Key points are not available for this paper at this time.
Aron L. Silverstone, Hou-Sung Jung, Alyssa Dill, Hiroshi Kawaide, Yuji Kamiya, Tai-ping Sun, Repressing a Repressor: Gibberellin-Induced Rapid Reduction of the RGA Protein in Arabidopsis, The Plant Cell, Vol. 13, No. 7 (Jul., 2001), pp. 1555-1565
Silverstone et al. (2001) studied this question.