Protein Info for Psyr_0076 in Pseudomonas syringae pv. syringae B728a

Annotation: Xanthine phosphoribosyltransferase

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 XPT_PSEU2: Xanthine phosphoribosyltransferase (xpt) from Pseudomonas syringae pv. syringae (strain B728a)

KEGG orthology group: K03816, xanthine phosphoribosyltransferase [EC: 2.4.2.22] (inferred from 100% identity to psb:Psyr_0076)

Predicted SEED Role

"Xanthine phosphoribosyltransferase (EC 2.4.2.22)" in subsystem Purine conversions (EC 2.4.2.22)

MetaCyc Pathways

xanthine and xanthosine salvage (1/2 steps found)

KEGG Metabolic Maps

Purine metabolism

Isozymes

No predicted isozymes

Use Curated BLAST to search for 2.4.2.22

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 Q500M2 at UniProt or InterPro

Protein Sequence (189 amino acids)

>Psyr_0076 Xanthine phosphoribosyltransferase (Pseudomonas syringae pv. syringae B728a)
MEALHKKIREEGIVLSDQVLKVDAFLNHQIDPALMKEIGDEFARLFADAGVTKIVTIEAS
GIAPAVMAGLNMGVPVIFARKHQSLTLTENLLTASVYSFTKQVESTVAISPRHLSSDDNV
LIIDDFLANGKASQALISIIKQAGATVAGLGIVIEKSFQGGRAELDAQGYRVESLARVES
LAGGVVTFK