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Protein

Lipid-A-disaccharide synthase

Gene

lpxB

Organism
Idiomarina loihiensis (strain ATCC BAA-735 / DSM 15497 / L2-TR)
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

BioCyciILOI283942:G1G13-848-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:IL0832
OrganismiIdiomarina loihiensis (strain ATCC BAA-735 / DSM 15497 / L2-TR)
Taxonomic identifieri283942 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaGammaproteobacteriaAlteromonadalesIdiomarinaceaeIdiomarina
Proteomesi

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00002551891 – 379Lipid-A-disaccharide synthaseAdd BLAST379

Interactioni

Protein-protein interaction databases

STRINGi283942.IL0832

Structurei

3D structure databases

ProteinModelPortaliQ5QYW1
SMRiQ5QYW1
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.

Q5QYW1-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MSRNQPPKIA IVAGEHSGDL LGAGLMQAIA KRHPNATFIG VGGPLMAERG
60 70 80 90 100
MDSFFAMDDL AVMGIAEVFQ QLPKLLKHRK NLVNYLISEQ PDVMIGIDAP
110 120 130 140 150
DFNLTVEARL KKAGISTIHY VSPSVWAWRE GRIKGIKKAV DHVLCLLPFE
160 170 180 190 200
KDFYDKHQLP ATFVGHPLAD DIPMQWQQTE ARNELELEPA VMYLAILPGS
210 220 230 240 250
RKGEIARMAP VFLKVANKLA ERYPELRFVA PMISEARAAQ FRELVDQYSP
260 270 280 290 300
ELNIVLPVGE SRKVMAAANY LLLTSGTVAL EALLIKRPMV VAYRFHWLSY
310 320 330 340 350
QIIKRLFHAP FFSLPNLLAG KEIVPELAQS DASEEAIEQA LVQLIEQDNE
360 370
PLLEQFTNIH QQLQVSASEK AADVVESFL
Length:379
Mass (Da):42,324
Last modified:January 4, 2005 - v1
Checksum:i774238F0BB3A3A0B
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AE017340 Genomic DNA Translation: AAV81672.1
RefSeqiWP_011234083.1, NC_006512.1

Genome annotation databases

EnsemblBacteriaiAAV81672; AAV81672; IL0832
KEGGiilo:IL0832

Entry informationi

Entry nameiLPXB_IDILO
AccessioniPrimary (citable) accession number: Q5QYW1
Entry historyiIntegrated into UniProtKB/Swiss-Prot: October 31, 2006
Last sequence update: January 4, 2005
Last modified: May 23, 2018
This is version 67 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

Documents

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

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