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The phytochrome gene (phyCer) of the moss Ceratodon purpureus was isolated and characterized. phyCer is composed of three coding exons: exon I of 2035 bp, exon II of 300 bp and exon III of 1574 bp. The deduced polypeptide encoded by exon I and II exhibits substantial sequence homology to the
In the moss Ceratodon purpureus, phytochrome is encoded by two different genes, CpPHY1 and CpPHY2. CpPHY2 represents a conventional type phytochrome characterized by a C-terminus homologous to the catalytic domain of bacterial sensor histidine kinases, whereas CpPHY1 represents an unique
Phytochrome, the best characterised plant photoreceptor, is encoded by a small multigene family within the plant kingdom. The different phytochrome types are composed of a conserved light-sensing chromophore domain of about 80 kDa and a less-conserved C-terminal domain of about 50 kDa. The
In the moss Ceratodon purpureus a phytochrome gene encodes a phytochrome type (PhyCer) which has a C-terminal domain homologous to the catalytic domain of eukaryotic protein kinases (PKs). PhyCer exhibits sequence conservation to serine/threonine as well to tyrosine kinases. Since PhyCer is