【摘 要】
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The homologs of transcription factors c-Fos and c-Jun have been detected in slime mold Physarum polycephalum during progression of the synchronous cell cycle. H
【机 构】
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Institute of Genetics and Cytology, Northeast Normal University, Changchun 130024, China
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The homologs of transcription factors c-Fos and c-Jun have been detected in slime mold Physarum polycephalum during progression of the synchronous cell cycle. Here we demonstrated that cFos-like and c-Jun-like proteins participated in G2/M transition by the regulation of the level of Cyclin B1 protein in P. polycephalum. The study of antibody neutralization revealed that interruption of the functions of c-Fos-like and c-Jun-like proteins resulted in G2/M transition arrest, implicating their functional roles in cell cycle control. When G2/M transition was blocked by histone deacetylase inhibitor trichostatin A, changes in c-Fos- and c-Jun-like protein levels, and hyperacetylation of c-Jun-like protein, were observed. The data suggest that in P. polycephalum, c-Fos- and c-Jun-like proteins may be the key factors in the regulation of histone acetylation-related G2/M transition, involving the coordinated expression and hyperacetylation of these proteins.
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