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3OXK

Crystal structure of a histidine triad family protein from Entamoeba histolytica, bound to GMP

Functional Information from GO Data
ChainGOidnamespacecontents
A0000166molecular_functionnucleotide binding
A0003824molecular_functioncatalytic activity
A0005634cellular_componentnucleus
A0005737cellular_componentcytoplasm
A0016787molecular_functionhydrolase activity
A0043530molecular_functionadenosine 5'-monophosphoramidase activity
Functional Information from PDB Data
site_idAC1
Number of Residues4
DetailsBINDING SITE FOR RESIDUE ZN A 120
ChainResidue
ACYS5
ACYS8
AHIS47
AHIS97

site_idAC2
Number of Residues20
DetailsBINDING SITE FOR RESIDUE 5GP A 125
ChainResidue
AILE32
AASN33
ALEU41
AASN86
AGLY92
AGLN93
ATHR94
AVAL95
AHIS99
AHIS101
AHOH180
AHOH199
AHOH201
AHOH227
AHOH236
AILE6
APHE7
APHE29
ALYS30
AASP31

site_idAC3
Number of Residues3
DetailsBINDING SITE FOR RESIDUE EOH A 114
ChainResidue
ATYR21
AHOH138
AHOH238

Functional Information from PROSITE/UniProt
site_idPS00892
Number of Residues19
DetailsHIT_1 HIT domain signature. NigedAgQtVkHIHFHILG
ChainResidueDetails
AASN86-GLY104

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues107
DetailsDomain: {"description":"HIT","evidences":[{"source":"PROSITE-ProRule","id":"PRU00464","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues4
DetailsMotif: {"description":"Histidine triad motif"}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues1
DetailsActive site: {"description":"Tele-AMP-histidine intermediate","evidences":[{"source":"UniProtKB","id":"P49773","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues4
DetailsBinding site: {"evidences":[{"source":"PDB","id":"3OJ7","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"3OMF","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"3OXK","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues6
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"25945711","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"3OMF","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

238895

PDB entries from 2025-07-16

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