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Plant Cenh3 Evolution Is Congruent With The Phylogeny Of Plant Species
[Full Text]
AUTHOR(S)
Archana Pal, Vishal Singh Negi
KEYWORDS
CenH3, histones, centromere, plants, kinetochore, Bioconductor, Biomart, Ensembl.
ABSTRACT
Centromere plays a major role in the faithful segregation of chromosomes during cell division. This task is achieved by a large protein complex called kinetochore, which is made of several proteins. The centromere is characterized by a histone H3 variant popularly called CENP-A in humans and CenH3 in plants. CenH3 is one of the most rapidly evolving proteins, which is a paradoxical situation for a protein involved in essential biological function. Additionally, many of the kinetochore proteins found in mammals are missing or have extremely high divergence in plants. Therefore, understanding the phylogeny of CenH3 in plants is important for studying kinetochore assembly in plants. In this study, we utilized a computational approach using R and Bioconductor for a comprehensive study of plant CenH3. We found five major clades of plant CenH3 among which the N-terminus is highly divergent and the conserved regions were clustered in three domains. This study has revealed the detailed analyses of plant CenH3 and it will be useful for further investigation aiming at the determination of precise biological functions including its interaction with other proteins that help in the maintenance of centromere structure and function in plants.
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