Fig. 5: Chimeric origin of the NSL1 and Borealin genes in Cha. luteum. | Nature Communications

Fig. 5: Chimeric origin of the NSL1 and Borealin genes in Cha. luteum.

From: Kinetochore mutations and histone phosphorylation pattern changes accompany holo- and macro-monocentromere evolution

Fig. 5: Chimeric origin of the NSL1 and Borealin genes in Cha. luteum.The alt text for this image may have been generated using AI.

A Comparison of the secondary protein structure of the intact and chimeric NSL1 proteins. NSL1 and BORCS6 proteins are shown in different colors to indicate the origin of the two parts in the chimeric NSL1. B Comparison of the secondary structure of Borealin proteins in three Melanthiaceae species, Phoenix dactylifera, and Arabidopsis thaliana. Although the structure is well conserved in all the species, the first α-helix is significantly shorter in Cha. luteum and Chi. japonica, which is due to the N-terminus of Borealin being replaced by the N-terminal fragment of ribosomal protein S17 (red). α-helices and β-sheets are shown as beige wavy lines and green arrows, respectively.

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