ID   LPXB_MAGMM              Reviewed;         388 AA.
AC   A0L8R9;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   12-DEC-2006, sequence version 1.
DT   27-MAR-2024, entry version 80.
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=Mmc1_1854;
OS   Magnetococcus marinus (strain ATCC BAA-1437 / JCM 17883 / MC-1).
OC   Bacteria; Pseudomonadota; Alphaproteobacteria; Magnetococcales;
OC   Magnetococcaceae; Magnetococcus.
OX   NCBI_TaxID=156889;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-1437 / JCM 17883 / MC-1;
RX   PubMed=19465526; DOI=10.1128/aem.02874-08;
RA   Schubbe S., Williams T.J., Xie G., Kiss H.E., Brettin T.S., Martinez D.,
RA   Ross C.A., Schuler D., Cox B.L., Nealson K.H., Bazylinski D.A.;
RT   "Complete genome sequence of the chemolithoautotrophic marine magnetotactic
RT   coccus strain MC-1.";
RL   Appl. Environ. Microbiol. 75:4835-4852(2009).
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; CP000471; ABK44362.1; -; Genomic_DNA.
DR   RefSeq; WP_011713506.1; NC_008576.1.
DR   AlphaFoldDB; A0L8R9; -.
DR   SMR; A0L8R9; -.
DR   STRING; 156889.Mmc1_1854; -.
DR   CAZy; GT19; Glycosyltransferase Family 19.
DR   KEGG; mgm:Mmc1_1854; -.
DR   eggNOG; COG0763; Bacteria.
DR   HOGENOM; CLU_036577_3_0_5; -.
DR   OrthoDB; 9801642at2; -.
DR   UniPathway; UPA00973; -.
DR   Proteomes; UP000002586; 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; Reference proteome; Transferase.
FT   CHAIN           1..388
FT                   /note="Lipid-A-disaccharide synthase"
FT                   /id="PRO_1000049404"
SQ   SEQUENCE   388 AA;  43202 MW;  D8469AF43AC08D7F CRC64;
     MGRPLRIAIV TGEASGDLLA ASLVSGLKKR FPRMQIYGIG GPRMKMLGLD SMADAQELSI
     IGVVEVLNRF PRIRTIFNAL LKRLQSEPPD LLITVDLPDF SLRMARKAKQ LGIPTVHYVS
     PQVWAWRSGR AKTIASYLDL LLCLFPFEPR YYANTGLEAH FVGHPLVQEA VPSYSRSEAR
     KILGVSEAGQ LVAIMPGSRR SEIQRLLETF LRTAERLWKR RTNLSFVLIQ AETISDQQLY
     EVWPEALRDL PVIVRHGNAY NWLAASDALL VASGTATLEA ALIGIPMVVA YKVNPLTYQI
     GKQLIKSKFI SLPNLIAQSA IVEERIQQDA NPEQLSEDLI QLLNRPQEAM AMREALRVVK
     QSLLPPTHGA VEVVSDFILH KVGYRPGG
//