
InChIInChI=1S/C7H8N2/c8-7(9)6-4-2-1-3-5-6/h1-5H,(H3,8,9)
InChIKeyPXXJHWLDUBFPOL-UHFFFAOYSA-N
SMILES
SoftwareSMILES
OpenEye OEToolkits 1.5.0[H]/N=C(\c1ccccc1)/N
CACTVS 3.341NC(=N)c1ccccc1
ACDLabs 10.04[N@H]=C(N)c1ccccc1
OpenEye OEToolkits 1.5.0[H]N=C(c1ccccc1)N
FormulaC7 H8 N2
NameBENZAMIDINE
ChEMBLCHEMBL20936
DrugBank
ZINCZINC000000036634
PDB chain1bra 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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PDB1bra Relocating a negative charge in the binding pocket of trypsin.
Resolution2.2 Å
Binding residue
(original residue number in PDB)		S190 Q192 S195 V213 G216 G219
Binding residue
(residue number reindexed from 1)		S172 Q174 S177 V191 G194 G196
Annotation score1
Binding affinityMOAD: Ki=15000uM
PDBbind-CN: -logKd/Ki=1.82,Ki=15000uM
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:0004252 serine-type endopeptidase activity
GO:0005509 calcium ion binding
GO:0005515 protein binding
GO:0008236 serine-type peptidase activity
GO:0046872 metal ion binding
Biological Process
GO:0006508 proteolysis
GO:0007584 response to nutrient
GO:0007586 digestion
GO:0030574 collagen catabolic process
Cellular Component
GO:0005576 extracellular region
GO:0005615 extracellular space

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Molecular Function
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Biological Process
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Cellular Component
External links
PDB RCSB:1bra, PDBe:1bra, PDBj:1bra
PDBsum1bra
PubMed8478942
UniProtP00763|TRY2_RAT Anionic trypsin-2 (Gene Name=Prss2)

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