What similarity between human and fission yeast proteins is required for orthology?

Guy Lenaers1*, Laetitia Pelloquin1, Aurélien Olichon1, Laurent J. Emorine1, Emmanuelle Guillou1, Cécile Delettre2, Christian P. Hamel2, Bernard Ducommun1 and Pascale Belenguer1 1 LBCMCP, CNRS UMR5088, IFR 109, Université Paul Sabatier, Bât. 4R3-B1, 118 Route de Narbonne, 31062 Toulouse Cedex, France 2 INSERM U254, Laboratoire de Neurobiologie de l’Audition, 71 Rue de Navacelles, 34090 Montpellier, France