After search, choose a molecule or a kind of categories listed in the left to narrow down your filter. If you have any problems, please contact us!
Text Size:AAA

Human SRPK1 Protein (His & GST Tag)

DatasheetSpecific ReferencesReviewsRelated ProductsProtocols
SRPK1Protein Product Information
Synonym:RP3-422H11.1, SFRSK1
Protein Construction:A DNA sequence encoding the human SRPK1 (AAH38292.1) (Glu 2-Ser 655) was fused with the N-terminal polyhistidine-tagged GST tag at the N-terminus.
Expressed Host:Baculovirus-Insect Cells
Form & Shipping:In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature.
Bulk packages of recombinant proteins are provided as frozen liquid. They are shipped out with blue ice unless customers require otherwise.
SRPK1Protein QC Testing
Purity:> 80 % as determined by SDS-PAGE
Bio-Activity:No Kinase Activity
Endotoxin:< 1.0 EU per μg of the protein as determined by the LAL method
Stability:Samples are stable for up to twelve months from date of receipt at -70℃
Predicted N Terminal:Met
Molecule Mass:The recombinant human SRPK1/GST chimera consists of 892 amino acids and has a calculated molecular mass of 102 kDa. It migrates as an approximately 120 kDa band in SDS-PAGE under reducing conditions.
Formulation:Lyophilized from sterile 20mM Tris, 500mM NaCl, 2mM GSH, 10% gly, pH 7.4
1. Normally 5 % - 8 % trehalose and mannitol are added as protectants before lyophilization. Specific concentrations are included in the hardcopy of COA.
2. Please contact us for any concerns or special requirements.
SRPK1Protein Usage Guide
Storage:Store it under sterile conditions at -20℃ to -80℃. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.
Reconstitution:A hardcopy of COA with reconstitution instruction is sent along with the products. Please refer to it for detailed information.

Serine / threonine-protein kinase SRPK1, also known as SFRS protein kinase 1, Serine/arginine-rich protein-specific kinase 1, SR-protein-specific kinase 1 and SRPK1, is a cytoplasm and nucleus protein which belongs to the protein kinase superfamily and CMGC Ser/Thr protein kinase family. Isoform 2 of SRPK1 is predominantly expressed in the testis but is also present at lower levels in heart, ovary, small intestine, liver, kidney, pancreas and skeletal muscle. Isoform 1 of SRPK1 is only seen in the testis, at lower levels than isoform 2. SRPK1 hyperphosphorylates RS domain-containing proteins such as SFRS1, SFRS2 and ZRSR2 on serine residues during metaphase but at lower levels during interphase. SRPK1 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. SRPK1 locks onto SFRS1 to form a stable complex and processively phosphorylates the RS domain. SRPK1 appears to mediate HBV core protein phosphorylation which is a prerequisite for pregenomic RNA encapsidation into viral capsids.

  • Ngo J.C.K. et al., 2005, Mol. Cell 20:77-89.
  • Krishnakumar,S. et al., 2008, Pediatr Blood Cancer 50 (2):402-6.
  • Ma,C.T. et al., 2009, J Mol Biol  390 (4):618-34.
  • Souki S.K. et al., 2009, J. Virol. 83:8970-8975.
  • Choudhary C. et al., 2009, Science 325:834-840. 
  • Related Products
    Product nameProduct name