B1LGY4 (LPXB_ECOSM) Reviewed, UniProtKB/Swiss-Prot

Names and origin

Protein names

Recommended name:
Lipid-A-disaccharide synthase
EC=2.4.1.182

Gene names

Name:	lpxB
Ordered Locus Names:	EcSMS35_0193

Organism

Escherichia coli (strain SMS-3-5 / SECEC) [Complete proteome] [HAMAP]

Taxonomic identifier

439855 [NCBI]

Taxonomic lineage

cellular organisms › Bacteria › Proteobacteria › Gammaproteobacteria › Enterobacteriales › Enterobacteriaceae › Escherichia › Escherichia coli

Protein attributes

Sequence length	382 AA.
Sequence status	Complete.
Protein existence	Inferred from homology

General annotation (Comments)

Function	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 By similarity. HAMAP-Rule MF_00392
Catalytic activity	UDP-2,3-bis(3-hydroxytetradecanoyl)glucosamine + 2,3-bis(3-hydroxytetradecanoyl)-beta-D-glucosaminyl 1-phosphate = UDP + 2,3-bis(3-hydroxytetradecanoyl)-D-glucosaminyl-1,6-beta-D-2,3-bis(3-hydroxytetradecanoyl)-beta-D-glucosaminyl 1-phosphate. HAMAP-Rule MF_00392
Pathway	Glycolipid biosynthesis; lipid IV(A) biosynthesis; lipid IV(A) from (3R)-3-hydroxytetradecanoyl-[acyl-carrier-protein] and UDP-N-acetyl-alpha-D-glucosamine: step 5/6. HAMAP-Rule MF_00392
Sequence similarities	Belongs to the LpxB family.

Ontologies

Keywords
Biological process	Lipid A biosynthesis Lipid biosynthesis Lipid metabolism
Molecular function	Glycosyltransferase Transferase
Technical term	Complete proteome
Gene Ontology (GO)
Biological_process	lipid A biosynthetic process Inferred from electronic annotation. Source: UniProtKB-KW
Molecular_function	lipid-A-disaccharide synthase activity Inferred from electronic annotation. Source: EC
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 382	382	Lipid-A-disaccharide synthase HAMAP-Rule MF_00392		PRO_1000191477

Sequences

	Sequence		Length	Mass (Da)
	B1LGY4 [UniParc]. Last modified April 29, 2008. Version 1. Checksum: 634B0ABF86CD1223	FASTA	382	42,398
	10 20 30 40 50 60 MTEQRPLTIA LVAGETSGDI LGAGLIRALK ERVPNARFVG VAGPRMQAEG CEAWYEMEEL 70 80 90 100 110 120 AVMGIVEVLG RLRRLLHIRA DLTKRFGELK PDVFVGIDAP DFNITLEGNL KKQGVKTIHY 130 140 150 160 170 180 VSPSVWAWRQ KRVFKIGRAT DLVLAFLPFE KAFYDKYNVP CRFIGHTMAD AMPLDPDKNG 190 200 210 220 230 240 ARDVLGIPYD AHCLALLPGS RGAEVEMLSA DFLKTAQLLR QTYPDLEIVV PLVNAKRREQ 250 260 270 280 290 300 FERIKAEVAP DLAVHLLDGM GREAMVASDA ALLASGTAAL ECMLAKCPMV VGYRMKPFTF 310 320 330 340 350 360 WLAKRLVKTE YVSLPNLLAG RELVKELLQE ECEPQKLAAA LLPLLANGKT SHAMHDTFRE 370 380 LHQQIRCNAD EQAAQAVLEL AQ

References

[1]

"Insights into the environmental resistance gene pool from the genome sequence of the multidrug-resistant environmental isolate Escherichia coli SMS-3-5." Fricke W.F., Wright M.S., Lindell A.H., Harkins D.M., Baker-Austin C., Ravel J., Stepanauskas R. J. Bacteriol. 190:6779-6794(2008) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: SMS-3-5 / SECEC.

Cross-references

Sequence databases
EMBL GenBank DDBJ	CP000970 Genomic DNA. Translation: ACB17673.1.
RefSeq	YP_001742310.1. NC_010498.1.
3D structure databases
ProteinModelPortal	B1LGY4.
ModBase	Search...
Protein-protein interaction databases
STRING	439855.EcSMS35_0193.
Protein family/group databases
CAZy	GT19. Glycosyltransferase Family 19.
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
EnsemblBacteria	ACB17673; ACB17673; EcSMS35_0193.
GeneID	6144108.
KEGG	ecm:EcSMS35_0193.
PATRIC	18429214. VBIEscCol6161_0368.
Organism-specific databases
CMR	Search...
Phylogenomic databases
eggNOG	COG0763.
HOGENOM	HOG000018003.
KO	K00748.
OMA	PTVWAWR.
ProtClustDB	PRK00025.
Enzyme and pathway databases
BioCyc	ECOL439855:GHHB-193-MONOMER.
UniPathway	UPA00359; UER00481.
Family and domain databases
HAMAP	MF_00392. LpxB.
InterPro	IPR003835. Glyco_trans_19. [Graphical view]
Pfam	PF02684. LpxB. 1 hit. [Graphical view]
TIGRFAMs	TIGR00215. lpxB. 1 hit.
ProtoNet	Search...

Entry information

Entry name

LPXB_ECOSM

Accession

Primary (citable) accession number: B1LGY4

Entry history

Integrated into UniProtKB/Swiss-Prot:	April 14, 2009
Last sequence update:	April 29, 2008
Last modified:	May 29, 2013
This is version 40 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program