ID   LPXB_SHIF8              Reviewed;         382 AA.
AC   Q0T827;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   05-SEP-2006, sequence version 1.
DT   27-MAR-2024, entry version 81.
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=SFV_0165;
OS   Shigella flexneri serotype 5b (strain 8401).
OC   Bacteria; Pseudomonadota; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Shigella.
OX   NCBI_TaxID=373384;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=8401;
RX   PubMed=16822325; DOI=10.1186/1471-2164-7-173;
RA   Nie H., Yang F., Zhang X., Yang J., Chen L., Wang J., Xiong Z., Peng J.,
RA   Sun L., Dong J., Xue Y., Xu X., Chen S., Yao Z., Shen Y., Jin Q.;
RT   "Complete genome sequence of Shigella flexneri 5b and comparison with
RT   Shigella flexneri 2a.";
RL   BMC Genomics 7:173-173(2006).
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; CP000266; ABF02449.1; -; Genomic_DNA.
DR   RefSeq; WP_000132064.1; NC_008258.1.
DR   AlphaFoldDB; Q0T827; -.
DR   SMR; Q0T827; -.
DR   CAZy; GT19; Glycosyltransferase Family 19.
DR   KEGG; sfv:SFV_0165; -.
DR   HOGENOM; CLU_036577_3_0_6; -.
DR   UniPathway; UPA00359; UER00481.
DR   Proteomes; UP000000659; 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_1000049422"
SQ   SEQUENCE   382 AA;  42381 MW;  5B19002D1C6DB798 CRC64;
     MTDQRPLTIA LVAGETSGDI LGAGLIRALK ERVPNARFVG VAGPRMQAEG CEAWYEIEEL
     AVMGIVEVLG RLRRLLHIRA DLTKRFGELK PDVFVGIDAP DFNITLEGNL KKQGIKTIHY
     VSPSVWAWRQ KRVFKIGRAT DLVLAFLPFE KAFYDKYNVP CRFIGHTMAD AMPLDPDKNG
     ARDVLGIPYD AHCLALLPGS RGAEVEMLSA DFLKTAQLLR QTYPDLEIVV PLVNAKRREQ
     FERIKAEVAP DLSVHLLDGM GREAMVASDA ALLASGTAAL ECMLAKCPMV VGYRMKPFTF
     WLAKRLVKTD YVSLPNLLAG RELVKELLQE ECEPQKLAAA LLPLLANGKT SHAMHDTFRE
     LHQQIRCNAD EQAAQAVLEL AQ
//