| We show that SRrp 86 interacts with all of the core SR proteins , as well as a subset of other splicing regulatory proteins , including SAF B , hnRNP G , YB 1 , and p 72 . ^^^ In contrast to previous results that showed activation of SRp 20 by SRrp 86 , we now show that SAF B , hnRNP G , and 9G8 all antagonize the activity of SRrp 86 . ^^^ |