'SPKK' motifs prefer to bind to DNA at A/T-rich sites.


The termini of histone H1 and sea urchin spermatogenous H1 and H2B, which are essential for correct chromatin condensation, often contain repeats of the sequence SPK(R)K(R). A special type of beta-turn structural motif has been proposed for this sequence, and it has been shown that a segment of the sea urchin sperm H1 N terminus, which has six repeats of… (More)


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