Description
Product Characteristics:
Plays a central role in the regulatory network for splicing, controlling the intranuclear distribution of splicing factors in interphase cells and the reorganization of nuclear speckles during mitosis. Hyperphosphorylates RS domain-containing proteins such as SFRS1, SFRS2 and ZRSR2 on serine residues during metaphase but at lower levels during interphase. Locks onto SFRS1 to form a stable complex and processively phosphorylates the RS domain. Appears to mediate HBV core protein phosphorylation which is a prerequisite for pregenomic RNA encapsidation into viral capsids.
Subcellular location: Cytoplasm, Nucleus
Synonyms: Serine/arginine rich protein specic kinase 1, Serine/arginine-rich protein-specic kinase 1, Serine/threonine protein kinase SRPK1, Serine/threonine-protein kinase SRPK1, SFRS protein kinase 1, SR protein kinase 1, SR protein specic kinase 1, SR-protein-specic kinase 1, SRPK1, SRPK1_HUMAN.
Target Information: This gene encodes a serine/arginine protein kinase specific for the SR (serine/arginine-rich domain) family of splicing factors. The protein localizes to the nucleus and the cytoplasm. It is thought to play a role in regulation of both constitutive and alternative splicing by regulating intracellular localization of splicing factors. Alternative splicing of this gene results in multiple transcript variants. Additional alternatively spliced transcript variants have been described for this gene, but their full length nature have not been determined.[provided by RefSeq, Jul 2010]