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引用次数: 11
海胆发育过程中的组蛋白变异
海胆基因组包含几个组蛋白基因家族,其表达受发育和组织特异性方式的调节。卵裂期(CS)组蛋白亚型在未受精卵和胚胎中合成,直到第三个细胞周期。早期(E)亚型是在胚胎发育过程中从2-4个细胞阶段到囊胚阶段合成的。从间充质囊胚阶段到成虫阶段产生的唯一变体是Late (L)亚型。此外,两个“精子特异性”组蛋白基因(SpH1和SpH2B)仅在睾丸中表达,其相应产物被纳入精子染色质中。在这篇综述中,我将详细描述各种组蛋白亚型的特征,特别关注Sp变体,并讨论这些组蛋白变体在海胆发育过程中存在的可能意义。
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