Avdeyev P, Jiang S, Alekseyev MA. Linearization of Median Genomes Under the Double-Cut-and-Join-Indel Model.
Evol Bioinform Online 2019;
15:1176934318820534. [PMID:
31217687 PMCID:
PMC6557028 DOI:
10.1177/1176934318820534]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Accepted: 11/27/2018] [Indexed: 11/17/2022] Open
Abstract
Reconstruction of the median genome consisting of linear chromosomes from three given genomes is known to be intractable. There exist efficient methods for solving a relaxed version of this problem, where the median genome is allowed to have circular chromosomes. We propose a method for construction of an approximate solution to the original problem from a solution to the relaxed problem and prove a bound on its approximation error. Our method also provides insights into the combinatorial structure of genome transformations with respect to appearance of circular chromosomes.
Collapse