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Protein

Lipid-A-disaccharide synthase

Gene

lpxB

Organism
Citrobacter koseri (strain ATCC BAA-895 / CDC 4225-83 / SGSC4696)
Status
Reviewed-Annotation score: -Protein inferred from homologyi

Functioni

Condensation of UDP-2,3-diacylglucosamine and 2,3-diacylglucosamine-1-phosphate to form lipid A disaccharide, a precursor of lipid A, a phosphorylated glycolipid that anchors the lipopolysaccharide to the outer membrane of the cell.UniRule annotation

Catalytic activityi

UDP-2-N,3-O-bis((3R)-3-hydroxytetradecanoyl)-alpha-D-glucosamine + 2-N,3-O-bis((3R)-3-hydroxytetradecanoyl)-alpha-D-glucosaminyl 1-phosphate = UDP + 2-N,3-O-bis((3R)-3-hydroxytetradecanoyl)-beta-D-glucosaminyl-(1->6)-2-N,3-O-bis((3R)-3-hydroxytetradecanoyl)-alpha-D-glucosaminyl 1-phosphate.UniRule annotation

Pathwayi: lipid IV(A) biosynthesis

This protein is involved in step 5 of the subpathway that synthesizes lipid IV(A) from (3R)-3-hydroxytetradecanoyl-[acyl-carrier-protein] and UDP-N-acetyl-alpha-D-glucosamine.UniRule annotation
Proteins known to be involved in the 6 steps of the subpathway in this organism are:
  1. no protein annotated in this organism
  2. UDP-3-O-acyl-N-acetylglucosamine deacetylase (lpxC)
  3. UDP-3-O-(3-hydroxymyristoyl)glucosamine N-acyltransferase (lpxD)
  4. UDP-2,3-diacylglucosamine hydrolase (lpxH)
  5. Lipid-A-disaccharide synthase (lpxB)
  6. Tetraacyldisaccharide 4'-kinase (lpxK)
This subpathway is part of the pathway lipid IV(A) biosynthesis, which is itself part of Glycolipid biosynthesis.
View all proteins of this organism that are known to be involved in the subpathway that synthesizes lipid IV(A) from (3R)-3-hydroxytetradecanoyl-[acyl-carrier-protein] and UDP-N-acetyl-alpha-D-glucosamine, the pathway lipid IV(A) biosynthesis and in Glycolipid biosynthesis.

GO - Molecular functioni

GO - Biological processi

Keywordsi

Molecular functionGlycosyltransferase, Transferase
Biological processLipid A biosynthesis, Lipid biosynthesis, Lipid metabolism

Enzyme and pathway databases

BioCyciCKOS290338:G1G9Z-2797-MONOMER
UniPathwayiUPA00359; UER00481

Protein family/group databases

CAZyiGT19 Glycosyltransferase Family 19

Names & Taxonomyi

Protein namesi
Recommended name:
Lipid-A-disaccharide synthaseUniRule annotation (EC:2.4.1.182UniRule annotation)
Gene namesi
Name:lpxBUniRule annotation
Ordered Locus Names:CKO_03184
OrganismiCitrobacter koseri (strain ATCC BAA-895 / CDC 4225-83 / SGSC4696)
Taxonomic identifieri290338 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaGammaproteobacteriaEnterobacteralesEnterobacteriaceaeCitrobacter
Proteomesi
  • UP000008148 Componenti: Chromosome

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_10000493931 – 382Lipid-A-disaccharide synthaseAdd BLAST382

Interactioni

Protein-protein interaction databases

STRINGi290338.CKO_03184

Structurei

3D structure databases

ProteinModelPortaliA8ALA6
SMRiA8ALA6
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the LpxB family.UniRule annotation

Phylogenomic databases

eggNOGiENOG4105D0V Bacteria
COG0763 LUCA
HOGENOMiHOG000018003
KOiK00748
OMAiPTVWAWR
OrthoDBiPOG091H01NW

Family and domain databases

HAMAPiMF_00392 LpxB, 1 hit
InterProiView protein in InterPro
IPR003835 Glyco_trans_19
PANTHERiPTHR30372 PTHR30372, 1 hit
PfamiView protein in Pfam
PF02684 LpxB, 1 hit
TIGRFAMsiTIGR00215 lpxB, 1 hit

Sequencei

Sequence statusi: Complete.

A8ALA6-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MAEQRPLTIA LVAGETSGDI LGAGLIRALK ARVPNARFVG VAGPRMQAEG
60 70 80 90 100
CEAWYEMEEL AVMGIVEVLG RLRRLLHIRA DLTRRFTELQ PDVFVGIDAP
110 120 130 140 150
DFNITLEGNL KKQGIKTIHY VSPSVWAWRQ KRVFKIGRST NMVLAFLPFE
160 170 180 190 200
KAFYDKFNVP CRFIGHTMAD AMPLDPDKNA ARDVLGISHD AHCLALLPGS
210 220 230 240 250
RGAEVEMLSA DFLKTAQLLR QTYPDLEVVV PLVNAKRREQ FERIKAEVAP
260 270 280 290 300
ELSVHLLDGM GREAMVASDA ALLASGTAAL ECMLAKCPMV VGYRMKPFTF
310 320 330 340 350
WLAKRLVKTD YVSLPNLLAG RELVKELLQE ECEPHALAEA LLPLLANGKT
360 370 380
SHAMHDTFRE LHQQIRCNAD EQAADAVLEL AQ
Length:382
Mass (Da):42,389
Last modified:October 23, 2007 - v1
Checksum:iEB5ABFFE62A33C07
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000822 Genomic DNA Translation: ABV14269.1
RefSeqiWP_012133975.1, NC_009792.1

Genome annotation databases

EnsemblBacteriaiABV14269; ABV14269; CKO_03184
KEGGicko:CKO_03184

Similar proteinsi

Entry informationi

Entry nameiLPXB_CITK8
AccessioniPrimary (citable) accession number: A8ALA6
Entry historyiIntegrated into UniProtKB/Swiss-Prot: January 15, 2008
Last sequence update: October 23, 2007
Last modified: May 23, 2018
This is version 57 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

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