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1TL9

High resolution crystal structure of calpain I protease core in complex with leupeptin

Functional Information from GO Data
ChainGOidnamespacecontents
A0004198molecular_functioncalcium-dependent cysteine-type endopeptidase activity
A0006508biological_processproteolysis
Functional Information from PDB Data
site_idAC1
Number of Residues6
DetailsBINDING SITE FOR RESIDUE CA A 1
ChainResidue
AVAL99
AGLY101
AASP106
AGLU185
AHOH389
AHOH465

site_idAC2
Number of Residues6
DetailsBINDING SITE FOR RESIDUE CA A 2
ChainResidue
AASP331
AGLU333
AHOH401
AGLU302
AASP309
AMET329

site_idAC3
Number of Residues17
DetailsBINDING SITE FOR CHAIN B OF LEUPEPTIN INHIBITOR
ChainResidue
AGLN57
AASP59
AGLU72
AGLN109
AGLY113
AASP114
ACYS115
ATRP116
ASER206
AGLY207
AGLY208
AGLU261
AGLY271
AHOH531
AHOH589
BHOH182
BHOH258

Functional Information from PROSITE/UniProt
site_idPS00139
Number of Residues12
DetailsTHIOL_PROTEASE_CYS Eukaryotic thiol (cysteine) proteases cysteine active site. QGaLGDCWLlAA
ChainResidueDetails
AGLN109-ALA120

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues3
DetailsACT_SITE: ACT_SITE => ECO:0000250
ChainResidueDetails
AHIS272
AASN296
ACYS115

site_idSWS_FT_FI2
Number of Residues1
DetailsSITE: Cleavage; for 75 kDa form => ECO:0000250
ChainResidueDetails
AGLY27

site_idSWS_FT_FI3
Number of Residues1
DetailsMOD_RES: Phosphothreonine => ECO:0000250|UniProtKB:P07384
ChainResidueDetails
ATHR354

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PDB entries from 2024-05-29

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