Mer2 (Rec107) forms part of a complex that is required for meiotic double strand DNA break formation. Mer2 increases in abundance and is phosphorylated during the prophase phase of cell division [1]. Blocking double strand break formation results in delayed dephosphorylation and dissociation of Mer2 from the chromosome [1].

1: S. cerevisiae Mer2, Mei4 and Rec114 Form a Complex Required for Meiotic Double-Strand Break Formation. Li J, Hooker GW, Roeder GS; Genetics. 2006; [Epub ahead of print] PMID:16783010