The circumsporozoite gene of the plasmodium cynomolgi complex

M.R. Galinski, D.E. Arnot, A.H. Cochrane, J.W. Barnwell, R.S. Nussenzweig, V. Enea

Research output: Contribution to journalArticlepeer-review


An analysis of the circumsporozoite (CS) genes of six closely related plasmodia is presented. Like other plasmodial antigens, the CS protein contains tandem repeats flanked by conventional nonrepeated sequences. Our analysis shows that the repeats, which encode the immunodominant epitope of the CS protein, diverge more rapidly than the remainder of the gene, and that the maintenance and evolution of the repeats cannot be explained as the result of selection at the protein level. We argue that a mechanism acts directly on the DNA sequence to constrain the internal divergence of the repeats, and as a result promotes their rapid divergence between taxa.
Original languageEnglish
Pages (from-to)311-319
Number of pages9
Issue number2
Publication statusPublished - 30 Jan 1987


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