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2ISH

Botulinum Neurotoxin A Light Chain WT Crystal Form C

Functional Information from GO Data
ChainGOidnamespacecontents
A0004222molecular_functionmetalloendopeptidase activity
A0006508biological_processproteolysis
A0008270molecular_functionzinc ion binding
B0004222molecular_functionmetalloendopeptidase activity
B0006508biological_processproteolysis
B0008270molecular_functionzinc ion binding
Functional Information from PDB Data
site_idAC1
Number of Residues4
DetailsBINDING SITE FOR RESIDUE ZN A 500
ChainResidue
AHIS223
AHIS227
AGLU262
AHOH648

site_idAC2
Number of Residues4
DetailsBINDING SITE FOR RESIDUE ZN B 501
ChainResidue
BHIS223
BHIS227
BGLU262
BHOH646

Functional Information from PROSITE/UniProt
site_idPS00142
Number of Residues10
DetailsZINC_PROTEASE Neutral zinc metallopeptidases, zinc-binding region signature. TLAHELIHAG
ChainResidueDetails
ATHR220-GLY229

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues2
DetailsActive site: {"description":"Proton acceptor","evidences":[{"source":"PROSITE-ProRule","id":"PRU10095","evidenceCode":"ECO:0000255"},{"source":"PubMed","id":"10694409","evidenceCode":"ECO:0000305"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues4
DetailsSite: {"description":"Transition state stabilizer","evidences":[{"source":"PubMed","id":"11827515","evidenceCode":"ECO:0000305"}]}
ChainResidueDetails

Catalytic Information from CSA
site_idCSA1
Number of Residues3
DetailsAnnotated By Reference To The Literature 1i1e
ChainResidueDetails
AGLU262
ATYR366
AARG363

site_idCSA2
Number of Residues3
DetailsAnnotated By Reference To The Literature 1i1e
ChainResidueDetails
BGLU262
BTYR366
BARG363

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PDB entries from 2026-02-04

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