Q48847 (BGAM_LACSK) Reviewed, UniProtKB/Swiss-Prot

Names and origin

Protein names

Recommended name:
Beta-galactosidase small subunit
Short name=Beta-gal small subunit
EC=3.2.1.23

Alternative name(s):
Lactase small subunit

Gene names

Name:

lacM

Organism

Lactobacillus sakei

Taxonomic identifier

1599 [NCBI]

Taxonomic lineage

cellular organisms › Bacteria › Firmicutes › Bacilli › Lactobacillales › Lactobacillaceae › Lactobacillus

Protein attributes

Sequence length	318 AA.
Sequence status	Complete.
Protein existence	Inferred from homology

General annotation (Comments)

Catalytic activity	Hydrolysis of terminal non-reducing beta-D-galactose residues in beta-D-galactosides.
Subunit structure	Heterodimer of a large and a small subunit.
Sequence similarities	Belongs to the bacterial beta-galactosidase small subunit family.

Ontologies

Keywords
Molecular function	Glycosidase Hydrolase
Gene Ontology (GO)
Biological_process	carbohydrate metabolic process Inferred from electronic annotation. Source: InterPro
Cellular_component	beta-galactosidase complex Inferred from electronic annotation. Source: InterPro
Molecular_function	beta-galactosidase activity Inferred from electronic annotation. Source: EC carbohydrate binding Inferred from electronic annotation. Source: InterPro
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 318	318	Beta-galactosidase small subunit		PRO_0000057671

Sequences

	Sequence		Length	Mass (Da)
	Q48847 [UniParc]. Last modified November 1, 1996. Version 1. Checksum: 6F55CDB90F67FC75	FASTA	318	35,254
	10 20 30 40 50 60 MANTNKRLAV IFGDVTLGLK GPDFHYLFSY QTGGPESLRI QGKEWLYRSP KPTFWRATTD 70 80 90 100 110 120 NDRGNQFPLK SGMWLAADQF IACQSITVAI DGQTIPLPIA PENNRYSGRE TAQEVTVTYT 130 140 150 160 170 180 YQTITTPQTT VEVSYTIQAS GKIRVAVTYH GQAGLPSLPV FGLRFVMPTP ATRFIYQGLS 190 200 210 220 230 240 GETYPDRMAG GIAGEYEVTG LPVTPYLVPQ DCGVHMATDW VTIYRQAVLD NCLHEPVETG 250 260 270 280 290 300 LKFKMVDQPF AFSCLPYTAE ELENATHHSE LPAPHRTVLN LLGAVRGVGG IDSWGSDVEV 310 AYQIDATQDR HFEFEISF

References

[1]	"Two genes encoding the beta-galactosidase of Lactobacillus sake." Obst M., Meding E.R., Vogel R.F., Hammes W.P. Microbiology 141:3059-3066(1995) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA]. Strain: DSM 20017.

Cross-references

Sequence databases
EMBL GenBank DDBJ	X82287 Genomic DNA. Translation: CAA57731.1.
3D structure databases
ProteinModelPortal	Q48847.
ModBase	Search...
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Family and domain databases
Gene3D	2.70.98.10. 1 hit.
InterPro	IPR004199. B-gal_small/dom_5. IPR011013. Gal_mutarotase_SF_dom. IPR014718. Glyco_hydro-type_carb-bd_sub. [Graphical view]
Pfam	PF02929. Bgal_small_N. 1 hit. [Graphical view]
SMART	SM01038. Bgal_small_N. 1 hit. [Graphical view]
SUPFAM	SSF74650. Gal_mut_like. 1 hit.
ProtoNet	Search...

Entry information

Entry name

BGAM_LACSK

Accession

Primary (citable) accession number: Q48847

Entry history

Integrated into UniProtKB/Swiss-Prot:	December 15, 1998
Last sequence update:	November 1, 1996
Last modified:	April 3, 2013
This is version 51 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program