10.1371/journal.pone.0180994.g004 Ruoxi W. Wang Ruoxi W. Wang Cheng-Sheng Lee Cheng-Sheng Lee James E. Haber James E. Haber Competition between interchromosomal and intrachromosomal donors. Public Library of Science 2017 chromosome conformation capture-based studies donor sequence ectopic intrachromosomal donor intrachromosomal repair position 625 kb CEN 2 spindle pole body centromere 813- kb chromosome 2 CEN 2 tethering DSB constraint position 238 kb 2017-07-11 17:37:00 Figure https://plos.figshare.com/articles/figure/Competition_between_interchromosomal_and_intrachromosomal_donors_/5196604 <p>(A) Scheme for DSB repair in diploid strains. The DSB could be repaired by gene conversion using an ectopic intrachromosomal <i>LEU2</i> sequence, an allelic <i>leu2</i>-<i>Kpn</i>I sequence, or the homologous sequence outside of the <i>leu2</i>-<i>Kpn</i>I. Each outcome is revealed by <i>Kpn</i>I-digestion of the indicated PCR fragments, yielding respectively 3, 2 and 1 fragments, as illustrated in (C). (B) Usage of ectopic and allelic donors assessed from 31 colonies of individual recombinants in YWW210 (58% intrachromosomal donor usage assessed in pooled cells from <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0180994#pone.0180994.s005" target="_blank">S5 Fig</a> and 85% viability in haploid strain from <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0180994#pone.0180994.g001" target="_blank">Fig 1</a>). (C) Three types of possible outcomes for individual repair events revealed by <i>Kpn</i>I-digestion: (1) repair from intrachromosomal <i>LEU2</i>; (2) allelic repair without <i>URA3</i> co-conversion; (3) allelic repair with <i>URA3</i> co-conversion.</p>