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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
 
 
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