Structure of PDB 1ent Chain E Binding Site BS01

Receptor Information
>1ent Chain E (length=330) Species: 5116 (Cryphonectria parasitica) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
STGSATTTPIDSLDDAYITPVQIGTPAQTLNLDFDTGSSDLWVFSSETTA
SEVDGQTIYTPSKSTTAKLLSGATWSISYGDGSSSSGDVYTDTVSVGGLT
VTGQAVESAKKVSSSFTEDSTIDGLLGLAFSTLNTVSPTQQKTFFDNAKA
SLDSPVFTADLGYHAPGTYNFGFIDTTAYTGSITYTAVSTKQGFWEWTST
GYAVGSGTFKSTSIDGIADTGTTLLYLPATVVSAYWAQVSGAKSSSSVGG
YVFPCSATLPSFTFGVGSARIVIPGDYIDFGPISTGSSSCFGGIQSSAGI
GINIFGDVALKAAFVVFNGATTPTLGFASK
Ligand information
Ligand ID0EM
InChIInChI=1S/C32H51N6O7P/c1-8-22(4)17-34-27(39)19-46(43,44)28(14-21(2)3)38-30(41)26(16-24-18-33-20-35-24)36-29(40)25(15-23-12-10-9-11-13-23)37-31(42)45-32(5,6)7/h9-13,18,20-22,25-26,28H,8,14-17,19H2,1-7H3,(H,33,35)(H,34,39)(H,36,40)(H,37,42)(H,38,41)(H,43,44)/p+1/t22-,25-,26-,28+/m0/s1
InChIKeyZQDBBPUTYSTPQE-DYYCDWSUSA-O
SMILES
SoftwareSMILES
CACTVS 3.341CC[CH](C)CNC(=O)C[P](O)(=O)[CH](CC(C)C)NC(=O)[CH](Cc1c[nH]c[nH+]1)NC(=O)[CH](Cc2ccccc2)NC(=O)OC(C)(C)C
CACTVS 3.341CC[C@H](C)CNC(=O)C[P@](O)(=O)[C@H](CC(C)C)NC(=O)[C@H](Cc1c[nH]c[nH+]1)NC(=O)[C@H](Cc2ccccc2)NC(=O)OC(C)(C)C
ACDLabs 10.04O=C(NCC(C)CC)CP(=O)(O)C(NC(=O)C(NC(=O)C(NC(=O)OC(C)(C)C)Cc1ccccc1)Cc2cnc[nH+]2)CC(C)C
FormulaC32 H52 N6 O7 P
NameN-(tert-butoxycarbonyl)-L-phenylalanyl-N-{(1S)-1-[(R)-hydroxy(2-{[(2S)-2-methylbutyl]amino}-2-oxoethyl)phosphoryl]-3-methylbutyl}-3-(1H-imidazol-3-ium-4-yl)-L-alaninamide;
PD-130,328
ChEMBL
DrugBank
ZINC
PDB chain1ent Chain E Residue 822 [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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PDB1ent X-ray analyses of aspartic proteinases. The three-dimensional structure at 2.1 A resolution of endothiapepsin.
Resolution1.9 Å
Binding residue
(original residue number in PDB)		D12 D32 Y75 G76 D77 F189 D215 G217 T218 T219 I297
Binding residue
(residue number reindexed from 1)		D15 D35 Y79 G80 D81 F194 D219 G221 T222 T223 I300
Annotation score1
Binding affinityMOAD: Ki=110nM
PDBbind-CN: -logKd/Ki=6.96,Ki=110nM
Enzymatic activity
Enzyme Commision number 3.4.23.22: endothiapepsin.
Gene Ontology
Molecular Function
GO:0004190 aspartic-type endopeptidase activity
Biological Process
GO:0006508 proteolysis

View graph for
Molecular Function
View graph for
Biological Process
External links
PDB RCSB:1ent, PDBe:1ent, PDBj:1ent
PDBsum1ent
PubMed2179568
UniProtP11838|CARP_CRYPA Endothiapepsin (Gene Name=EAPA)

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