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4PBG

6-PHOSPHO-BETA-GALACTOSIDASE FORM-CST

Functional Information from GO Data
ChainGOidnamespacecontents
A0004553molecular_functionhydrolase activity, hydrolyzing O-glycosyl compounds
A0005829cellular_componentcytosol
A0005975biological_processcarbohydrate metabolic process
A0005990biological_processlactose catabolic process
A0008422molecular_functionbeta-glucosidase activity
A0016052biological_processcarbohydrate catabolic process
A0016787molecular_functionhydrolase activity
A0016798molecular_functionhydrolase activity, acting on glycosyl bonds
A0019512biological_processlactose catabolic process via tagatose-6-phosphate
A0033920molecular_function6-phospho-beta-galactosidase activity
B0004553molecular_functionhydrolase activity, hydrolyzing O-glycosyl compounds
B0005829cellular_componentcytosol
B0005975biological_processcarbohydrate metabolic process
B0005990biological_processlactose catabolic process
B0008422molecular_functionbeta-glucosidase activity
B0016052biological_processcarbohydrate catabolic process
B0016787molecular_functionhydrolase activity
B0016798molecular_functionhydrolase activity, acting on glycosyl bonds
B0019512biological_processlactose catabolic process via tagatose-6-phosphate
B0033920molecular_function6-phospho-beta-galactosidase activity
Functional Information from PDB Data
site_idPHA
Number of Residues3
DetailsPHOSPHATE BINDING SITE.
ChainResidue
ASER428
ALYS435
ATYR437

site_idPHB
Number of Residues3
DetailsPHOSPHATE BINDING SITE.
ChainResidue
BSER428
BLYS435
BTYR437

Functional Information from PROSITE/UniProt
site_idPS00653
Number of Residues15
DetailsGLYCOSYL_HYDROL_F1_2 Glycosyl hydrolases family 1 N-terminal signature. FiFGgAtAAYQaEgA
ChainResidueDetails
APHE9-ALA23

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues2
DetailsActive site: {"description":"Proton donor","evidences":[{"source":"HAMAP-Rule","id":"MF_01574","evidenceCode":"ECO:0000255"},{"source":"PubMed","id":"8535789","evidenceCode":"ECO:0000305"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues2
DetailsActive site: {"description":"Nucleophile","evidences":[{"source":"HAMAP-Rule","id":"MF_01574","evidenceCode":"ECO:0000255"},{"source":"PubMed","id":"8535789","evidenceCode":"ECO:0000305"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues18
DetailsBinding site: {"evidences":[{"source":"HAMAP-Rule","id":"MF_01574","evidenceCode":"ECO:0000255"},{"source":"PubMed","id":"9223646","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"4PBG","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

Catalytic Information from CSA
site_idCSA1
Number of Residues2
DetailsAnnotated By Reference To The Literature 1pbg
ChainResidueDetails
ACYS375
AGLU160

site_idCSA2
Number of Residues2
DetailsAnnotated By Reference To The Literature 1pbg
ChainResidueDetails
BCYS375
BGLU160

site_idMCSA1
Number of Residues2
DetailsM-CSA 877
ChainResidueDetails
AGLU160proton shuttle (general acid/base)
ACYS375covalent catalysis

site_idMCSA2
Number of Residues2
DetailsM-CSA 877
ChainResidueDetails
BGLU160proton shuttle (general acid/base)
BCYS375covalent catalysis

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PDB entries from 2025-12-17

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