In eukaryotic cells, the fundamental unit of chromatin is nucleosome, which is composed of a histone octamer with two copies of HA, HB, H and H and base pairs of DNA.
真核细胞中，核小体是染色质的基本单位，它由两个拷贝HA、HB、H和H所组成的核心组蛋白八聚体，及缠绕于其上的bpDNA构成。
Histone H3 along with H2A, H2B, and H4 form the eukaryotic nucleosome octamer core.
组蛋白 H3与H2A，H2B，H4 共同构成了真核生物核小体的八聚体核心。
Histone H3 is one of the four histones, along with H2A, H2B, and H4, which form the eukaryotic nucleosome octamer core.
组蛋白H3与其他类型的组蛋白分子H2A，H2B，H4共同构成了真核生物核小体的八聚体核心。
Histone H3 is one of the four histones, along with H2A, H2B, and H4, which form the eukaryotic nucleosome octamer core.
组蛋白H3与其他类型的组蛋白分子H2A，H2B，H4共同构成了真核生物核小体的八聚体核心。
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