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A1AA01 (NAGZ_ECOK1) Reviewed, UniProtKB/Swiss-Prot

Last modified April 16, 2014. Version 53. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (3) | Third-party data text xml rdf/xml gff fasta
to top of pageNames·Attributes·General annotation·Ontologies·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order

Names and origin

Protein namesRecommended name:
Beta-hexosaminidase

EC=3.2.1.52
Alternative name(s):
Beta-N-acetylhexosaminidase
N-acetyl-beta-glucosaminidase
Gene names
Name:nagZ
Ordered Locus Names:Ecok1_09970
ORF Names:APECO1_188
OrganismEscherichia coli O1:K1 / APEC [Complete proteome] [HAMAP]
Taxonomic identifier405955 [NCBI]
Taxonomic lineageBacteriaProteobacteriaGammaproteobacteriaEnterobacterialesEnterobacteriaceaeEscherichia

Protein attributes

Sequence length341 AA.
Sequence statusComplete.
Protein existenceInferred from homology

General annotation (Comments)

Function

Plays a role in peptidoglycan recycling by cleaving the terminal beta-1,4-linked N-acetylglucosamine (GlcNAc) from peptide-linked peptidoglycan fragments, giving rise to free GlcNAc, anhydro-N-acetylmuramic acid and anhydro-N-acetylmuramic acid-linked peptides By similarity. HAMAP-Rule MF_00364

Catalytic activity

Hydrolysis of terminal non-reducing N-acetyl-D-hexosamine residues in N-acetyl-beta-D-hexosaminides. HAMAP-Rule MF_00364

Pathway

Cell wall biogenesis; peptidoglycan recycling. HAMAP-Rule MF_00364

Subcellular location

Cytoplasm By similarity HAMAP-Rule MF_00364.

Sequence similarities

Belongs to the glycosyl hydrolase 3 family. NagZ subfamily.

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Chain1 – 341341Beta-hexosaminidase HAMAP-Rule MF_00364
PRO_1000005651

Regions

Region163 – 1642Substrate binding By similarity

Sites

Active site1761Proton donor/acceptor By similarity
Active site2481Nucleophile By similarity
Binding site621Substrate By similarity
Binding site701Substrate By similarity
Binding site1331Substrate By similarity
Site1741Important for catalytic activity By similarity

Sequences

Sequence LengthMass (Da)Tools
A1AA01 [UniParc].

Last modified January 23, 2007. Version 1.
Checksum: 966760B291688F5C

FASTA34137,549
        10         20         30         40         50         60 
MGPVMLDVEG YELDAEEREI LAHPLVGGLI LFTRNYHDPA QLRELVCQIR AASRNHLVVA 

        70         80         90        100        110        120 
VDQEGGRVQR FREGFTRLPA AQSFAALLGM EEGGKLAQEA GWLMASEMIA MDIDISFAPV 

       130        140        150        160        170        180 
LDVGHISAAI GERSYHADPQ KALAIASRFI DGMHEAGMKT TGKHFPGHGA VTADSHKETP 

       190        200        210        220        230        240 
CDPRPQAEIR AKDMSVFSSL IRENKLDAIM PAHVIYSDVD PRPASGSPYW LKTVLRQELG 

       250        260        270        280        290        300 
FDGVIFSDDL SMEGAAIMGS YAERGQASLD AGCDMILVCN NRKGAVSVLD NLSPIKAERV 

       310        320        330        340 
TRLYHKGSFS RQELMDSARW KAISTRLNQL HERWQEEKAG H 

« Hide

References

[1]"The genome sequence of avian pathogenic Escherichia coli strain O1:K1:H7 shares strong similarities with human extraintestinal pathogenic E. coli genomes."
Johnson T.J., Kariyawasam S., Wannemuehler Y., Mangiamele P., Johnson S.J., Doetkott C., Skyberg J.A., Lynne A.M., Johnson J.R., Nolan L.K.
J. Bacteriol. 189:3228-3236(2007) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
CP000468 Genomic DNA. Translation: ABJ00491.1.
RefSeqYP_852205.1. NC_008563.1.

3D structure databases

ProteinModelPortalA1AA01.
SMRA1AA01. Positions 1-324.
ModBaseSearch...
MobiDBSearch...

Protein-protein interaction databases

STRING405955.APECO1_188.

Protein family/group databases

CAZyGH3. Glycoside Hydrolase Family 3.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaABJ00491; ABJ00491; APECO1_188.
GeneID4493211.
KEGGecv:APECO1_188.
PATRIC18213650. VBIEscCol127180_1111.

Organism-specific databases

CMRSearch...

Phylogenomic databases

eggNOGCOG1472.
HOGENOMHOG000248526.
KOK01207.
OMAAGFSSYW.
OrthoDBEOG6BCT06.
ProtClustDBPRK05337.

Enzyme and pathway databases

UniPathwayUPA00544.

Family and domain databases

Gene3D3.20.20.300. 1 hit.
HAMAPMF_00364. NagZ.
InterProIPR022956. Beta_hexosaminidase_bac.
IPR019800. Glyco_hydro_3_AS.
IPR001764. Glyco_hydro_3_N.
IPR017853. Glycoside_hydrolase_SF.
[Graphical view]
PfamPF00933. Glyco_hydro_3. 1 hit.
[Graphical view]
SUPFAMSSF51445. SSF51445. 1 hit.
PROSITEPS00775. GLYCOSYL_HYDROL_F3. 1 hit.
[Graphical view]
ProtoNetSearch...

Entry information

Entry nameNAGZ_ECOK1
AccessionPrimary (citable) accession number: A1AA01
Entry history
Integrated into UniProtKB/Swiss-Prot: January 15, 2008
Last sequence update: January 23, 2007
Last modified: April 16, 2014
This is version 53 of the entry and version 1 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Relevant documents

SIMILARITY comments

Index of protein domains and families

PATHWAY comments

Index of metabolic and biosynthesis pathways

Glycosyl hydrolases

Classification of glycosyl hydrolase families and list of entries