ATP synthase F1 subunits recruited to centromeres by CENP-A are required for male meiosis.

ABSTRACT: The histone H3 variant CENP-A epigenetically defines the centromere and is critical for chromosome segregation. Here we report an interaction between CENP-A and subunits of the mitochondrial ATP synthase complex in the germline of male Drosophila. Furthermore, we report that knockdown of CENP-A, as well as subunits ATPsyn-?, -?like (a testis-specific paralogue of ATPsyn-?) and -? disrupts sister centromere cohesion in meiotic prophase I. We find that this disruption is likely independent of reduced ATP levels. We identify that ATPsyn-? and -?like localise to meiotic centromeres and that this localisation is dependent on the presence of CENP-A. We show that ATPsyn-? directly interacts with the N-terminus of CENP-A in vitro and that truncation of its N terminus perturbs sister centromere cohesion in prophase I. We propose that the CENP-A N-terminus recruits ATPsyn-? and -?like to centromeres to promote sister centromere cohesion in a nuclear function that is independent of oxidative phosphorylation.

SUBMITTER: Collins CM 

PROVIDER: S-EPMC6045659 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature