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4K3A

The structure of a glycoside hydrolase family 81 endo-[beta]-1,3-glucanase

Functional Information from GO Data
ChainGOidnamespacecontents
A0000272biological_processpolysaccharide catabolic process
A0005576cellular_componentextracellular region
A0016787molecular_functionhydrolase activity
A0016798molecular_functionhydrolase activity, acting on glycosyl bonds
A0042973molecular_functionglucan endo-1,3-beta-D-glucosidase activity
A0052861molecular_functionendo-1,3(4)-beta-glucanase activity
A0071555biological_processcell wall organization
B0000272biological_processpolysaccharide catabolic process
B0005576cellular_componentextracellular region
B0016787molecular_functionhydrolase activity
B0016798molecular_functionhydrolase activity, acting on glycosyl bonds
B0042973molecular_functionglucan endo-1,3-beta-D-glucosidase activity
B0052861molecular_functionendo-1,3(4)-beta-glucanase activity
B0071555biological_processcell wall organization
Functional Information from PDB Data
site_idAC1
Number of Residues9
DetailsBINDING SITE FOR RESIDUE SO4 A 801
ChainResidue
AGLY73
ATYR74
AGLY75
AGLY76
AASN77
AARG116
AHOH985
AHOH1169
AHOH1184

site_idAC2
Number of Residues8
DetailsBINDING SITE FOR RESIDUE SO4 B 801
ChainResidue
BGLY73
BTYR74
BGLY75
BGLY76
BASN77
BARG116
BHOH1078
BHOH1129

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues245
DetailsRegion: {"description":"beta-sandwich subdomain","evidences":[{"source":"PROSITE-ProRule","id":"PRU01352","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues180
DetailsRegion: {"description":"alpha/beta subdomain","evidences":[{"source":"PROSITE-ProRule","id":"PRU01352","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues4
DetailsRegion: {"description":"May provide specificity for triple-helical beta-glucan","evidences":[{"source":"PubMed","id":"34801773","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"5XBZ","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"5XC2","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues2
DetailsActive site: {"evidences":[{"source":"PROSITE-ProRule","id":"PRU01352","evidenceCode":"ECO:0000255"},{"source":"PubMed","id":"34801773","evidenceCode":"ECO:0000305"},{"source":"PDB","id":"5XBZ","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"5XC2","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues2
DetailsActive site: {"evidences":[{"source":"PROSITE-ProRule","id":"PRU01352","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues2
DetailsActive site: {"evidences":[{"source":"PROSITE-ProRule","id":"PRU01352","evidenceCode":"ECO:0000255"},{"source":"PubMed","id":"24100321","evidenceCode":"ECO:0000305"},{"source":"PubMed","id":"34801773","evidenceCode":"ECO:0000305"},{"source":"PDB","id":"4K35","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"4K3A","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"5XBZ","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"5XC2","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI7
Number of Residues10
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"34801773","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"5XC2","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI8
Number of Residues6
DetailsGlycosylation: {"description":"N-linked (GlcNAc...) asparagine","evidences":[{"source":"PROSITE-ProRule","id":"PRU00498","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

239803

PDB entries from 2025-08-06

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