ID   LPXB_SHESR              Reviewed;         385 AA.
AC   Q0HT75;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   03-OCT-2006, sequence version 1.
DT   27-MAR-2024, entry version 83.
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=Shewmr7_2695;
OS   Shewanella sp. (strain MR-7).
OC   Bacteria; Pseudomonadota; Gammaproteobacteria; Alteromonadales;
OC   Shewanellaceae; Shewanella.
OX   NCBI_TaxID=60481;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=MR-7;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C.,
RA   Glavina del Rio T., Hammon N., Israni S., Dalin E., Tice H., Pitluck S.,
RA   Kiss H., Brettin T., Bruce D., Han C., Tapia R., Gilna P., Schmutz J.,
RA   Larimer F., Land M., Hauser L., Kyrpides N., Mikhailova N., Nealson K.,
RA   Konstantinidis K., Klappenbach J., Tiedje J., Richardson P.;
RT   "Complete sequence of chromosome 1 of Shewanella sp. MR-7.";
RL   Submitted (AUG-2006) 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; CP000444; ABI43680.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q0HT75; -.
DR   SMR; Q0HT75; -.
DR   CAZy; GT19; Glycosyltransferase Family 19.
DR   KEGG; shm:Shewmr7_2695; -.
DR   HOGENOM; CLU_036577_3_0_6; -.
DR   UniPathway; UPA00973; -.
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..385
FT                   /note="Lipid-A-disaccharide synthase"
FT                   /id="PRO_1000049420"
SQ   SEQUENCE   385 AA;  42434 MW;  D1197537D36764A3 CRC64;
     MSKKSQLVFA MVAGELSGDI LGAGLMAALQ KTHPNARFVG IGGPRMEALG FESLFAMEEL
     AVMGIVEVLS RLPRLLHVRS SLIKSITELK PDCFIGIDAP DFNIGLELKL KAQGIKTVHY
     VSPSVWAWRP KRIFKIAKAT NMVLSLLPFE KAFYDKHQVP CTFVGHTLAD DIPLESDKAS
     ARQLLELDPD AEYLAILPGS RGGELKQLAE PFVKAALLIK QQFPDIRFVT PLVNQKRREQ
     FEQALKAHAP DLEIHMVEGK SREVMAAADG ILLASGTATL EAMLIKRPMV VAYRVSPLTY
     EIAKTMMQVN RFSLPNLLAG RDVVPELIQH DCTPEKIAAA VGVELNRDFA PIKAEFERLH
     QLLRCDASQK AAEAVLALVD AKELN
//