Evolution of the 2'-5'-oligoadenylate synthetase family in Eukaryotes and BacteriaKjaer, Karina Hansen; Poulsen, Jesper Buchhave; Reintamm, Tõnu; Saby, Emilie; Martesen, Pia Moeller; Kelve, Merike; Justesen, JustJournal of molecular evolution2009 / 6, p. 612-624 https://www.proquest.com/openview/0fe0284ce650961a365d42300b2e597f/1?cbl=54027&pq-origsite=gscholar&parentSessionId=dz9k38w4a1zaAkRvUbi61rwVTwqEtV4qKOMQV6XmYsw%3D

2'-phosphodiedterase and 2', 5'-oligoadenylate synthetase activities in the lowest metazoans, sponge [porifera]Saby, Emilie; Poulsen, Jesper Buchhave; Justesen, Just; Kelve, Merike; Uriz, Maria JesusBiochimie2009 / 11/12, p. 1531-1534 https://www.sciencedirect.com/science/article/pii/S0300908409002211