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4XIK

Crystal structure of NanB sialidase from streptococcus pneumoniae in complex with DMSO

Functional Information from GO Data
ChainGOidnamespacecontents
A0004308molecular_functionexo-alpha-sialidase activity
A0005737cellular_componentcytoplasm
A0005975biological_processcarbohydrate metabolic process
A0006689biological_processganglioside catabolic process
A0009313biological_processoligosaccharide catabolic process
A0016020cellular_componentmembrane
A0016787molecular_functionhydrolase activity
A0016798molecular_functionhydrolase activity, acting on glycosyl bonds
Functional Information from PDB Data
site_idAC1
Number of Residues7
Detailsbinding site for residue DMS A 701
ChainResidue
AARG245
AILE246
AARG264
AASP270
AILE326
AASP327
ATYR653

site_idAC2
Number of Residues4
Detailsbinding site for residue DMS A 702
ChainResidue
AGLN494
ATHR657
ATYR250
ATHR251

site_idAC3
Number of Residues5
Detailsbinding site for residue DMS A 703
ChainResidue
AGLY163
AASP217
AVAL220
AHOH1243
AHOH1250

site_idAC4
Number of Residues5
Detailsbinding site for residue DMS A 704
ChainResidue
AGLU194
AASP448
ALEU450
AHOH851
AHOH990

site_idAC5
Number of Residues4
Detailsbinding site for residue DMS A 705
ChainResidue
ASER530
AALA531
ASER532
AHOH980

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues11
DetailsRepeat: {"description":"BNR 1"}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues11
DetailsRepeat: {"description":"BNR 2"}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues11
DetailsRepeat: {"description":"BNR 3"}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues11
DetailsRepeat: {"description":"BNR 4"}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues1
DetailsActive site: {"description":"Proton acceptor","evidences":[{"evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues1
DetailsActive site: {"evidences":[{"evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI7
Number of Residues1
DetailsActive site: {"description":"Nucleophile","evidences":[{"evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI8
Number of Residues3
DetailsBinding site: {"evidences":[{"evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

242842

PDB entries from 2025-10-08

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