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LACB_STRPG
ID   LACB_STRPG              Reviewed;         171 AA.
AC   A2RD12;
DT   05-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT   06-MAR-2007, sequence version 1.
DT   25-MAY-2022, entry version 74.
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=SpyM50393;
OS   Streptococcus pyogenes serotype M5 (strain Manfredo).
OC   Bacteria; Firmicutes; Bacilli; Lactobacillales; Streptococcaceae;
OC   Streptococcus.
OX   NCBI_TaxID=160491;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Manfredo;
RX   PubMed=17012393; DOI=10.1128/jb.01227-06;
RA   Holden M.T.G., Scott A., Cherevach I., Chillingworth T., Churcher C.,
RA   Cronin A., Dowd L., Feltwell T., Hamlin N., Holroyd S., Jagels K.,
RA   Moule S., Mungall K., Quail M.A., Price C., Rabbinowitsch E., Sharp S.,
RA   Skelton J., Whitehead S., Barrell B.G., Kehoe M., Parkhill J.;
RT   "Complete genome of acute rheumatic fever-associated serotype M5
RT   Streptococcus pyogenes strain Manfredo.";
RL   J. Bacteriol. 189:1473-1477(2007).
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; AM295007; CAM29736.1; -; Genomic_DNA.
DR   RefSeq; WP_002994294.1; NC_009332.1.
DR   AlphaFoldDB; A2RD12; -.
DR   SMR; A2RD12; -.
DR   KEGG; spf:SpyM50393; -.
DR   HOGENOM; CLU_091396_2_0_9; -.
DR   OMA; ETHHANQ; -.
DR   UniPathway; UPA00702; UER00714.
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_1000068931"
SQ   SEQUENCE   171 AA;  18940 MW;  8D0D703FE53298F8 CRC64;
     MKIAIGCDHI VTNEKMAVSD FLKSKGYDVI DCGTYDHTRT HYPIFGKKVG EAVVNGQADL
     GVCICGTGVG INNAVNKVPG IRSALVRDMT TALYAKEELN ANVIGFGGKI TGELLMCDII
     DAFIKAEYKE TEENKKLIAK IAHLETHHAN QEDPDFFTEF LEKWDRGEYH D
 
 
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