| http://www.w3.org/ns/prov#value | - so been implicated in some systems, for example signaling by the intact heterotrimer in yeast, the possibility of varying extents of heterotrimer dissociation in mammalian cells (Klein et al, 2000; Frank et al, 2005; Digby et al, 2008), and a suggestion that G?? in Arabidopsis exists primarily in a GTP-bound, dissociated state (Johnston et al, 2007; Temple and Jones, 2007).
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