Protein Info for Synpcc7942_1984 in Synechococcus elongatus PCC 7942

Name: pys
Annotation: phytoene synthase

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 CRTB_SYNE7: 15-cis-phytoene synthase (crtB) from Synechococcus elongatus (strain PCC 7942)

KEGG orthology group: K02291, phytoene synthase [EC: 2.5.1.32] (inferred from 100% identity to syc:syc2112_c)

MetaCyc: 100% identical to 15-cis-phytoene synthase (Synechococcus elongatus PCC 7942 = FACHB-805)
Phytoene synthase. [EC: 2.5.1.32]

Predicted SEED Role

"Phytoene synthase (EC 2.5.1.32)" in subsystem Carotenoids (EC 2.5.1.32)

MetaCyc Pathways

trans-lycopene biosynthesis II (oxygenic phototrophs and green sulfur bacteria) (6/8 steps found)
neurosporene biosynthesis (2/5 steps found)
trans-lycopene biosynthesis I (2/6 steps found)
β-carotene biosynthesis (engineered) (2/8 steps found)
lycopadiene biosynthesis (1/7 steps found)
superpathway of carotenoid biosynthesis in plants (8/22 steps found)

KEGG Metabolic Maps

Isozymes

No predicted isozymes

Use Curated BLAST to search for 2.5.1.32

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 P37269 at UniProt or InterPro

Protein Sequence (308 amino acids)

>Synpcc7942_1984 phytoene synthase (Synechococcus elongatus PCC 7942)
MLQMIPARPSRALASLSEAYEECRQITARYAKTFYLGTLLMPEAKRQAIWAIYVWCRRTD
ELVDGPQAAQTNFATLDAWERRLERLFAGEPEDDCDVALVDTLARYPLDIQPFRDMIEGQ
RMDLLQNRYSTFEDLYTYCYRVAGTVGLMSQPVMGIESTNSRAPWDPTTPPDPTQEALAL
GIANQLTNILRDVGEDARRGRIYLPQEELAQFNYSEQDLFNGVIDDRWRAFMQFQLDRAR
DYFEQAERGIRQLSHDARWPVWASLMLYREILDVIEQNNYDVFRKRAYVPTWRKLCSLPV
AMLRATVL