Differential expression of histone H3 genes and selective association of the variant H3.7 with a specific sequence class in Stylonychia macronuclear development.

ABSTRACT:

Background

Regulation of chromatin structure involves deposition of selective histone variants into nucleosome arrays. Numerous histone H3 variants become differentially expressed by individual nanochromosomes in the course of macronuclear differentiation in the spirotrichous ciliate Stylonychia lemnae. Their biological relevance remains to be elucidated.

Results

We show that the differential assembly of H3 variants into chromatin is strongly correlated with the functional separation of chromatin structures in developing macronuclei during sexual reproduction in Stylonychia, thus probably determining the fate of specific sequences. Specific H3 variants approximately 15 kDa or 20 kDa in length are selectively targeted by post-translational modifications. We found that only th

SUBMITTER: Forcob S 

PROVIDER: S-EPMC3918171 | biostudies-literature | 2014 Feb

REPOSITORIES: biostudies-literature