Identification of Drosophila centromere associated proteins by quantitative affinity purification-mass spectrometry.

ABSTRACT: Centromeres of higher eukaryotes are epigenetically defined by the centromere specific histone H3 variant CENP-A(CID). CENP-A(CID) builds the foundation for the assembly of a large network of proteins. In contrast to mammalian systems, the protein composition of Drosophila centromeres has not been comprehensively investigated. Here we describe the proteome of Drosophila melanogaster centromeres as analyzed by quantitative affinity purification-mass spectrometry (AP-MS). The AP-MS input chromatin material was prepared from D. melanogaster cell lines expressing CENP-A(CID) or H3.3 fused to EGFP as baits. Centromere chromatin enriched proteins were identified based on their relative abundance in CENP-A(CID)-GFP compared to H3.3-GFP or mock affinity-purifications. The analysis yielded 86 prote

SUBMITTER: Barth TK 

PROVIDER: S-EPMC4536286 | biostudies-literature | 2015 Sep

REPOSITORIES: biostudies-literature