ID LACB_ENTFA Reviewed; 171 AA.
AC Q833U4;
DT 10-JAN-2006, integrated into UniProtKB/Swiss-Prot.
DT 01-JUN-2003, sequence version 1.
DT 27-MAR-2024, entry version 95.
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=EF_1834;
OS Enterococcus faecalis (strain ATCC 700802 / V583).
OC Bacteria; Bacillota; Bacilli; Lactobacillales; Enterococcaceae;
OC Enterococcus.
OX NCBI_TaxID=226185;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 700802 / V583;
RX PubMed=12663927; DOI=10.1126/science.1080613;
RA Paulsen I.T., Banerjei L., Myers G.S.A., Nelson K.E., Seshadri R.,
RA Read T.D., Fouts D.E., Eisen J.A., Gill S.R., Heidelberg J.F., Tettelin H.,
RA Dodson R.J., Umayam L.A., Brinkac L.M., Beanan M.J., Daugherty S.C.,
RA DeBoy R.T., Durkin S.A., Kolonay J.F., Madupu R., Nelson W.C.,
RA Vamathevan J.J., Tran B., Upton J., Hansen T., Shetty J., Khouri H.M.,
RA Utterback T.R., Radune D., Ketchum K.A., Dougherty B.A., Fraser C.M.;
RT "Role of mobile DNA in the evolution of vancomycin-resistant Enterococcus
RT faecalis.";
RL Science 299:2071-2074(2003).
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; AE016830; AAO81599.1; -; Genomic_DNA.
DR RefSeq; NP_815529.1; NC_004668.1.
DR RefSeq; WP_002369240.1; NZ_KE136528.1.
DR AlphaFoldDB; Q833U4; -.
DR SMR; Q833U4; -.
DR STRING; 226185.EF_1834; -.
DR EnsemblBacteria; AAO81599; AAO81599; EF_1834.
DR KEGG; efa:EF1834; -.
DR PATRIC; fig|226185.45.peg.1686; -.
DR eggNOG; COG0698; Bacteria.
DR HOGENOM; CLU_091396_2_0_9; -.
DR UniPathway; UPA00702; UER00714.
DR Proteomes; UP000001415; 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; Sugar-phosphate isomerase, RpiB/LacA/LacB; 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 NCBIfam; TIGR01119; lacB; 1.
DR NCBIfam; TIGR00689; rpiB_lacA_lacB; 1.
DR PANTHER; PTHR30345:SF0; DNA DAMAGE-REPAIR_TOLERATION PROTEIN DRT102; 1.
DR PANTHER; PTHR30345; RIBOSE-5-PHOSPHATE ISOMERASE B; 1.
DR Pfam; PF02502; LacAB_rpiB; 1.
DR PIRSF; PIRSF005384; RpiB_LacA_B; 1.
DR SUPFAM; SSF89623; Ribose/Galactose isomerase RpiB/AlsB; 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_0000208134"
SQ SEQUENCE 171 AA; 18994 MW; A41D0EEC22452033 CRC64;
MKIAIGCDHI VTDTKIAVSD FLKAKGYEIL DVGTYDFTRT HYPIFGKKVG EAVMSNQADL
GICICGTGVG ITNAVNKVPG IRSALVRDMT TALYAKEELN ANVIGFGGKI TGEFLICDIA
AAFIEAHYHP TEDNEQLIEK INQVEKQHPE QQDAHFFDEF LDKWQRGVYH D
//
