[1] Inst Genet & Biol Mol & Celullaire, F-67404 Illkirch Graffenstaden, France
[2] Inst Natl Sante & Rech Med, U964, F-67404 Illkirch Graffenstaden, France
[3] Ctr Natl Rech Sci, UMR7104, F-67404 Illkirch Graffenstaden, France
[4] Univ Strasbourg, F-67081 Strasbourg, France
[5] Univ Sussex, Sussex Univ, Genome Damage & Stabil Ctr, Sch Life Sci, Brighton BN1 9RH, E Sussex, England