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1FSU

Crystal Structure of 4-Sulfatase (human)

Functional Information from GO Data
ChainGOidnamespacecontents
A0003943molecular_functionN-acetylgalactosamine-4-sulfatase activity
A0004065molecular_functionarylsulfatase activity
A0005576cellular_componentextracellular region
A0005764cellular_componentlysosome
A0005788cellular_componentendoplasmic reticulum lumen
A0006914biological_processautophagy
A0007040biological_processlysosome organization
A0007041biological_processlysosomal transport
A0007584biological_processresponse to nutrient
A0008484molecular_functionsulfuric ester hydrolase activity
A0009268biological_processresponse to pH
A0009986cellular_componentcell surface
A0010632biological_processregulation of epithelial cell migration
A0010976biological_processpositive regulation of neuron projection development
A0016787molecular_functionhydrolase activity
A0030207biological_processchondroitin sulfate proteoglycan catabolic process
A0035578cellular_componentazurophil granule lumen
A0043202cellular_componentlysosomal lumen
A0043627biological_processresponse to estrogen
A0046872molecular_functionmetal ion binding
A0051597biological_processresponse to methylmercury
A0061580biological_processcolon epithelial cell migration
A0070062cellular_componentextracellular exosome
A1904813cellular_componentficolin-1-rich granule lumen
Functional Information from PDB Data
site_idMEB
Number of Residues5
DetailsTHIS IS THE METAL BINDING SITE. THE METAL WAS IDENTIFIED AS CALCIUM BY ITS PEAK HEIGHT IN DIFFERENCE ELECTRON DENSITY MAPS, BY SUCCESSIVE TEMPERATURE FACTOR REFINEMENT AND BY THE NATURE AND GEOMETRY OF THE COORDINATING LIGANDS.
ChainResidue
AASP53
AASP54
AALS91
AASP300
AASN301

site_idSAL
Number of Residues6
DetailsTHESE RESIDUES AND THE METAL ION STABILIZE THE SULFATE ESTER RESIDUE 91. TOGETHER WITH THE METAL BINDING SITE THIS FORMS THE CENTER OF THE CATALYTIC ACTIVE SITE.
ChainResidue
AARG95
AHIS147
AALS91
AHIS242
ALYS318
ALYS145

Functional Information from PROSITE/UniProt
site_idPS00149
Number of Residues11
DetailsSULFATASE_2 Sulfatases signature 2. GYtThmVGK.WH
ChainResidueDetails
AGLY137-HIS147

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues1
DetailsActive site: {"description":"Nucleophile","evidences":[{"source":"PubMed","id":"7628016","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues1
DetailsActive site: {}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues4
DetailsBinding site: {}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues1
DetailsBinding site: {"description":"via 3-oxoalanine","evidences":[{"source":"PubMed","id":"7628016","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues3
DetailsBinding site: {"evidences":[{"evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues1
DetailsModified residue: {"description":"3-oxoalanine (Cys)","evidences":[{"source":"PubMed","id":"7628016","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI7
Number of Residues2
DetailsGlycosylation: {"description":"N-linked (GlcNAc...) asparagine","evidences":[{"evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI8
Number of Residues2
DetailsGlycosylation: {"description":"N-linked (GlcNAc...) asparagine"}
ChainResidueDetails

site_idSWS_FT_FI9
Number of Residues1
DetailsGlycosylation: {"description":"N-linked (GlcNAc...) asparagine","evidences":[{"evidenceCode":"ECO:0000305"}]}
ChainResidueDetails

site_idSWS_FT_FI10
Number of Residues1
DetailsGlycosylation: {"description":"N-linked (GlcNAc...) asparagine","evidences":[{"source":"PubMed","id":"19159218","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

Catalytic Information from CSA
site_idCSA1
Number of Residues6
DetailsAnnotated By Reference To The Literature 1hdh
ChainResidueDetails
AHIS242
ALYS145
AARG95
AASP300
ALYS318
AHIS147

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PDB entries from 2025-10-15

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