Abstract
Peridinin-chlorophylla-protein (PCP) complexes isolated from three strains of the symbiotic dinoflagellateSymbiodinium microadriaticumFreudenthal have been found to occur in multiple isoelectric forms, but the pattern of isoelectric forms of PCP is characteristic of each strain. Analysis of PCP after growth of the algae fromTridacna maxima, Cassiopeia frondosa,andRhodactis sancti-thomaeat 22, 57 and 157 μmol m-2s-1demonstrated that the patterns remained unchanged. Determination of the native molecular mass, quaternary structure and amino acid composition of two isoelectric forms of PCP derived from algae fromAnthopleura elegantissimaandRhodactis sancti-thomaeshowed similar native molecular masses and amino acid composition, but while PCP from the algae from A.elegantissimais dimeric, PCP from algae fromR. sancti-thomaeis monomeric. The potential use of PCP as a taxonomic tool in dinoflagellate systematics and the evolution of multiple forms of these pigment-protein complexes are discussed.
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Schedule a callMore From: Proceedings of the Royal Society of London. Series B. Biological Sciences
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