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Protein

Lipid-A-disaccharide synthase

Gene

lpxB

Organism
Helicobacter pylori (strain G27)
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. no protein annotated in this organism
  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

BioCyciHPYL563041:G1GTQ-861-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:HPG27_821
OrganismiHelicobacter pylori (strain G27)
Taxonomic identifieri563041 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaEpsilonproteobacteriaCampylobacteralesHelicobacteraceaeHelicobacter
Proteomesi
  • UP000001735 Componenti: Chromosome

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_10001230521 – 360Lipid-A-disaccharide synthaseAdd BLAST360

Proteomic databases

PRIDEiB5Z7M7

Structurei

3D structure databases

SMRiB5Z7M7
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the LpxB family.UniRule annotation

Phylogenomic databases

HOGENOMiHOG000018004
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.

B5Z7M7-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MPTILVSALE ASSNMHLEEL HRNLPEDYRF IGVFEGKNAL YSPREFSIMG
60 70 80 90 100
FRDVIGRLGF LLKAHKEMVQ LAKQADMVLL MDSSSFNIPL AKKIKKQDPH
110 120 130 140 150
KKIMYYILPQ VWAWKKWRAK SLEKYCDFLG AILPFEVGYY QKKAQYVGHP
160 170 180 190 200
LLDEIKYYKK DIKGETLVFM PGSRKSEIAK MFPLFVKVAQ ILEQNEGFKR
210 220 230 240 250
RVLVVPSFFK GLDLKALYGE DIQLFEISYD AHKSLFEAEF AFICSGTATL
260 270 280 290 300
EAALIGTPFV LAYRAKTMDF LIARMLVNLH YIGLANIFYN ALNDETPGLG
310 320 330 340 350
ESQLHPELIQ HFLSVEGLLK AYEEMDRERY FKESLRLREY LKHGSARKIA
360
NEMAFLLNLT
Length:360
Mass (Da):41,582
Last modified:November 25, 2008 - v1
Checksum:i10D61A19E0842462
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP001173 Genomic DNA Translation: ACI27576.1
RefSeqiWP_001142235.1, NC_011333.1

Genome annotation databases

EnsemblBacteriaiACI27576; ACI27576; HPG27_821
KEGGihpg:HPG27_821

Similar proteinsi

Entry informationi

Entry nameiLPXB_HELPG
AccessioniPrimary (citable) accession number: B5Z7M7
Entry historyiIntegrated into UniProtKB/Swiss-Prot: April 14, 2009
Last sequence update: November 25, 2008
Last modified: May 23, 2018
This is version 53 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

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