Identification of a cDNA Coding for the SerH3 Surface Protein of Tetrahymena thermophila

Abstract
We have identified a Tetrahymena thermophila cDNA-containing plasmid (pC6) which hybridizes to a 1.47-kB RNA whose changes in cellular concentration parallel the changes in systolic rate of a major cell surface protein. From a molecular and genetic analysis of strains expressing the gene (SerH3) encoding this protein, and of strains expressing immunologically distinct alleles of this gene, we conclude that pC6 encodes a pattern of the SerH3 allele.