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LACB_STRPC
ID   LACB_STRPC              Reviewed;         171 AA.
AC   Q1JJZ6;
DT   05-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT   13-JUN-2006, sequence version 1.
DT   25-MAY-2022, entry version 76.
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};
GN   OrderedLocusNames=MGAS9429_Spy1640;
OS   Streptococcus pyogenes serotype M12 (strain MGAS9429).
OC   Bacteria; Firmicutes; Bacilli; Lactobacillales; Streptococcaceae;
OC   Streptococcus.
OX   NCBI_TaxID=370551;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=MGAS9429;
RX   PubMed=16636287; DOI=10.1073/pnas.0510279103;
RA   Beres S.B., Richter E.W., Nagiec M.J., Sumby P., Porcella S.F., DeLeo F.R.,
RA   Musser J.M.;
RT   "Molecular genetic anatomy of inter- and intraserotype variation in the
RT   human bacterial pathogen group A Streptococcus.";
RL   Proc. Natl. Acad. Sci. U.S.A. 103:7059-7064(2006).
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; CP000259; ABF32827.1; -; Genomic_DNA.
DR   RefSeq; WP_002988082.1; NC_008021.1.
DR   AlphaFoldDB; Q1JJZ6; -.
DR   SMR; Q1JJZ6; -.
DR   EnsemblBacteria; ABF32827; ABF32827; MGAS9429_Spy1640.
DR   KEGG; spk:MGAS9429_Spy1640; -.
DR   HOGENOM; CLU_091396_2_0_9; -.
DR   OMA; CCWTGTG; -.
DR   UniPathway; UPA00702; UER00714.
DR   Proteomes; UP000002433; 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; 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_1000068930"
SQ   SEQUENCE   171 AA;  18893 MW;  3253828AA1A30238 CRC64;
     MKIAVGCDHI VTYEKIAVVD YLKSQGHKVI DCGTYDNVRT HYPIFGKKVG EAVASGEAEL
     GVVICGTGVG ITNAVNKVPG IRSALVRDMT SAIYSKEELN ANVIGFGGKI IGGLLMNDII
     DAFLAAEYKP TEENKKWIEK MDSLQHASQD QNNPHFFDEF LEKWDRGEYH D
 
 
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