NCBI Accession #
XP_015631282.1
NCBI GenBank Nucleotide #
XM_015775796.1
NCBI Official Full Name
phytochrome B isoform X2
NCBI Official Symbol
LOC4332623
NCBI Official Synonym Symbols
PhyB; PHYB1
NCBI Protein Information
phytochrome B
UniProt Synonym Gene Names
PHYB1
UniProt Protein Name
Phytochrome B
UniProt Primary Accession #
Q10MG9
UniProt Secondary Accession #
P25764; Q84LN8
UniProt Related Accession #
Q10MG9
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.