NCBI Accession #
NP_001234812.1
NCBI GenBank Nucleotide #
NM_001247883.2
NCBI Official Full Name
phytoene synthase 1, chloroplastic
NCBI Official Symbol
Psy1
NCBI Official Synonym Symbols
psy; GTOM5
NCBI Protein Information
phytoene synthase 1, chloroplastic
NCBI Summary
This gene encodes phytoene synthase, the first enzyme in the carotenoid biosynthetic pathway which converts geranylgeranyl diphosphate (GGPP) to phytoene. Its disruption leads to lack of lycopene in fruits causing yellow flesh phenotype. This gene is one of the three phytoene synthase genes found in tomato. phytoene synthase 1 is most expressed in chromoplast-containing tissues, particularly in fruit. Alternative splicing and the use of alternative promoters results in multiple transcript variants.[provided by RefSeq, Dec 2016]
UniProt Synonym Gene Names
GTOM5; PTOM5; TOM5
UniProt Protein Name
Phytoene synthase 1, chloroplastic
UniProt Synonym Protein Names
Fruit-ripening-specific protein pTOM5
UniProt Primary Accession #
P08196
UniProt Secondary Accession #
Q40166
UniProt Related Accession #
P08196
UniProt Comments
Catalyzes the reaction from prephytoene diphosphate to phytoene.