ID   LPXB_YERPS              Reviewed;         394 AA.
AC   Q667K2;
DT   31-OCT-2006, integrated into UniProtKB/Swiss-Prot.
DT   11-OCT-2004, sequence version 1.
DT   25-MAY-2022, entry version 82.
DE   RecName: Full=Lipid-A-disaccharide synthase {ECO:0000255|HAMAP-Rule:MF_00392};
DE            EC=2.4.1.182 {ECO:0000255|HAMAP-Rule:MF_00392};
GN   Name=lpxB {ECO:0000255|HAMAP-Rule:MF_00392}; OrderedLocusNames=YPTB2990;
OS   Yersinia pseudotuberculosis serotype I (strain IP32953).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Yersiniaceae; Yersinia.
OX   NCBI_TaxID=273123;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=IP32953;
RX   PubMed=15358858; DOI=10.1073/pnas.0404012101;
RA   Chain P.S.G., Carniel E., Larimer F.W., Lamerdin J., Stoutland P.O.,
RA   Regala W.M., Georgescu A.M., Vergez L.M., Land M.L., Motin V.L.,
RA   Brubaker R.R., Fowler J., Hinnebusch J., Marceau M., Medigue C.,
RA   Simonet M., Chenal-Francisque V., Souza B., Dacheux D., Elliott J.M.,
RA   Derbise A., Hauser L.J., Garcia E.;
RT   "Insights into the evolution of Yersinia pestis through whole-genome
RT   comparison with Yersinia pseudotuberculosis.";
RL   Proc. Natl. Acad. Sci. U.S.A. 101:13826-13831(2004).
CC   -!- FUNCTION: Condensation of UDP-2,3-diacylglucosamine and 2,3-
CC       diacylglucosamine-1-phosphate to form lipid A disaccharide, a precursor
CC       of lipid A, a phosphorylated glycolipid that anchors the
CC       lipopolysaccharide to the outer membrane of the cell.
CC       {ECO:0000255|HAMAP-Rule:MF_00392}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=2-N,3-O-bis[(3R)-3-hydroxytetradecanoyl]-alpha-D-glucosaminyl
CC         1-phosphate + UDP-2-N,3-O-bis[(3R)-3-hydroxytetradecanoyl]-alpha-D-
CC         glucosamine = H(+) + lipid A disaccharide (E. coli) + UDP;
CC         Xref=Rhea:RHEA:22668, ChEBI:CHEBI:15378, ChEBI:CHEBI:57957,
CC         ChEBI:CHEBI:58223, ChEBI:CHEBI:58466, ChEBI:CHEBI:78847;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00392};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=a lipid X + a UDP-2-N,3-O-bis[(3R)-3-hydroxyacyl]-alpha-D-
CC         glucosamine = a lipid A disaccharide + H(+) + UDP;
CC         Xref=Rhea:RHEA:67828, ChEBI:CHEBI:15378, ChEBI:CHEBI:58223,
CC         ChEBI:CHEBI:137748, ChEBI:CHEBI:176338, ChEBI:CHEBI:176343;
CC         EC=2.4.1.182; Evidence={ECO:0000255|HAMAP-Rule:MF_00392};
CC   -!- PATHWAY: Glycolipid biosynthesis; lipid IV(A) biosynthesis; lipid IV(A)
CC       from (3R)-3-hydroxytetradecanoyl-[acyl-carrier-protein] and UDP-N-
CC       acetyl-alpha-D-glucosamine: step 5/6. {ECO:0000255|HAMAP-
CC       Rule:MF_00392}.
CC   -!- SIMILARITY: Belongs to the LpxB family. {ECO:0000255|HAMAP-
CC       Rule:MF_00392}.
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DR   EMBL; BX936398; CAH22228.1; -; Genomic_DNA.
DR   RefSeq; WP_002212144.1; NZ_CP009712.1.
DR   AlphaFoldDB; Q667K2; -.
DR   SMR; Q667K2; -.
DR   CAZy; GT19; Glycosyltransferase Family 19.
DR   EnsemblBacteria; CAH22228; CAH22228; YPTB2990.
DR   GeneID; 66844581; -.
DR   KEGG; ypo:BZ17_3631; -.
DR   KEGG; yps:YPTB2990; -.
DR   PATRIC; fig|273123.14.peg.3812; -.
DR   OMA; PTVWAWR; -.
DR   UniPathway; UPA00359; UER00481.
DR   Proteomes; UP000001011; Chromosome.
DR   GO; GO:0008915; F:lipid-A-disaccharide synthase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0009245; P:lipid A biosynthetic process; IEA:UniProtKB-UniRule.
DR   HAMAP; MF_00392; LpxB; 1.
DR   InterPro; IPR003835; Glyco_trans_19.
DR   PANTHER; PTHR30372; PTHR30372; 1.
DR   Pfam; PF02684; LpxB; 1.
DR   TIGRFAMs; TIGR00215; lpxB; 1.
PE   3: Inferred from homology;
KW   Glycosyltransferase; Lipid A biosynthesis; Lipid biosynthesis;
KW   Lipid metabolism; Transferase.
FT   CHAIN           1..394
FT                   /note="Lipid-A-disaccharide synthase"
FT                   /id="PRO_0000255236"
SQ   SEQUENCE   394 AA;  43261 MW;  F4A481D7C188B25C CRC64;
     MQNSPLTADC SLNAGRPLTI GLVAGETSGD ILGAGLIRAL KVQVPNARFV GVAGPLMQAE
     GCEAWYEMEE LAVMGVVEVL ERLPRLLKIR KDLTQRFSEL SPDVFVGIDA PDFNITLEGR
     LKQRGIRTIH YVSPSVWAWR QKRVFKIGKA TDMVLAFLPF EKAFYDRFNV PCRFIGHTMA
     DAMPLVPDQQ AARAELGIAP NATCLALLPG SRHSEVEMLS ADFLRTAVIL RDKLPNLEVV
     VPLVNSKRRE QFERIKAEIA PDLSVHLLDG KARVAMIASD AALLASGTAA LECMLAKCPM
     VVGYRMKPFT FWLAERLVKT PYVSLPNLLA GEELVTELLQ QECQPQKLAG ALLPLLQGGS
     EIAALKERFL VLHQSIRCGA DEQAAQAVLE LADR