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1XXN

Crystal structure of a mesophilic xylanase A from Bacillus subtilis 1A1

Functional Information from GO Data
ChainGOidnamespacecontents
A0000272biological_processpolysaccharide catabolic process
A0004553molecular_functionhydrolase activity, hydrolyzing O-glycosyl compounds
A0005975biological_processcarbohydrate metabolic process
A0016787molecular_functionhydrolase activity
A0016798molecular_functionhydrolase activity, acting on glycosyl bonds
A0031176molecular_functionendo-1,4-beta-xylanase activity
A0045493biological_processxylan catabolic process
Functional Information from PDB Data
site_idAC1
Number of Residues11
DetailsBINDING SITE FOR RESIDUE SRT A 201
ChainResidue
APHE48
AHOH343
AHOH344
ASER74
AGLY102
AGLY103
ATHR104
AGLN133
ASER134
AHOH240
AHOH342

Functional Information from PROSITE/UniProt
site_idPS00776
Number of Residues11
DetailsGH11_1 Glycosyl hydrolases family 11 (GH11) active site signature 1. PLiEYYVVDsW
ChainResidueDetails
APRO75-TRP85

site_idPS00777
Number of Residues12
DetailsGH11_2 Glycosyl hydrolases family 11 (GH11) active site signature 2. MatEGYQSSGsS
ChainResidueDetails
AMET169-SER180

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues184
DetailsDomain: {"description":"GH11","evidences":[{"source":"PROSITE-ProRule","id":"PRU01097","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues1
DetailsActive site: {"description":"Nucleophile","evidences":[{"source":"PROSITE-ProRule","id":"PRU10062","evidenceCode":"ECO:0000255"},{"source":"PubMed","id":"7911679","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues1
DetailsActive site: {"description":"Proton donor","evidences":[{"source":"PROSITE-ProRule","id":"PRU10063","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

Catalytic Information from CSA
site_idCSA1
Number of Residues2
DetailsAnnotated By Reference To The Literature 1bvv
ChainResidueDetails
AGLU172
AGLU78

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PDB entries from 2026-01-28

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