Fig. 2From: The origin and evolution of a two-component system of paralogous genes encoding the centromeric histone CENH3 in cerealsA multiple alignment of the amino acid sequences of CENH3 proteins using the MUSCLE program [40]For convenience, the alpha and beta forms are grouped into two separate blocks: 1–26 (αCENH3) and 27–45 (βCENH3). Amino acid residues identical in all species are shown as white letters on the black background.Back to article page