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Protein

Lipid-A-disaccharide synthase

Gene

lpxB

Organism
Burkholderia ambifaria (strain MC40-6)
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. Acyl-[acyl-carrier-protein]--UDP-N-acetylglucosamine O-acyltransferase (lpxA)
  2. UDP-3-O-acyl-N-acetylglucosamine deacetylase (lpxC)
  3. no protein annotated in this organism
  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

BioCyciBAMB398577:G1GBO-1935-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:BamMC406_1908
OrganismiBurkholderia ambifaria (strain MC40-6)
Taxonomic identifieri398577 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaBetaproteobacteriaBurkholderialesBurkholderiaceaeBurkholderiaBurkholderia cepacia complex
Proteomesi
  • UP000001680 Componenti: Chromosome 1

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_10001914631 – 389Lipid-A-disaccharide synthaseAdd BLAST389

Structurei

3D structure databases

ProteinModelPortaliB1YS61
SMRiB1YS61
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the LpxB family.UniRule annotation

Phylogenomic databases

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.

B1YS61-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MSLPTNQLRL AMVAGEPSGD LLAASLLGGL QERLPASTRY YGIGGQRMLA
60 70 80 90 100
HGFDSHWQMD KLTVRGYVEA LGQIPEILRI RGELKRQLLA ERPDAFIGVD
110 120 130 140 150
APDFNFSVEQ AARDAGIPSI HFVCPSIWAW RGGRIKKIAK SVDHMLCLFP
160 170 180 190 200
FEPAILDKAG VASTYVGHPL ADEIPLEPDT HGARIALGLP ADGPVIAVLP
210 220 230 240 250
GSRRSEIGLI GPTFFAAMAL MQQREPGVRF VMPAATPALR ELLQPLVDAH
260 270 280 290 300
PQLALTITDG RSQVAMTAAD AILVKSGTVT LEAALLKKPM VISYKVPWLT
310 320 330 340 350
GQIMRRQGYL PYVGLPNILA GRFVVPELLQ HFATPEALAD ATLTQLRDDA
360 370 380
NRRTLTEVFT EMHLSLRQNT AAKAAEAVVR VLDQRRGRA
Length:389
Mass (Da):42,330
Last modified:May 20, 2008 - v1
Checksum:iAD4D78B05C5FEE61
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP001025 Genomic DNA Translation: ACB64390.1
RefSeqiWP_012364128.1, NC_010551.1

Genome annotation databases

EnsemblBacteriaiACB64390; ACB64390; BamMC406_1908
KEGGibac:BamMC406_1908

Similar proteinsi

Entry informationi

Entry nameiLPXB_BURA4
AccessioniPrimary (citable) accession number: B1YS61
Entry historyiIntegrated into UniProtKB/Swiss-Prot: April 14, 2009
Last sequence update: May 20, 2008
Last modified: May 23, 2018
This is version 62 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

Documents

  1. PATHWAY comments
    Index of metabolic and biosynthesis pathways
  2. SIMILARITY comments
    Index of protein domains and families

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