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(a) Arabidopsis (Ar.) thaliana SPT5L contains two distinct but related tandem repeat arrays. (b) SPT5L from Aethionema (Ae.) arabicum, the earliest-diverging member of Brassicaceae, also possesses two distinct tandem repeat arrays. The second array has diverged from Ar. thaliana, while the first array remains similar. Repeat units were aligned with MUSCLE and shaded by similarity to consensus.
