STOP or not: genome-wide profiling of reassigned stop codons in ciliates.Bifunctional stop codons that have both translation and termination functions in the same species are important for understanding the evolution and function of genetic codes in living organisms. 
STOP or not
We further propose a stop codon reassignment quantification method (stopCR) that can identify bifunctional codons and measure their frequencies in various eukaryotic organisms. 
stopCR