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A plant photo regulatory protein that exists in two forms that are reversibly interconvertible by LIGHT. In response to light it moves to the CELL NUCLEUS and regulates transcription of target genes. Phytochrome B plays an important role in shade avoidance and mediates plant de-etiolation in red light.
Entry Term(s)
PhyB Phytochrome
Phytochrome B Protein
Registry Numbers
136250-22-1
Public MeSH Note
2006; PHYTOCHROME B was indexed under PHOTORECEPTORS & PHYTOCHROME & TRANSCRIPTION FACTORS 1991-2005, & under PLANT PROTEINS 1991-2004
A plant photo regulatory protein that exists in two forms that are reversibly interconvertible by LIGHT. In response to light it moves to the CELL NUCLEUS and regulates transcription of target genes. Phytochrome B plays an important role in shade avoidance and mediates plant de-etiolation in red light.