CO-OPTED VIRAL MACHINERY. "Also well documented is the co-opted function of a great variety of former retroviral parts such as env, gag, pol, that now play important roles in gene regulation of host organisms. These ‘defectives' that now function as effective regulatory elements share similar features as their viral relatives and in most cases act as ribozymatic structures or in ribozyme-like functions." http://jmcb.oxfordjournals.org/content/early/2011/03/31/jmcb.mjr005.full View in LinkedIn