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B7NKH2 (NAGZ_ECO7I) Reviewed, UniProtKB/Swiss-Prot

Last modified April 16, 2014. Version 35. 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:ECIAI39_2053
OrganismEscherichia coli O7:K1 (strain IAI39 / ExPEC) [Complete proteome] [HAMAP]
Taxonomic identifier585057 [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_1000121055

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
B7NKH2 [UniParc].

Last modified March 24, 2009. Version 1.
Checksum: 33E387D36C97B669

FASTA34137,573
        10         20         30         40         50         60 
MGPVMLDVEG YELDAEEREI LAHPLVGGLI LFTRNYHDPA QLRELVRQIR AASRNHLVVA 

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

       130        140        150        160        170        180 
LDVGHISAAI GERSYHADPE 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 KAISARLNQL HERWQEEKAG H 

« Hide

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
CU928164 Genomic DNA. Translation: CAR18180.1.
RefSeqYP_002408020.1. NC_011750.1.

3D structure databases

ProteinModelPortalB7NKH2.
SMRB7NKH2. Positions 1-325.
ModBaseSearch...
MobiDBSearch...

Protein-protein interaction databases

STRING585057.ECIAI39_2053.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaCAR18180; CAR18180; ECIAI39_2053.
GeneID7153455.
KEGGect:ECIAI39_2053.
PATRIC18332812. VBIEscCol51957_2133.

Organism-specific databases

CMRSearch...

Phylogenomic databases

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

Enzyme and pathway databases

BioCycECOL585057:GJ8I-2121-MONOMER.
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_ECO7I
AccessionPrimary (citable) accession number: B7NKH2
Entry history
Integrated into UniProtKB/Swiss-Prot: April 14, 2009
Last sequence update: March 24, 2009
Last modified: April 16, 2014
This is version 35 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