| CIR was found to interact with U2AF35 through the BA domain , with SC 35 and SF2 / ASF through the RS domain , and with PAP 1 outside the BA domain in vivo and in vitro . 0.84992324^^^ CIR was found to be colocalized with SC 35 and PAP 1 in nuclear speckles . 0.74173699^^^ |