Protein Info for b0182 in Escherichia coli BW25113

Name: lpxB
Annotation: lipid-A-disaccharide synthase (NCBI)

These analyses and tools can help you predict a protein's function, but be skeptical. For enzymes, over 10% of annotations from KEGG or SEED are probably incorrect. For other types of proteins, the error rates may be much higher. MetaCyc and Swiss-Prot have low error rates, but the best hits in these databases are often quite distant, so this protein's function may not be the same. TIGRFam has low error rates. Finally, many experimentally-characterized proteins are not in any of these databases. To find relevant papers, use PaperBLAST.

Protein Families and Features

Best Hits

Swiss-Prot: 100% identical to LPXB_ECOBW: Lipid-A-disaccharide synthase (lpxB) from Escherichia coli (strain K12 / MC4100 / BW2952)

KEGG orthology group: K00748, lipid-A-disaccharide synthase [EC: 2.4.1.182] (inferred from 100% identity to eco:b0182)

MetaCyc: 100% identical to lipid A disaccharide synthase (Escherichia coli K-12 substr. MG1655)
Lipid-A-disaccharide synthase. [EC: 2.4.1.182]

Predicted SEED Role

"Lipid-A-disaccharide synthase (EC 2.4.1.182)" in subsystem KDO2-Lipid A biosynthesis (EC 2.4.1.182)

MetaCyc Pathways

superpathway of Kdo₂-lipid A biosynthesis (24/25 steps found)
superpathway of (Kdo)₂-lipid A biosynthesis (17/17 steps found)
lipid IV_A biosynthesis (P. gingivalis) (9/9 steps found)
lipid IV_A biosynthesis (E. coli) (6/6 steps found)
lipid IV_A biosynthesis (H. pylori) (6/6 steps found)
lipid IV_A biosynthesis (P. putida) (6/6 steps found)
lipid IV_A biosynthesis (Vibrio cholerae serogroup O1 El Tor) (6/6 steps found)
lipid IV_A biosynthesis (generic) (6/6 steps found)
lipid IV_A biosynthesis (2,3-diamino-2,3-dideoxy-D-glucopyranose-containing) (5/6 steps found)

KEGG Metabolic Maps

Lipopolysaccharide biosynthesis

Isozymes

No predicted isozymes

Use Curated BLAST to search for 2.4.1.182

Sequence Analysis Tools

PaperBLAST (search for papers about homologs of this protein)

Search CDD (the Conserved Domains Database, which includes COG and superfam)

Search structures

Predict protein localization: PSORTb (Gram-negative bacteria)

Predict transmembrane helices and signal peptides: Phobius

Check the current SEED with FIGfam search

Find homologs in fast.genomics or the ENIGMA genome browser

See P10441 at UniProt or InterPro

Protein Sequence (382 amino acids)

>b0182 lipid-A-disaccharide synthase (NCBI) (Escherichia coli BW25113)
MTEQRPLTIALVAGETSGDILGAGLIRALKEHVPNARFVGVAGPRMQAEGCEAWYEMEEL
AVMGIVEVLGRLRRLLHIRADLTKRFGELKPDVFVGIDAPDFNITLEGNLKKQGIKTIHY
VSPSVWAWRQKRVFKIGRATDLVLAFLPFEKAFYDKYNVPCRFIGHTMADAMPLDPDKNA
ARDVLGIPHDAHCLALLPGSRGAEVEMLSADFLKTAQLLRQTYPDLEIVVPLVNAKRREQ
FERIKAEVAPDLSVHLLDGMGREAMVASDAALLASGTAALECMLAKCPMVVGYRMKPFTF
WLAKRLVKTDYVSLPNLLAGRELVKELLQEECEPQKLAAALLPLLANGKTSHAMHDTFRE
LHQQIRCNADEQAAQAVLELAQ