LACB_STRS2
ID LACB_STRS2 Reviewed; 171 AA.
AC A4W1H6;
DT 05-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT 29-MAY-2007, sequence version 1.
DT 25-MAY-2022, entry version 72.
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=SSU98_1057;
OS Streptococcus suis (strain 98HAH33).
OC Bacteria; Firmicutes; Bacilli; Lactobacillales; Streptococcaceae;
OC Streptococcus.
OX NCBI_TaxID=391296;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=98HAH33;
RX PubMed=17375201; DOI=10.1371/journal.pone.0000315;
RA Chen C., Tang J., Dong W., Wang C., Feng Y., Wang J., Zheng F., Pan X.,
RA Liu D., Li M., Song Y., Zhu X., Sun H., Feng T., Guo Z., Ju A., Ge J.,
RA Dong Y., Sun W., Jiang Y., Wang J., Yan J., Yang H., Wang X., Gao G.F.,
RA Yang R., Wang J., Yu J.;
RT "A glimpse of streptococcal toxic shock syndrome from comparative genomics
RT of S. suis 2 Chinese isolates.";
RL PLoS ONE 2:E315-E315(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; CP000408; ABP92215.1; -; Genomic_DNA.
DR AlphaFoldDB; A4W1H6; -.
DR SMR; A4W1H6; -.
DR KEGG; ssv:SSU98_1057; -.
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_1000068932"
SQ SEQUENCE 171 AA; 18986 MW; 42CB4709CFB782B8 CRC64;
MKIAIGCDHI VTYEKIAVVD YLKNQGYEVL DFGTYDNVRT HYPIFGKKVG EAVVSGQADL
GICICGTGVG INNAVNKVPG VRSALVRDMT SALYAKEELN ANVIGFGGKI TGELLMCDII
EAFIKAEYKP TEENKRLIEK IAAVETLNQE QANPEFFTEF LEKWDRGEYH D