Species: | Rabbit |
Applications: | WB IHC IF |
Immunogen Range: | KLH conjugated synthetic phosphopeptide derived from human CstF64 around the phosphorylation site of Ser83 |
Clonality: | Polyclonal Antibody |
Isotype: | IgG |
GENE ID: | 1478 |
Swiss Prot: | |
Synonyms: | p-CstF-64 Ser83, p-CstF-64 S83, CstF64 Ser83, CstF64 S83, CSTF2T, CF1 64 kDa subunit, tau variant, Cleavage stimulation factor 64 kDa subunit, tau variant, CSTF 64 kDa subunit, tau variant, KIAA0689, TauCstF64, CSTF2_HUMAN. |
Purification: | Purified by Protein A. |
Storage: | Aqueous buffered solution containing 100ug/ml BSA, 50% glycerol and 0.09% sodium azide. Store at -20℃ for 12 months |
Background: | Polyadenylation of mRNA precursors is a two-step reaction that requires multiple protein factors. The first step, endonucleolytic cleavage of polyadenylation substrates, requires CstF (cleavage stimulation factor), a heterotrimer that is composed of three distinct subunits. CstF-64 contains an RNA binding domain and is responsible for the RNA binding activity of CstF. CstF-64 is expressed in all somatic cells and in pre- and postmeiotic, but not meiotic, germ cells. However, a large variant of CstF-64, called t CstF-64, is abundantly expressed in meiotic and postmeiotic cells in the testis and to a lesser extent in the brain, and promotes the germ cell pattern of polyadenylation. The gene encoding CstF-64 (designated CSTF2) maps to the X chromosome, whereas t CstF-64 is encoded by an autosomal gene. The increase in CstF-64 concentration during B cell activation switches IgM heavy chain mRNA expression from membrane-bound to secreted forms, suggesting that CstF-64 plays a key role in regulating IgM heavy chain expression during B cell differentiation. |
Caculated MW: | / |
Observed MW: | Refer to Figures |
Applications: |
WB 1:100-1:1000 IHC 1:100-1:500 IF 1:50-1:200 |
Reacitivity: | Human, Mouse, Rat |