caa a22 4500 463209680 CHVBK 20180405153136.0 cr unu---uuuuu 170326e20071001xx s 000 0 eng 10.1007/s00412-007-0111-y doi (NATIONALLICENCE)springer-10.1007/s00412-007-0111-y Interactions between Mei4, Rec114, and other proteins required for meiotic DNA double-strand break formation in Saccharomyces cerevisiae [Elektronische Daten] [Shohreh Maleki, Matthew Neale, Charanjit Arora, Kiersten Henderson, Scott Keeney] In most sexually reproducing organisms, meiotic recombination is initiated by DNA double-strand breaks (DSBs) formed by the Spo11 protein. In budding yeast, nine other proteins are also required for DSB formation, but the roles of these proteins and the interactions among them are poorly understood. We report further studies of the behaviors of these proteins. Consistent with other studies, we find that Mei4 and Rec114 bind to chromosomes from leptonema through early pachynema. Both proteins showed only limited colocalization with the meiotic cohesin subunit Rec8, suggesting that Mei4 and Rec114 associated preferentially with chromatin loops. Rec114 localization was independent of other DSB factors, but Mei4 localization was strongly dependent on Rec114 and Mer2. Systematic deletion analysis identified protein regions important for a previously described two-hybrid interaction between Mei4 and Rec114. We also report functional characterization of a previously misannotated 5′ coding exon of REC102. Sequences encoded in this exon are essential for DSB formation and for Rec102 interaction with Rec104, Spo11, Rec114, and Mei4. Finally, we also examined genetic requirements for a set of previously described two-hybrid interactions that can be detected only when the reporter strain is induced to enter meiosis. This analysis reveals new functional dependencies for interactions among the DSB proteins. Taken together, these studies support the view that Mei4, Rec114, and Mer2 make up a functional subgroup that is distinct from other subgroups of the DSB proteins: Spo11-Ski8, Rec102-Rec104, and Mre11-Rad50-Xrs2. These studies also suggest that an essential function of Rec102 and Rec104 is to connect Mei4 and Rec114 to Spo11. Springer-Verlag, 2007 Maleki Shohreh Molecular Biology Program, Memorial Sloan-Kettering Cancer Center, 1275 York Ave., 10021, New York, NY, USA aut Neale Matthew Molecular Biology Program, Memorial Sloan-Kettering Cancer Center, 1275 York Ave., 10021, New York, NY, USA aut Arora Charanjit Molecular Biology Program, Memorial Sloan-Kettering Cancer Center, 1275 York Ave., 10021, New York, NY, USA aut Henderson Kiersten Molecular Biology Program, Memorial Sloan-Kettering Cancer Center, 1275 York Ave., 10021, New York, NY, USA aut Keeney Scott Molecular Biology Program, Memorial Sloan-Kettering Cancer Center, 1275 York Ave., 10021, New York, NY, USA aut Chromosoma Springer-Verlag 116/5(2007-10-01), 471-486 0009-5915 116:5<471 2007 116 412 https://doi.org/10.1007/s00412-007-0111-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00412-007-0111-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Maleki Shohreh Molecular Biology Program, Memorial Sloan-Kettering Cancer Center, 1275 York Ave., 10021, New York, NY, USA aut NATIONALLICENCE 700 1- Neale Matthew Molecular Biology Program, Memorial Sloan-Kettering Cancer Center, 1275 York Ave., 10021, New York, NY, USA aut NATIONALLICENCE 700 1- Arora Charanjit Molecular Biology Program, Memorial Sloan-Kettering Cancer Center, 1275 York Ave., 10021, New York, NY, USA aut NATIONALLICENCE 700 1- Henderson Kiersten Molecular Biology Program, Memorial Sloan-Kettering Cancer Center, 1275 York Ave., 10021, New York, NY, USA aut NATIONALLICENCE 700 1- Keeney Scott Molecular Biology Program, Memorial Sloan-Kettering Cancer Center, 1275 York Ave., 10021, New York, NY, USA aut NATIONALLICENCE 773 0- Chromosoma Springer-Verlag 116/5(2007-10-01), 471-486 0009-5915 116:5<471 2007 116 412 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer