Structure and Distribution of Centromeric Retrotransposons at Diploid and Allotetraploid Coffea Centromeric and Pericentromeric Regions
نویسندگان
چکیده
منابع مشابه
Structure and Distribution of Centromeric Retrotransposons at Diploid and Allotetraploid Coffea Centromeric and Pericentromeric Regions
Centromeric regions of plants are generally composed of large array of satellites from a specific lineage of Gypsy LTR-retrotransposons, called Centromeric Retrotransposons. Repeated sequences interact with a specific H3 histone, playing a crucial function on kinetochore formation. To study the structure and composition of centromeric regions in the genus Coffea, we annotated and classified Cen...
متن کاملLineage-specific adaptive evolution of the centromeric protein CENH3 in diploid and allotetraploid Oryza species.
Centromeres in eukaryotic species are defined by the presence of a centromere-specific histone H3 variant, CENH3. CENH3 plays a key role in recruiting other centromeric proteins; thus, it is the central component in kinetochore formation and centromere function. The CENH3 proteins in several plant and animal species were found to be under positive selection, which was hypothesized to respond to...
متن کاملEvolution of Centromeric Retrotransposons in Grasses
Centromeric retrotransposons (CRs) constitute a family of plant retroelements, some of which have the ability to target their insertion almost exclusively to the functional centromeres. Our exhaustive analysis of CR family members in four grass genomes revealed not only horizontal transfer (HT) of CR elements between the oryzoid and panicoid grass lineages but also their subsequent recombinatio...
متن کاملStructure and Function of Centromeric and Pericentromeric Heterochromatin in Arabidopsis thaliana
The centromere is a specific chromosomal region where the kinetochore assembles to ensure the faithful segregation of sister chromatids during mitosis and meiosis. Centromeres are defined by a local enrichment of the specific histone variant CenH3 mostly at repetitive satellite sequences. A larger pericentromeric region containing repetitive sequences and transposable elements surrounds the cen...
متن کاملStructure, dynamics, and evolution of centromeric nucleosomes.
Centromeres are defining features of eukaryotic chromosomes, providing sites of attachment for segregation during mitosis and meiosis. The fundamental unit of centromere structure is the centromeric nucleosome, which differs from the conventional nucleosome by the presence of a centromere-specific histone variant (CenH3) in place of canonical H3. We have shown that the CenH3 nucleosome core fou...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Frontiers in Plant Science
سال: 2018
ISSN: 1664-462X
DOI: 10.3389/fpls.2018.00175