Jp. Raffin et Mt. Thebault, AMPLIFICATION OF MYOADENYLATE DEAMINASE DURING EVOLUTION - A COMPARATIVE-STUDY, Comptes rendus de l'Academie des sciences. Serie 3, Sciences de la vie, 317(5), 1994, pp. 386-391
Myoadenylate deaminase activity was measured, by using a specific assa
y technique, in a wide range of animal species, including four inverte
brates, one cyclostom, 13 chondrosteans, one teleost and one mammal. T
he results are discussed considering the known genetic events that hav
e lead to the appearance of the higher vertebrates myoadenylate deamin
ase molecular form. It is proposed that, during the extensive gene dup
lication that occurred in the beginning of vertebrate evolution, genet
ic modification of the myoadenylate deaminase molecule took place in a
t least two different taxa : the one that evolved to rajiform elasmobr
anch fishes and the other to the land vertebrates.