ID   LPXB_FRAP2              Reviewed;         380 AA.
AC   B0TXG8;
DT   20-MAY-2008, integrated into UniProtKB/Swiss-Prot.
DT   08-APR-2008, sequence version 1.
DT   27-MAR-2024, entry version 78.
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=Fphi_1201;
OS   Francisella philomiragia subsp. philomiragia (strain ATCC 25017 / FSC 153 /
OS   O#319-036).
OC   Bacteria; Pseudomonadota; Gammaproteobacteria; Thiotrichales;
OC   Francisellaceae; Francisella.
OX   NCBI_TaxID=484022;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 25017 / FSC 153 / O#319-036;
RG   US DOE Joint Genome Institute;
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   Chain P., Malfatti S., Shin M., Vergez L., Schmutz J., Larimer F., Land M.,
RA   Hauser L., Richardson P.;
RT   "Complete sequence of chromosome of Francisella philomiragia subsp.
RT   philomiragia ATCC 25017.";
RL   Submitted (DEC-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; CP000937; ABZ87426.1; -; Genomic_DNA.
DR   AlphaFoldDB; B0TXG8; -.
DR   SMR; B0TXG8; -.
DR   CAZy; GT19; Glycosyltransferase Family 19.
DR   KEGG; fph:Fphi_1201; -.
DR   eggNOG; COG0763; Bacteria.
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   Gene3D; 3.40.50.2000; Glycogen Phosphorylase B; 2.
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..380
FT                   /note="Lipid-A-disaccharide synthase"
FT                   /id="PRO_1000080279"
SQ   SEQUENCE   380 AA;  43415 MW;  9A695C990BAAB4CA CRC64;
     MRIGIVAGEL SGDQLGATLV EALKKKYPNA EIEGIGGPKM EAQGFKSLYP MDALSLIGFL
     EILSKGLSIL NIRRKIIKYF KHNKPDIFIG IDAPDFNLTV EKKLRASGIK TIHYVSPKIW
     VWREYRIKKI RKATDKILAI LPFEVEYYKN RHNFEAIYVG HPLAKNISLE IDRSKYKKRL
     GLENVELPIL SVLPGSRTTE VTRLLPLFLD AIEKLQESGY KFKAIMPLAK PSLKPIFDQY
     NSQIRSLGIE VLETNSHDVL KASDLSLLAS GTATLEAMLC KLPMVVGYKL SKLSAFIGRI
     LIRGHSYWAF PNILHKSEII KELIQEDCTV DNLFYELKRL FDDKQRNNYI VQEFKKIHEH
     MVVDTEEKII EVLDSIIEKS
//