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A Novel Chromophore Selectively Modifies the Spectral Properties of One of the Two Stable States of the Plant Photoreceptor Phytochrome
Author(s) -
Lindner Ingo,
Knipp Bernd,
Braslavsky Silvia E.,
Gärtner Wolfgang,
Schaffner Kurt
Publication year - 1998
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/(sici)1521-3773(19980803)37:13/14<1843::aid-anie1843>3.0.co;2-w
Subject(s) - phytochrome , hypsochromic shift , chromophore , chemistry , phytochrome a , phycocyanobilin , photochemistry , biophysics , biochemistry , fluorescence , botany , arabidopsis , biology , red light , optics , physics , bacteria , cyanobacteria , genetics , phycocyanin , gene , mutant
An efficient synthetic access to phytochromobilin (1) , the chromophore of the plant photoreceptor phytochrome, and to its constitutional isomer “iso”‐phytochromobilin ( 2 ) is reported. Both tetrapyrroles are assembled spontaneously with a recombinant apoprotein to form photochemically functional phytochromes. Interestingly, in the case of 2 the absorption maximum of the physiologically active phytochrome state selectively undergoes a hypsochromic shift (P fr ; fr=far red).