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'Phytochrome' in keywords Facet   Publication Year 1990  [X]
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1Author    MichaelD. Partis, A.F R, R.Udolf GrimmRequires cookie*
 Title    Computer Analysis of Phytochrome Sequences from Five Species: Implications for the Mechanism of Action  
 Abstract    The amino acid sequences o f phytochrom e from A vena sativa, O ryza sativa, Curcurbita pepo, Pisum sativum and Arabidopsis thaliana have been analyzed with a variety o f computer programs, with a view to identifying areas o f the protein which contribute to the properties o f this photoreceptor. A region at the C-terminus has been shown to be amphiphilic, and by ana­ logy with surface-seeking peptides, may be responsible for interaction o f phytochrom e with lipid bilayers. Possible targeting sequences in phytochrom es have been identified, including a series o f four basic residues which correspond to those responsible for transport o f nuclear-located proteins. Sites capable o f post-translational m odification have been found in m onocot sequences, but not in dicot sequences. Areas o f the phytochrom e molecule which are exposed on the surface o f the portein, and which are therefore capable o f interaction with other cellular macromolecules, have been identified. A nalogies with other biliproteins have been used to de­ fine minimum chromophore-protein interactions. Possible enzymic activities associated with phytochromes have been discussed with respect to local amino acid sequence similarity with enzymes. 
  Reference    Z. Naturforsch. 45c, 987—9 (1990); received April 12 1990 
  Published    1990 
  Keywords    Phytochrome, Sequence Analysis, Amphiphilic Peptides, M embrane Interaction, Targeting Sequences 
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 TEI-XML for    default:Reihe_C/45/ZNC-1990-45c-0987.pdf 
 Identifier    ZNC-1990-45c-0987 
 Volume    45