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Summary: Complex Protein Targeting to Dinoflagellate Plastids
Nicola J. Patron, Ross F. Waller, John M. Archibald and
Patrick J. Keeling*
Canadian Institute for
Advanced Research, Program in
Evolutionary Biology
Department of Botany
University of British Columbia
3529-6270 University Blvd.
Vancouver, BC, Canada V6T
1Z4
Protein trafficking pathways to plastids are directed by N-terminal
targeting peptides. In plants this consists of a relatively simple transit
peptide, while in organisms with secondary plastids (which reside within
the endomembrane system) a signal peptide is appended to the transit
peptide. Despite amino acid compositional differences between organisms,
often due to nucleotide biases, the features of plastid targeting sequences
are generally consistent within species. Dinoflagellate algae deviate from
this trend. We have conducted an expressed sequence tag (EST) survey of
the peridinin-plastid containing dinoflagellate Heterocapsa triquetra to
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