LACB_STREM
ID LACB_STREM Reviewed; 171 AA.
AC B4U1F9;
DT 14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT 23-SEP-2008, sequence version 1.
DT 25-MAY-2022, entry version 64.
DE RecName: Full=Galactose-6-phosphate isomerase subunit LacB {ECO:0000255|HAMAP-Rule:MF_01556};
DE EC=5.3.1.26 {ECO:0000255|HAMAP-Rule:MF_01556};
GN Name=lacB {ECO:0000255|HAMAP-Rule:MF_01556}; OrderedLocusNames=Sez_0454;
OS Streptococcus equi subsp. zooepidemicus (strain MGCS10565).
OC Bacteria; Firmicutes; Bacilli; Lactobacillales; Streptococcaceae;
OC Streptococcus.
OX NCBI_TaxID=552526;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=MGCS10565;
RX PubMed=18716664; DOI=10.1371/journal.pone.0003026;
RA Beres S.B., Sesso R., Pinto S.W.L., Hoe N.P., Porcella S.F., Deleo F.R.,
RA Musser J.M.;
RT "Genome sequence of a lancefield group C Streptococcus zooepidemicus strain
RT causing epidemic nephritis: new information about an old disease.";
RL PLoS ONE 3:E3026-E3026(2008).
CC -!- CATALYTIC ACTIVITY:
CC Reaction=aldehydo-D-galactose 6-phosphate = keto-D-tagatose 6-
CC phosphate; Xref=Rhea:RHEA:13033, ChEBI:CHEBI:58255,
CC ChEBI:CHEBI:134283; EC=5.3.1.26; Evidence={ECO:0000255|HAMAP-
CC Rule:MF_01556};
CC -!- PATHWAY: Carbohydrate metabolism; D-galactose 6-phosphate degradation;
CC D-tagatose 6-phosphate from D-galactose 6-phosphate: step 1/1.
CC {ECO:0000255|HAMAP-Rule:MF_01556}.
CC -!- SUBUNIT: Heteromultimeric protein consisting of LacA and LacB.
CC {ECO:0000255|HAMAP-Rule:MF_01556}.
CC -!- SIMILARITY: Belongs to the LacAB/RpiB family. {ECO:0000255|HAMAP-
CC Rule:MF_01556}.
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DR EMBL; CP001129; ACG61826.1; -; Genomic_DNA.
DR RefSeq; WP_012515102.1; NC_011134.1.
DR AlphaFoldDB; B4U1F9; -.
DR SMR; B4U1F9; -.
DR EnsemblBacteria; ACG61826; ACG61826; Sez_0454.
DR KEGG; sez:Sez_0454; -.
DR HOGENOM; CLU_091396_2_0_9; -.
DR OMA; ERAIMIC; -.
DR UniPathway; UPA00702; UER00714.
DR Proteomes; UP000001873; Chromosome.
DR GO; GO:0050044; F:galactose-6-phosphate isomerase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0019388; P:galactose catabolic process; IEA:UniProtKB-UniPathway.
DR GO; GO:0019512; P:lactose catabolic process via tagatose-6-phosphate; IEA:UniProtKB-UniRule.
DR Gene3D; 3.40.1400.10; -; 1.
DR HAMAP; MF_01556; LacB; 1.
DR InterPro; IPR004784; LacB.
DR InterPro; IPR003500; RpiB_LacA_LacB.
DR InterPro; IPR036569; RpiB_LacA_LacB_sf.
DR PANTHER; PTHR30345; PTHR30345; 1.
DR Pfam; PF02502; LacAB_rpiB; 1.
DR PIRSF; PIRSF005384; RpiB_LacA_B; 1.
DR SUPFAM; SSF89623; SSF89623; 1.
DR TIGRFAMs; TIGR01119; lacB; 1.
DR TIGRFAMs; TIGR00689; rpiB_lacA_lacB; 1.
PE 3: Inferred from homology;
KW Isomerase; Lactose metabolism.
FT CHAIN 1..171
FT /note="Galactose-6-phosphate isomerase subunit LacB"
FT /id="PRO_1000147085"
SQ SEQUENCE 171 AA; 18952 MW; 017895710D6CA78D CRC64;
MKIAIGCDHI VTNEKMAVSD FLKSKGYEVI DCGTYDHTRT HYPIFGKRVG EAVANGRADL
GVCICGTGVG INNAVNKVSG IRSALVRDMT TALYAKEELN ANVIGFGGKI TGELLMCDII
DAFIKADYRE TDDNKKLLAK IAHLETQHVN QEDPDFFNEF LDKWDRGDYQ D