title: Phytochrome, a photochromic sensor.
mesh_terms: D001654:Bile Pigments; D002463:Cell Membrane Permeability; D055598:Chemical Phenomena; D002621:Chemistry; D000242:Cyclic AMP / Q000502:physiology; D003624:Darkness; D004463:Ecology; D004790:Enzyme Induction; D004794:Enzyme Repression; D005453:Fluorescence; D005796:Genes; D008027:Light; D008564:Membrane Potentials; D008854:Microscopy, Electron; D008968:Molecular Conformation; D008970:Molecular Weight; D010788:Photosynthesis; D010834:Phytochrome / Q000096:biosynthesis / Q000378:metabolism / Q000494:pharmacology; D010860:Pigments, Biological / Q000378:metabolism; D010940:Plant Proteins; D014176:Protein Biosynthesis; D012243:Rhodopsin / Q000502:physiology; D013053:Spectrophotometry; D014158:Transcription, Genetic
chemical_list: D001654:Bile Pigments; D010860:Pigments, Biological; D010940:Plant Proteins; D010834:Phytochrome; D012243:Rhodopsin; D000242:Cyclic AMP