Protein Info for ECD_02082 in Escherichia coli BL21

Annotation: GTP cyclohydrolase I

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

• TIGR00063: GTP cyclohydrolase I
  • amino acids 40 to 220 (181 residues), 286.5 bits, E=3.4e-90
• PF01227: GTP_cyclohydroI
  • amino acids 41 to 218 (178 residues), 206 bits, E=1.7e-65

Best Hits

Swiss-Prot: 100% identical to GCH1_SHISS: GTP cyclohydrolase 1 (folE) from Shigella sonnei (strain Ss046)

KEGG orthology group: K01495, GTP cyclohydrolase I [EC: 3.5.4.16] (inferred from 100% identity to eco:b2153)

MetaCyc: 100% identical to GTP cyclohydrolase 1 (Escherichia coli K-12 substr. MG1655)
GTP cyclohydrolase I. [EC: 3.5.4.16]

Predicted SEED Role

"GTP cyclohydrolase I (EC 3.5.4.16) type 1" in subsystem Folate Biosynthesis or Molybdenum cofactor biosynthesis or Pterin biosynthesis or Queuosine-Archaeosine Biosynthesis (EC 3.5.4.16)

MetaCyc Pathways

• superpathway of chorismate metabolism (54/59 steps found)
• superpathway of tetrahydrofolate biosynthesis and salvage (11/12 steps found)
• superpathway of tetrahydrofolate biosynthesis (9/10 steps found)
• 6-hydroxymethyl-dihydropterin diphosphate biosynthesis I (4/5 steps found)
• preQ₀ biosynthesis (3/4 steps found)
• tetrahydromonapterin biosynthesis (3/4 steps found)
• drosopterin and aurodrosopterin biosynthesis (5/7 steps found)
• 6-hydroxymethyl-dihydropterin diphosphate biosynthesis IV (Plasmodium) (2/3 steps found)
• erythro-tetrahydrobiopterin biosynthesis I (2/4 steps found)
• threo-tetrahydrobiopterin biosynthesis (2/4 steps found)

KEGG Metabolic Maps

• Folate biosynthesis

Isozymes

No predicted isozymes

Use Curated BLAST to search for 3.5.4.16

Protein Sequence (222 amino acids)

>ECD_02082 GTP cyclohydrolase I (Escherichia coli BL21)
MPSLSKEAALVHEALVARGLETPLRPPVHEMDNETRKSLIAGHMTEIMQLLNLDLADDSL
METPHRIAKMYVDEIFSGLDYANFPKITLIENKMKVDEMVTVRDITLTSTCEHHFVTIDG
KATVAYIPKDSVIGLSKINRIVQFFAQRPQVQERLTQQILIALQTLLGTNNVAVSIDAVH
YCVKARGIRDATSATTTTSLGGLFKSSQNTRHEFLRAVRHHN