Protein Info for Psyr_4406 in Pseudomonas syringae pv. syringae B728a
Annotation: IMP cyclohydrolase / phosphoribosylaminoimidazolecarboxamide formyltransferase
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: 98% identical to PUR9_PSESM: Bifunctional purine biosynthesis protein PurH (purH) from Pseudomonas syringae pv. tomato (strain ATCC BAA-871 / DC3000)
KEGG orthology group: K00602, phosphoribosylaminoimidazolecarboxamide formyltransferase / IMP cyclohydrolase [EC: 2.1.2.3 3.5.4.10] (inferred from 100% identity to psb:Psyr_4406)MetaCyc: 68% identical to bifunctional AICAR transformylase/IMP cyclohydrolase (Escherichia coli K-12 substr. MG1655)
IMP cyclohydrolase. [EC: 3.5.4.10]; Phosphoribosylaminoimidazolecarboxamide formyltransferase. [EC: 3.5.4.10, 2.1.2.3]
Predicted SEED Role
"IMP cyclohydrolase (EC 3.5.4.10) / Phosphoribosylaminoimidazolecarboxamide formyltransferase (EC 2.1.2.3)" in subsystem De Novo Purine Biosynthesis (EC 2.1.2.3, EC 3.5.4.10)
MetaCyc Pathways
- superpathway of histidine, purine, and pyrimidine biosynthesis (44/46 steps found)
- superpathway of purine nucleotides de novo biosynthesis I (21/21 steps found)
- superpathway of purine nucleotides de novo biosynthesis II (24/26 steps found)
- inosine-5'-phosphate biosynthesis I (6/6 steps found)
- inosine-5'-phosphate biosynthesis II (5/5 steps found)
- inosine-5'-phosphate biosynthesis III (5/6 steps found)
KEGG Metabolic Maps
- Biosynthesis of alkaloids derived from histidine and purine
- Biosynthesis of plant hormones
- One carbon pool by folate
- Purine metabolism
Isozymes
No predicted isozymesUse Curated BLAST to search for 2.1.2.3 or 3.5.4.10
Sequence Analysis Tools
PaperBLAST (search for papers about homologs of this protein)
Search CDD (the Conserved Domains Database, which includes COG and superfam)
Compare to protein 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 Q4ZN36 at UniProt or InterPro
Protein Sequence (538 amino acids)
>Psyr_4406 IMP cyclohydrolase / phosphoribosylaminoimidazolecarboxamide formyltransferase (Pseudomonas syringae pv. syringae B728a) MEIEMTDQTTRLPIRRALISVSDKTGILEFARELEALGVEILSTGGTFKLLKDNGVAAVE VADYTGFAEMMDGRVKTLHPMIHGGILGRRGIDDAIMTEHGIKPIDLVAVNLYPFEATVS KPGCDLPTAIENIDIGGPTMVRSAAKNHKDVAIVVNAGDYGQVLESLKAGGLTYAQRFDL MLKAFEHTAAYDGMIANYLGGVDQTAETLSTEGRSQFPRTFNTQFVKAQEMRYGENPHQS AAFYVEAKPAEVGIATATQLQGKELSFNNVADTDAALECVKSFVKPACVIVKHANPCGVA VCPDDEGGIRQAYELAYATDSESAFGGIIAFNRELDAATAKAIVERQFVEVIIAPSVSAE ARAIVASKANVRLLTSGQWSERLPAWDYKRVNGGLLVQSRDIGMITEADLKVVTRRAPTE QEMHDLIFAWKVAKYVKSNAIVYARNRQTVGVGAGQMSRVNSARIAAIKAEHAGLQVQGA VMASDAFFPFRDGIDNAAKVGITAVIQPGGSMRDNEVIAAADEAGIAMVFTGMRHFRH