ID   LPXB_SALA4              Reviewed;         382 AA.
AC   B5F8U3;
DT   14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT   14-OCT-2008, sequence version 1.
DT   27-MAR-2024, entry version 71.
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};
GN   OrderedLocusNames=SeAg_B0270;
OS   Salmonella agona (strain SL483).
OC   Bacteria; Pseudomonadota; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Salmonella.
OX   NCBI_TaxID=454166;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=SL483;
RX   PubMed=21602358; DOI=10.1128/jb.00297-11;
RA   Fricke W.F., Mammel M.K., McDermott P.F., Tartera C., White D.G.,
RA   Leclerc J.E., Ravel J., Cebula T.A.;
RT   "Comparative genomics of 28 Salmonella enterica isolates: evidence for
RT   CRISPR-mediated adaptive sublineage evolution.";
RL   J. Bacteriol. 193:3556-3568(2011).
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; CP001138; ACH50660.1; -; Genomic_DNA.
DR   RefSeq; WP_000741214.1; NC_011149.1.
DR   AlphaFoldDB; B5F8U3; -.
DR   SMR; B5F8U3; -.
DR   CAZy; GT19; Glycosyltransferase Family 19.
DR   KEGG; sea:SeAg_B0270; -.
DR   HOGENOM; CLU_036577_3_0_6; -.
DR   UniPathway; UPA00359; UER00481.
DR   Proteomes; UP000008819; 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   CDD; cd01635; Glycosyltransferase_GTB-type; 1.
DR   HAMAP; MF_00392; LpxB; 1.
DR   InterPro; IPR003835; Glyco_trans_19.
DR   NCBIfam; TIGR00215; lpxB; 1.
DR   PANTHER; PTHR30372; LIPID-A-DISACCHARIDE SYNTHASE; 1.
DR   PANTHER; PTHR30372:SF7; LIPID-A-DISACCHARIDE SYNTHASE; 1.
DR   Pfam; PF02684; LpxB; 1.
DR   SUPFAM; SSF53756; UDP-Glycosyltransferase/glycogen phosphorylase; 1.
PE   3: Inferred from homology;
KW   Glycosyltransferase; Lipid A biosynthesis; Lipid biosynthesis;
KW   Lipid metabolism; Transferase.
FT   CHAIN           1..382
FT                   /note="Lipid-A-disaccharide synthase"
FT                   /id="PRO_1000123057"
SQ   SEQUENCE   382 AA;  42424 MW;  D5DFD3E2479380F3 CRC64;
     MAAQRPLTIA LVAGETSGDI LGAGLIRALK ARVPNARFVG VAGPRMQAEG CEAWYEMEEL
     AVMGIVEVLG RLRRLLHIRA DLTRRFTELK PDVFVGIDAP DFNITLEGNL KKQGIKTIHY
     VSPSVWAWRQ KRVFKIGRST HMVLAFLPFE KAFYDKFNVP CRFIGHTMAD AMPLDPDKNA
     ARDVLGIPHD AHCLALLPGS RGAEVEMLSA DFLKTAQLLR QRYPDLEVVV PLVNAKRREQ
     FEKIKAEVAP DLAAHLLDGM AREAMIASDA ALLASGTAAL ECMLAKCPMV VGYRMKPFTF
     WLAKRLVKTE YVSLPNLLAG RELVKELLQE ECEPQKLAEA LLPLLANGKT SHAMHDTFRE
     LHQQIRCNAD EQAADAVLEL AQ
//