Reviewed, UniProtKB/Swiss-Prot Q1J4Q7 (LACG_STRPF)

Names and origin

Protein names

Recommended name:
    6-phospho-beta-galactosidase
    EC=3.2.1.85
Alternative name(s):
    Beta-D-phosphogalactoside galactohydrolase
      Short name=PGALase
    P-beta-Gal
      Short name=PBG

Gene names

Name:	lacG
Ordered Locus Names:	MGAS10750_Spy1729

Organism

Streptococcus pyogenes serotype M4 (strain MGAS10750) [Complete proteome] [HAMAP]

Taxonomic identifier

370554 [NCBI]

Taxonomic lineage

Bacteria › Firmicutes › Lactobacillales › Streptococcaceae › Streptococcus

Protein attributes

Sequence length	468 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is not processed.
Protein existence	Inferred from homology.

General annotation (Comments)

Catalytic activity	A 6-phospho-beta-D-galactoside + H2O = 6-phospho-D-galactose + an alcohol. HAMAP MF_01574
Pathway	Carbohydrate metabolism; lactose degradation; D-galactose 6-phosphate and beta-D-glucose from lactose 6-phosphate: step 1/1. HAMAP MF_01574
Sequence similarities	Belongs to the glycosyl hydrolase 1 family.

Ontologies

Keywords
Molecular function	Glycosidase Hydrolase
Technical term	Complete proteome
Gene Ontology (GO)
Biological process	lactose catabolic process via tagatose-6-phosphate Inferred from electronic annotation. Source: InterPro
Molecular function	6-phospho-beta-galactosidase activity Inferred from electronic annotation. Source: EC cation binding Inferred from electronic annotation. Source: InterPro galactosidase activity Inferred from electronic annotation. Source: HAMAP
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 468	468	6-phospho-beta-galactosidase HAMAP MF_01574		PRO_0000260741
Sites
	Active site	160	1	Proton donor By similarity
	Active site	375	1	Nucleophile By similarity

Sequences

	Sequence		Length	Mass (Da)
	Q1J4Q7-1 [UniParc]. Last modified November 28, 2006. Version 2. Checksum: 251F1703B3385D9A	FASTA	468	53,787
	10 20 30 40 50 60 MTKTLPKDFI FGGATAAYQA EGATHTDGKG PVAWDKYLED NYWYTAEPAS DFYNRYPVDL 70 80 90 100 110 120 KLSEEFGVNG IRISIAWSRI FPTGKGDVNP KGVEYYHNLF AECHKRHVEP FVTLHHFDTP 130 140 150 160 170 180 EALHSDGDFL NRENIEHFVN YAEFCFKEFS EVNYWTTFNE IGPIGDGQYL VGKFPPGIQY 190 200 210 220 230 240 DLAKVFQSHH NMMVSHARAV KLFKDGGYSG EIGVVHALPT KYPFDANNPD DVRAAELEDI 250 260 270 280 290 300 IHNKFILDAT YLGKYSDKTM EGVNHILEVN GGELDLREED FVALDAAKDL NDFLGINYYM 310 320 330 340 350 360 SDWMQAFDGE TEIIHNGKGE KGSSKYQIKG VGRRKAPVDV PKTDWDWIIF PQGLYDQIMR 370 380 390 400 410 420 VKADYPNYKK IYITENGLGY KDEFVDNTVY DDGRIDYVKK HLEVISDAIS DGANVKGYFM 430 440 450 460 WSLMDVFSWS NGYEKLYGLF YVDFETQERY PKKSAYWYKK VAETQVIE

References

[1]

"Molecular genetic anatomy of inter- and intraserotype variation in the human bacterial pathogen group A Streptococcus." Beres S.B., Richter E.W., Nagiec M.J., Sumby P., Porcella S.F., DeLeo F.R., Musser J.M. Proc. Natl. Acad. Sci. U.S.A. 103:7059-7064(2006) [PubMed: 16636287] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].

Cross-references

Sequence databases
EMBLGenBankDDBJ	CP000262 Genomic DNA. Translation: ABF38679.1. Different initiation.
RefSeq	YP_603223.2.
3D structure databases
SMR	Q1J4Q7. Positions 1-468.
ModBase	Search...
Protein-protein interaction databases
STRING	Q1J4Q7.
Protein family/group databases
CAZy	GH1. Glycoside Hydrolase Family 1.
Genome annotation databases
GeneID	4067196.
GenomeReviews	Gene locus lacG in contig CP000262_GR.
KEGG	spi:MGAS10750_Spy1729.
Organism-specific databases
CMR	Search...
Phylogenomic databases
HOGENOM	Q1J4Q7.
Enzyme and pathway databases
BioCyc	SPYO370554:MGAS10750_SPY1729-MON.
Family and domain databases
HAMAP	MF_01574. [Tree]
InterPro	IPR001360. Glyco_hydro_1. IPR018120. Glyco_hydro_1_AS. IPR013781. Glyco_hydro_sg_catalytic. IPR005928. LacG. [Graphical view]
Gene3D	G3DSA:3.20.20.80. Glyco_hydro_cat. 1 hit.
PANTHER	PTHR10353. Glyco_hydro_1. 1 hit.
Pfam	PF00232. Glyco_hydro_1. 1 hit. [Graphical view]
PRINTS	PR00131. GLHYDRLASE1.
TIGRFAMs	TIGR01233. lacG. 1 hit.
PROSITE	PS00572. GLYCOSYL_HYDROL_F1_1. 1 hit. PS00653. GLYCOSYL_HYDROL_F1_2. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

LACG_STRPF

Accession

Primary (citable) accession number: Q1J4Q7

Entry history

Integrated into UniProtKB/Swiss-Prot:	November 28, 2006
Last sequence update:	November 28, 2006
Last modified:	September 1, 2009
This is version 27 of the entry and version 2 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

HAMAP (High-quality Automated and Manual Annotation of microbial Proteomes)