... 2877 The domains carrying the opposing activities in adenylyltransferase are separated by a central regulatory domain Paula Clancy1, Yibin Xu1,2, Wally C. van Heeswijk1,3, Subhash G. Vasudevan1,4and ... C-terminal domains in these types ofproteins [10]. Together, these observations suggestedthat the opposing activities of the two domains may be separated by a third central domain, and that completeAT ... by separate domains within adenylyltransferase. The N-terminal domain carries the deadenylylation activity, and the C-terminal domain carries the adenylyla-tion activity [Jaggi R, van Heeswijk...