Phytochrome ancestry: sensors of bilins and light.

J Clark Lagarias, Beronda L Montgomery

Journal: Trends in plant science 2002;7(8):357-66

PMID: 12167331

Full Text on Elsevier Science View on PubMed

Abstract

Phytochromes were long thought to have evolved in non-motile photosynthetic eukaryotes for adaptation to unfavorable light environments, but recent studies suggest that phytochromes evolved billions of years earlier from a tetrapyrrole sensor protein progenitor. These investigations have identified phytochromes and phytochrome-related proteins in photosynthetic bacteria (cyanobacteria and purple bacteria), nonphotosynthetic eubacteria and fungi - an observation that has opened new avenues for investigating the origins, molecular evolution and biochemical functions of this ecologically important family of plant photoreceptors.

Address: Dept of Biology, Indiana University, Bloomington, IN 47405, USA.

DOI: 10.1016/s1360-1385(02)02304-x

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MeSH Terms: Bacterial Proteins, Bile Pigments, Eukaryotic Cells, Evolution, Molecular, Light, Models, Molecular, Photosynthesis, Phylogeny, Phytochrome, Prokaryotic Cells, Protein Structure, Tertiary