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Exome sequences of toque macaques (Macaca sinica) of Sri Lanka reveal many amino acid changes

Hettiarachchi, N. N.; Osada, N.; Hayakawa, T.; Nakaoka, H.; Saitou, N.; Inoue, I.

2019-09-04 evolutionary biology
10.1101/740761 bioRxiv
Show abstract

Macaques are one of the most widely used model organisms in biomedical research. Macaca mulatta and M. fascicularis are currently being used for toxicology, HIV, diabetes, neuroscience and psychiatric and psychological disorder researches. Many studies have been conducted on M. mulatta and M. fascicularis genomes for this purpose in order to understand the genomic properties of these species. Several M. fascicularis individuals from different geographical locations and also M. mulatta genomes have been sequenced and studied in depth for the purpose of understanding the phylogenetic and evolutionary relationships between various macaque populations. But still a gap in knowledge remains for other macaque populations such as the Sinica group. In this study for the very first time, we sequenced the exome of toque macaques (M. sinica), an endemic island population of Sri Lanka. Here we confirmed that M. sinica and M. thibetana cluster together and are closely related, also the three distinct phylogenetic groupings of fascicularis and sinica. We also found that M. sinica has less number of polymorphisms with respect to the reference genome M. mulatta signifying the smaller and restricted population size of this species.

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