Structural similarities between psbA genes from red and brown algae.
The single copy psbA genes from the multicellular red alga Antithamnion spec. and the brown alga Ectocarpus siliculosus have been cloned and sequenced and monocistronic transcripts have been detected. Both genes contain an insertion of 21 bp at the 3' end which was also found in cyanobacteria and which is absent in chloroplasts and the chlorophyll b-containing prochlorophyte Prochlorothrix hollandica. These findings are in agreement with the hypothesis of a polyphyletic origin of plastids. Plastids of red and brown algae appear to be closely related.
Justus Liebig Universität, Institut für Pflanzenphysiologie, Giessen, Federal Republic of Germany.
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Winhauer
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Jäger
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Valentin
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Zetsche
D000595:Amino Acid Sequence; D001426:Bacterial Proteins / Q000235:genetics; D003001:Cloning, Molecular; D000458:Cyanobacteria / Q000235:genetics; D045342:Light-Harvesting Protein Complexes; D008969:Molecular Sequence Data; D000459:Phaeophyceae / Q000235:genetics*; D045322:Photosynthetic Reaction Center Complex Proteins / Q000235:genetics*; D045332:Photosystem II Protein Complex; D010802:Phylogeny; D000461:Rhodophyta / Q000235:genetics*; D012689:Sequence Homology, Nucleic Acid
D001426:Bacterial Proteins; D045342:Light-Harvesting Protein Complexes; D045322:Photosynthetic Reaction Center Complex Proteins; D045332:Photosystem II Protein Complex