ID   LPXB_PSEA7              Reviewed;         378 AA.
AC   A6V1E5;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   21-AUG-2007, sequence version 1.
DT   27-MAR-2024, entry version 75.
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=PSPA7_1496;
OS   Pseudomonas aeruginosa (strain PA7).
OC   Bacteria; Pseudomonadota; Gammaproteobacteria; Pseudomonadales;
OC   Pseudomonadaceae; Pseudomonas.
OX   NCBI_TaxID=381754;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=PA7;
RA   Dodson R.J., Harkins D., Paulsen I.T.;
RL   Submitted (JUN-2007) to the EMBL/GenBank/DDBJ databases.
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=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: Bacterial outer membrane biogenesis; LPS lipid A biosynthesis.
CC       {ECO:0000255|HAMAP-Rule:MF_00392}.
CC   -!- SIMILARITY: Belongs to the LpxB family. {ECO:0000255|HAMAP-
CC       Rule:MF_00392}.
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DR   EMBL; CP000744; ABR83312.1; -; Genomic_DNA.
DR   RefSeq; WP_003153755.1; NC_009656.1.
DR   AlphaFoldDB; A6V1E5; -.
DR   SMR; A6V1E5; -.
DR   CAZy; GT19; Glycosyltransferase Family 19.
DR   KEGG; pap:PSPA7_1496; -.
DR   HOGENOM; CLU_036577_3_0_6; -.
DR   UniPathway; UPA00973; -.
DR   Proteomes; UP000001582; 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   Gene3D; 3.40.50.2000; Glycogen Phosphorylase B; 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..378
FT                   /note="Lipid-A-disaccharide synthase"
FT                   /id="PRO_1000049407"
SQ   SEQUENCE   378 AA;  41580 MW;  4765978C96AC70B7 CRC64;
     MAGRLRVALV AGEASGDILG SGLMQALRAR HPEIEFIGVG GPRMEAEGLS SYFPMERLSV
     MGLVEVLGRL PELLRRRKRL IRTLIDARPD VMIGIDAPDF TLGVEHRLRQ AGLRTVHYVS
     PSVWAWRQKR VLKIREACDL MLALFPFEAR FYEEHGVPVR FVGHPLANTI PLQADRVAAR
     ERLGLPLDGQ VVALMPGSRG GEVGKLGELF LDTAQRLLGE RPGLRFVLPC ASAARREQIE
     RMLQGREPLP LTLLDGASHE ALAACDAVLI ASGTATLEAL LYKRPMVVAY RVAGLTYRIL
     KRLVKSPYIS LPNLLAGRLL VPELIQDAAT PRALATTLSP LLDDGSQQVE FFDAIHRALR
     QDASAQAAEA VLQLVERR
//