NCBI Accession #
NP_001238286.1
NCBI GenBank Nucleotide #
NM_001251357.1
NCBI Official Full Name
phytochrome A
NCBI Official Symbol
PHYA
NCBI Official Synonym Symbols
PhyA1; GmphyA1
NCBI Protein Information
phytochrome A
UniProt Protein Name
Phytochrome A
UniProt Primary Accession #
P42500
UniProt Related Accession #
P42500
UniProt Comments
Regulatory photoreceptor which exists in two forms that are reversibly interconvertible by light: the Pr form that absorbs maximally in the red region of the spectrum and the Pfr form that absorbs maximally in the far-red region. Photoconversion of Pr to Pfr induces an array of morphogenic responses, whereas reconversion of Pfr to Pr cancels the induction of those responses. Pfr controls the expression of a number of nuclear genes including those encoding the small subunit of ribulose-bisphosphate carboxylase, chlorophyll A/B binding protein, protochlorophyllide reductase, rRNA, etc. It also controls the expression of its own gene(s) in a negative feedback fashion.