SRPK1 were distributed in the IGc and PGs of nucleus, DFC area of nucleolus under the electromicroscope.

• 电镜下SRPK1或SRPK1类蛋白主要分布在染色质间颗粒簇 (IGc)和染色质周边纤维(PGs)上 ,核仁内主要存在于DFC区。