Assertion: centromere's nucleosome | /r/MadeOf | four single chains
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Source sentences:
text: Although most archaeal nucleosomes are tetramers consisting of four single chains, at least two clades have independently evolved dimeric histone proteins consisting of an N-terminal core that structurally aligns with H3 and H2A and a C-terminal core that aligns with H4 and H2B (Fig.