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Rearrangement Scenarios Guided by Chromatin Structure

  • Sylvain Pulicani
  • Pijus Simonaitis
  • Eric Rivals
  • Krister M. SwensonEmail author
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10562)

Abstract

Genome architecture can be drastically modified through a succession of large-scale rearrangements. In the quest to infer these rearrangement scenarios, it is often the case that the parsimony principal alone does not impose enough constraints. In this paper we make an initial effort towards computing scenarios that respect chromosome conformation, by using Hi-C data to guide our computations. We confirm the validity of a model – along with optimization problems Minimum Local Scenario and Minimum Local Parsimonious Scenario – developed in previous work that is based on a partition into equivalence classes of the adjacencies between syntenic blocks. To accomplish this we show that the quality of a clustering of the adjacencies based on Hi-C data is directly correlated to the quality of a rearrangement scenario that we compute between Drosophila melanogaster and Drosophila yakuba. We evaluate a simple greedy strategy to choose the next rearrangement based on Hi-C, and motivate the study of the solution space of Minimum Local Parsimonious Scenario.

Keywords

Genome rearrangement Double cut and join DCJ Hi-C Chromatin conformation 

Notes

Acknowledgements

The authors would like to thank the reviewers for their helpful comments. Sylvain PULICANI is funded by NUMEV grant AAP 2014-2-028 and EPIGENMED grant ANR-10-LABX-12-01. This work is partially supported by the IBC (Institut de Biologie Computationnelle) (ANR-11-BINF-0002) and by the Labex NUMEV flaship project GEM.

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Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  • Sylvain Pulicani
    • 1
    • 4
  • Pijus Simonaitis
    • 2
  • Eric Rivals
    • 1
    • 3
  • Krister M. Swenson
    • 1
    • 3
    Email author
  1. 1.LIRMM, CNRS – Université MontpellierMontpellierFrance
  2. 2.ENS LyonLyonFrance
  3. 3.Institut de Biologie Computationnelle (IBC)MontpellierFrance
  4. 4.Institut de Génétique Humaine (IGH)MontpellierFrance

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