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.
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Informations pour la commande
Nom du produit | Ref. Catalogue | COND. | Prix HT | QTÉ | Favoris | |
Anticorps CstF-64 (B-3) | sc-166647 | 200 µg/ml | $316.00 | |||
CstF-64 (B-3): m-IgG Fc BP-HRP Kit | sc-537514 | 200 µg Ab; 10 µg BP | $354.00 | |||
CstF-64 (B-3): m-IgGκ BP-HRP Kit | sc-534801 | 200 µg Ab; 40 µg BP | $354.00 | |||
CstF-64 (B-3): m-IgG1 BP-HRP Kit | sc-545208 | 200 µg Ab; 20 µg BP | $354.00 | |||
CstF-64 (B-3) peptide neutralisant | sc-166647 P | 100 µg/0.5 ml | $68.00 |