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Protein

Lipid-A-disaccharide synthase

Gene

lpxB

Organism
Pseudomonas syringae pv. tomato (strain DC3000)
Status
Reviewed-Annotation score: Annotation score: 2 out of 5-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

Pathway: 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-[3-hydroxymyristoyl] 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

Complete GO annotation...

Keywords - Molecular functioni

Glycosyltransferase, Transferase

Keywords - Biological processi

Lipid A biosynthesis, Lipid biosynthesis, Lipid metabolism

Enzyme and pathway databases

BioCyciPSYR223283:GJIX-1575-MONOMER.
UniPathwayiUPA00359; UER00481.

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:PSPTO_1547
OrganismiPseudomonas syringae pv. tomato (strain DC3000)
Taxonomic identifieri223283 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaGammaproteobacteriaPseudomonadalesPseudomonadaceaePseudomonas
ProteomesiUP000002515 Componenti: Chromosome

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 380380Lipid-A-disaccharide synthasePRO_0000190179Add
BLAST

Interactioni

Protein-protein interaction databases

STRINGi223283.PSPTO_1547.

Structurei

3D structure databases

ProteinModelPortaliQ886N0.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the LpxB family.UniRule annotation

Phylogenomic databases

eggNOGiCOG0763.
HOGENOMiHOG000018004.
KOiK00748.
OMAiAPQEWAW.
OrthoDBiEOG6FBWZR.
PhylomeDBiQ886N0.

Family and domain databases

HAMAPiMF_00392. LpxB.
InterProiIPR003835. Glyco_trans_19.
[Graphical view]
PfamiPF02684. LpxB. 1 hit.
[Graphical view]
TIGRFAMsiTIGR00215. lpxB. 1 hit.

Sequencei

Sequence statusi: Complete.

Q886N0-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MTSPLRIALV AGEASGDILG SGLMRALKAR HPDVRFIGVG GPLMEAEGMQ
60 70 80 90 100
SYFPMERLSV MGLVEVLGRL RELLARRKLL VQTLIDEKPD VFIGIDAPDF
110 120 130 140 150
TLNIELQLRR AGIKTVHYVS PSVWAWRQKR VLKIREGCDL MLTLLPFEAR
160 170 180 190 200
FYEEKGVPVR FVGHPLADTI PLESDRGATR AELGLSVDGP VVALMPGSRG
210 220 230 240 250
GEVGRLGALF FDAAERLLVE RPGLRFVLPC ASPQRRAQVE QLLQGRDLPI
260 270 280 290 300
TLLDGRSHVA LAACDAVLIA SGTATLEALL YKRPMVVAYR MAPLTFWVLK
310 320 330 340 350
RLVKSPYVSL PNLLAQRLLV PELLQDDATP EALARTLLPL IEDGHAQTEG
360 370 380
FDAIHRILRR DASNQAADAV LSLLGLPLSL
Length:380
Mass (Da):41,686
Last modified:June 1, 2003 - v1
Checksum:iD78706BD0A6E3FF0
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AE016853 Genomic DNA. Translation: AAO55067.1.
RefSeqiNP_791372.1. NC_004578.1.
WP_011103595.1. NC_004578.1.

Genome annotation databases

EnsemblBacteriaiAAO55067; AAO55067; PSPTO_1547.
GeneIDi1183184.
KEGGipst:PSPTO_1547.
PATRICi19994346. VBIPseSyr93040_1573.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AE016853 Genomic DNA. Translation: AAO55067.1.
RefSeqiNP_791372.1. NC_004578.1.
WP_011103595.1. NC_004578.1.

3D structure databases

ProteinModelPortaliQ886N0.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi223283.PSPTO_1547.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiAAO55067; AAO55067; PSPTO_1547.
GeneIDi1183184.
KEGGipst:PSPTO_1547.
PATRICi19994346. VBIPseSyr93040_1573.

Phylogenomic databases

eggNOGiCOG0763.
HOGENOMiHOG000018004.
KOiK00748.
OMAiAPQEWAW.
OrthoDBiEOG6FBWZR.
PhylomeDBiQ886N0.

Enzyme and pathway databases

UniPathwayiUPA00359; UER00481.
BioCyciPSYR223283:GJIX-1575-MONOMER.

Family and domain databases

HAMAPiMF_00392. LpxB.
InterProiIPR003835. Glyco_trans_19.
[Graphical view]
PfamiPF02684. LpxB. 1 hit.
[Graphical view]
TIGRFAMsiTIGR00215. lpxB. 1 hit.
ProtoNetiSearch...

Publicationsi

  1. Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
    Strain: DC3000.

Entry informationi

Entry nameiLPXB_PSESM
AccessioniPrimary (citable) accession number: Q886N0
Entry historyi
Integrated into UniProtKB/Swiss-Prot: October 31, 2003
Last sequence update: June 1, 2003
Last modified: May 27, 2015
This is version 66 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

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

External Data

Dasty 3

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into Uniref entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.