Protein Info for b0369 in Escherichia coli BW25113

Name: hemB
Annotation: 5-aminolevulinate dehydratase = porphobilinogen synthase (VIMSS)

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 HEM2_SHIFL: Delta-aminolevulinic acid dehydratase (hemB) from Shigella flexneri

KEGG orthology group: K01698, porphobilinogen synthase [EC: 4.2.1.24] (inferred from 100% identity to eco:b0369)

MetaCyc: 100% identical to porphobilinogen synthase (Escherichia coli K-12 substr. MG1655)
Porphobilinogen synthase. [EC: 4.2.1.24]

Predicted SEED Role

"Porphobilinogen synthase (EC 4.2.1.24)" in subsystem Experimental tye or Heme and Siroheme Biosynthesis (EC 4.2.1.24)

MetaCyc Pathways

superpathway of heme b biosynthesis from glutamate (10/10 steps found)
tetrapyrrole biosynthesis I (from glutamate) (6/6 steps found)
superpathway of heme b biosynthesis from glycine (7/8 steps found)
tetrapyrrole biosynthesis II (from glycine) (3/4 steps found)
adenosylcobalamin biosynthesis II (aerobic) (17/33 steps found)
adenosylcobalamin biosynthesis I (anaerobic) (16/36 steps found)
superpathway of bacteriochlorophyll a biosynthesis (6/26 steps found)

KEGG Metabolic Maps

Porphyrin and chlorophyll metabolism

Isozymes

No predicted isozymes

Use Curated BLAST to search for 4.2.1.24

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 P0ACB2 at UniProt or InterPro

Protein Sequence (324 amino acids)

>b0369 5-aminolevulinate dehydratase = porphobilinogen synthase (VIMSS) (Escherichia coli BW25113)
MTDLIQRPRRLRKSPALRAMFEETTLSLNDLVLPIFVEEEIDDYKAVEAMPGVMRIPEKH
LAREIERIANAGIRSVMTFGISHHTDETGSDAWREDGLVARMSRICKQTVPEMIVMSDTC
FCEYTSHGHCGVLCEHGVDNDATLENLGKQAVVAAAAGADFIAPSAAMDGQVQAIRQALD
AAGFKDTAIMSYSTKFASSFYGPFREAAGSALKGDRKSYQMNPMNRREAIRESLLDEAQG
ADCLMVKPAGAYLDIVRELRERTELPIGAYQVSGEYAMIKFAALAGAIDEEKVVLESLGS
IKRAGADLIFSYFALDLAEKKILR