ID   LACA_STAA8              Reviewed;         142 AA.
AC   Q2G2R4; P26594;
DT   25-JUL-2006, integrated into UniProtKB/Swiss-Prot.
DT   21-MAR-2006, sequence version 1.
DT   25-MAY-2022, entry version 87.
DE   RecName: Full=Galactose-6-phosphate isomerase subunit LacA {ECO:0000255|HAMAP-Rule:MF_01555};
DE            EC=5.3.1.26 {ECO:0000255|HAMAP-Rule:MF_01555};
GN   Name=lacA {ECO:0000255|HAMAP-Rule:MF_01555};
GN   OrderedLocusNames=SAOUHSC_02455;
OS   Staphylococcus aureus (strain NCTC 8325 / PS 47).
OC   Bacteria; Firmicutes; Bacilli; Bacillales; Staphylococcaceae;
OC   Staphylococcus.
OX   NCBI_TaxID=93061;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=NCTC 8325 / PS 47;
RA   Gillaspy A.F., Worrell V., Orvis J., Roe B.A., Dyer D.W., Iandolo J.J.;
RT   "The Staphylococcus aureus NCTC 8325 genome.";
RL   (In) Fischetti V., Novick R., Ferretti J., Portnoy D., Rood J. (eds.);
RL   Gram positive pathogens, 2nd edition, pp.381-412, ASM Press, Washington
RL   D.C. (2006).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA] OF 1-63.
RX   PubMed=2163387; DOI=10.1128/jb.172.7.3804-3812.1990;
RA   Oskouian B., Stewart G.C.;
RT   "Repression and catabolite repression of the lactose operon of
RT   Staphylococcus aureus.";
RL   J. Bacteriol. 172:3804-3812(1990).
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_01555};
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_01555}.
CC   -!- SUBUNIT: Heteromultimeric protein consisting of LacA and LacB.
CC       {ECO:0000255|HAMAP-Rule:MF_01555}.
CC   -!- SIMILARITY: Belongs to the LacAB/RpiB family. {ECO:0000255|HAMAP-
CC       Rule:MF_01555}.
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DR   EMBL; CP000253; ABD31475.1; -; Genomic_DNA.
DR   EMBL; M32103; AAA67855.1; -; Genomic_DNA.
DR   PIR; A38158; A38158.
DR   RefSeq; WP_000974608.1; NZ_LS483365.1.
DR   RefSeq; YP_500922.1; NC_007795.1.
DR   AlphaFoldDB; Q2G2R4; -.
DR   SMR; Q2G2R4; -.
DR   STRING; 1280.SAXN108_2448; -.
DR   EnsemblBacteria; ABD31475; ABD31475; SAOUHSC_02455.
DR   GeneID; 3919018; -.
DR   GeneID; 66840413; -.
DR   KEGG; sao:SAOUHSC_02455; -.
DR   PATRIC; fig|93061.5.peg.2214; -.
DR   eggNOG; COG0698; Bacteria.
DR   HOGENOM; CLU_091396_4_2_9; -.
DR   OMA; AMHNGAK; -.
DR   UniPathway; UPA00702; UER00714.
DR   PRO; PR:Q2G2R4; -.
DR   Proteomes; UP000008816; Chromosome.
DR   GO; GO:0050044; F:galactose-6-phosphate isomerase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0016853; F:isomerase activity; IBA:GO_Central.
DR   GO; GO:0004751; F:ribose-5-phosphate isomerase activity; IBA:GO_Central.
DR   GO; GO:0019316; P:D-allose catabolic process; IBA:GO_Central.
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   GO; GO:0009052; P:pentose-phosphate shunt, non-oxidative branch; IBA:GO_Central.
DR   Gene3D; 3.40.1400.10; -; 1.
DR   HAMAP; MF_01555; LacA; 1.
DR   InterPro; IPR004783; LacA.
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; TIGR01118; lacA; 1.
DR   TIGRFAMs; TIGR00689; rpiB_lacA_lacB; 1.
PE   3: Inferred from homology;
KW   Isomerase; Lactose metabolism; Reference proteome.
FT   CHAIN           1..142
FT                   /note="Galactose-6-phosphate isomerase subunit LacA"
FT                   /id="PRO_0000247669"
SQ   SEQUENCE   142 AA;  15395 MW;  A52C4A7DBF30BE19 CRC64;
     MAIIIGSDEA GKRLKEVIKS YLLDNKYDVV DVTEGQEVDF VDATLAVAKD VQSQEGNLGI
     VIDAFGAGSF MVATKIKGMI AAEVSDERSG YMTRGHNNSR MITMGSEIVG DTLAKNVVKG
     FVEGKYDGGR HQIRVDMLNK MC