Conserved molecular structure of the centromeric histone CENH3 in Secale and its phylogenetic relationships.

ABSTRACT: It has been repeatedly demonstrated that the centromere-specific histone H3 (CENH3), a key component of the centromere, shows considerable variability between species within taxa. We determined the molecular structure and phylogenetic relationships of CENH3 in 11 Secale species and subspecies that possess distinct pollination systems and are adapted to a wide range of abiotic and biotic stresses. The rye (Secale cereale) genome encodes two paralogous CENH3 genes, which differ in intron-exon structure and are transcribed into two main forms of the protein, αCENH3 and βCENH3. These two forms differ in size and amino acid substitutions. In contrast to the reported differences in CENH3 structure between species within other taxa, the main forms of this protein in Secale species and subspecies

SUBMITTER: Evtushenko EV 

PROVIDER: S-EPMC5732303 | biostudies-literature | 2017 Dec

REPOSITORIES: biostudies-literature