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LACB_STRSV
ID   LACB_STRSV              Reviewed;         171 AA.
AC   A3CPH6;
DT   05-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT   20-MAR-2007, sequence version 1.
DT   25-MAY-2022, entry version 84.
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=SSA_1698;
OS   Streptococcus sanguinis (strain SK36).
OC   Bacteria; Firmicutes; Bacilli; Lactobacillales; Streptococcaceae;
OC   Streptococcus.
OX   NCBI_TaxID=388919;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=SK36;
RX   PubMed=17277061; DOI=10.1128/jb.01808-06;
RA   Xu P., Alves J.M., Kitten T., Brown A., Chen Z., Ozaki L.S., Manque P.,
RA   Ge X., Serrano M.G., Puiu D., Hendricks S., Wang Y., Chaplin M.D., Akan D.,
RA   Paik S., Peterson D.L., Macrina F.L., Buck G.A.;
RT   "Genome of the opportunistic pathogen Streptococcus sanguinis.";
RL   J. Bacteriol. 189:3166-3175(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; CP000387; ABN45081.1; -; Genomic_DNA.
DR   RefSeq; WP_011837291.1; NC_009009.1.
DR   RefSeq; YP_001035631.1; NC_009009.1.
DR   AlphaFoldDB; A3CPH6; -.
DR   SMR; A3CPH6; -.
DR   STRING; 388919.SSA_1698; -.
DR   EnsemblBacteria; ABN45081; ABN45081; SSA_1698.
DR   KEGG; ssa:SSA_1698; -.
DR   PATRIC; fig|388919.9.peg.1610; -.
DR   eggNOG; COG0698; Bacteria.
DR   HOGENOM; CLU_091396_2_0_9; -.
DR   OMA; ETHHANQ; -.
DR   OrthoDB; 1346802at2; -.
DR   UniPathway; UPA00702; UER00714.
DR   Proteomes; UP000002148; 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; Reference proteome.
FT   CHAIN           1..171
FT                   /note="Galactose-6-phosphate isomerase subunit LacB"
FT                   /id="PRO_1000068933"
SQ   SEQUENCE   171 AA;  18918 MW;  1AFA615FA010FF00 CRC64;
     MKIAIGCDHI VTNEKMAVSD FLKSKGYEVL DFGTYDHTRT HYPIFGKKVG EAVVSGQADL
     GVCICGTGVG INNAVNKVPG VRSALVRDMT SALYAKEELN ANVIGFGGKI TGELLICDII
     EAFIHAEYKP TEENKKLIAK IEHVETHNAH QADDNFFTEF LEKWDRGEYH D
 
 
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