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Protein

Beta-galactosidase

Gene
N/A
Organism
Hordeum vulgare (Barley)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Experimental evidence at protein leveli

Functioni

Involved in cell wall degradation. Degrades polysaccharides containing beta-(1-->4)-linked galactans, acting as an exo-(1-->4)-beta-D-galactanase (By similarity).By similarity

Catalytic activityi

Hydrolysis of terminal non-reducing beta-D-galactose residues in beta-D-galactosides.By similarity

GO - Molecular functioni

  • beta-galactosidase activity Source: UniProtKB
  • hydrolase activity, acting on glycosyl bonds Source: UniProtKB

GO - Biological processi

Complete GO annotation...

Keywords - Molecular functioni

Glycosidase, Hydrolase

Enzyme and pathway databases

BRENDAi3.2.1.23. 2687.

Names & Taxonomyi

Protein namesi
Recommended name:
Beta-galactosidase (EC:3.2.1.23)
Alternative name(s):
Acid beta-galactosidase
Short name:
Lactase
Exo-(1-->4)-beta-D-galactanase
Cleaved into the following 2 chains:
OrganismiHordeum vulgare (Barley)
Taxonomic identifieri4513 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaLiliopsidaPoalesPoaceaeBOP cladePooideaeTriticodaeTriticeaeHordeinaeHordeum

Organism-specific databases

GrameneiP83252.

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – ›28›28Beta-galactosidase large subunit1 PublicationPRO_0000271912Add
BLAST
Chaini29 – ›38›10Beta-galactosidase small subunit1 PublicationPRO_0000271913

Post-translational modificationi

The small subunit is N-glycosylated.1 Publication

Keywords - PTMi

Glycoprotein

Interactioni

Subunit structurei

Heterodimer of a large and a small subunit.1 Publication

Family & Domainsi

Sequence similaritiesi

Belongs to the glycosyl hydrolase 35 family.Sequence Analysis

Family and domain databases

Gene3Di3.20.20.80. 1 hit.
InterProiIPR013781. Glyco_hydro_catalytic_dom.
[Graphical view]

Sequencei

Sequence statusi: Fragments.

Sequence processingi: The displayed sequence is further processed into a mature form.

P83252-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30 
TGVTYDHRAL VIDGXXXVLV SGSIHYPRAA SSWYAVET
Length:38
Mass (Da):4,126
Last modified:January 9, 2007 - v2
Checksum:i7138F328FA3EFFDE
GO

Experimental Info

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Non-adjacent residuesi28 – 2921 Publication
Non-terminal residuei38 – 3811 Publication

Cross-referencesi

3D structure databases

ModBaseiSearch...
MobiDBiSearch...

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Organism-specific databases

GrameneiP83252.

Enzyme and pathway databases

BRENDAi3.2.1.23. 2687.

Family and domain databases

Gene3Di3.20.20.80. 1 hit.
InterProiIPR013781. Glyco_hydro_catalytic_dom.
[Graphical view]
ProtoNetiSearch...

Publicationsi

  1. "Barley beta-galactosidase: structure, function, heterogeneity, and gene origin."
    Triantafillidou D., Georgatsos J.G.
    J. Protein Chem. 20:551-562(2001) [PubMed] [Europe PMC] [Abstract]
    Cited for: PROTEIN SEQUENCE, SUBUNIT, GLYCOSYLATION.
    Strain: cv. Sofia1 Publication.
    Tissue: Seed1 Publication.

Entry informationi

Entry nameiBGAL_HORVU
AccessioniPrimary (citable) accession number: P83252
Entry historyi
Integrated into UniProtKB/Swiss-Prot: January 9, 2007
Last sequence update: January 9, 2007
Last modified: July 22, 2015
This is version 45 of the entry and version 2 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

Miscellaneousi

Miscellaneous

There are three forms of the large subunit which have the same sequence but differ in charge. There are four forms of the small subunit which have the same sequence but differ in charge.1 Publication

Keywords - Technical termi

Direct protein sequencing

Documents

  1. Glycosyl hydrolases
    Classification of glycosyl hydrolase families and list of entries
  2. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into Uniref entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.