Splicing of the triplet periodicity in genes from different species

摘要

We found genes which contain more than one type of the triplet periodicity (TP) during their sequences. We say that these genes contain the triplet periodicity splicing (TPS). The aim of the work is to study such genes and try to understand the nature of the (TPS) phenomenon. The mathematical algorithm for detection of TP splicing of nucleotide sequences has been developed. Gene sequences from KEGG-48 databank were analyzed with a purpose of searching for genes with a TPS. The presence of a triplet periodicity splicing has been shown for 311221 genes (∼8% from the total number of genes in KEGG-48). We showed that the repetitive or low-complexity sequences are not cause of the TPS. We suppose that the TPS cases may indicate fusion of genes or domains with different types of TP. The relationship between TPS and the fusion events in genes is discussed.