Detect mouse TGF-beta RI/ALK-5 in flow cytometry. Although this clone detects human and mouse TGF-beta RI/ALK-5 in Western blots, positive results have not been observed on human TGF-beta RI/ALK-5 in flow cytometry. In direct ELISAs and Western blots, this antibody shows no cross-reactivity with rrMIS RII, rhTGF‑ beta RII, rhTGF‑ beta RIIb, or rhTGF‑ beta RIII.
Monoclonal Rat IgG2A Clone # 141231
Protein A or G purified from hybridoma culture supernatant
S. frugiperda insect ovarian cell line Sf 21-derived recombinant mouse TGF‑ beta RI/ALK-5 Ala21-Glu121 Accession # BAA05023
Supplied in a saline solution containing BSA and Sodium Azide.
Detection of TGF‑ beta RI/ALK‑5 in Mouse Splenocytes by Flow Cytometry.
NSA Mouse splenocytes were stained with (A) Rat Anti-Mouse TGF‑ beta RI/ALK‑5 PE‑conjugated Monoclonal Antibody (Catalog # FAB5871P) or Rat IgG2a isotype control antibody (Catalog # IC006P) and Rat Anti-Mouse CD3 APC-conjugated Monoclonal Antibody (Catalog # FAB4841A). View our protocol for Staining Membrane-associated Proteins.
Preparation and Storage
The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage
Protect from light. Do not freeze.
12 months from date of receipt, 2 to 8 °C as supplied.
Background: TGF-beta RI/ALK-5
Most cell types express three sizes of receptors for TGF-beta. These are designated Type I (53 kDa), Type II (70-85 kDa), and Type III (250-350 kDa). The Type III receptor, a proteoglycan that exists in membrane-bound and soluble forms, binds TGF-beta 1, TGF-beta 2, and TGF-beta 3 but does not appear to be involved in signal transduction. The Type II receptor is a membrane-bound serine/threonine kinase that binds TGF-beta 1 and TGF-beta 3 with high affinity and TGF-beta 2 with a much lower affinity. The Type I receptor, originally known as ALK-5 (Activin receptor-like kinase) is also a membrane-bound serine/threonine kinase that apparently requires the presence of the Type II receptor to bind TGF-beta. Current evidence suggests that signal transduction requires the cytoplasmic domains of both the Type I and Type II receptors.
Miyazono, K. et al. (1994) Adv. In Immunol. 55:181.
Massagùe, J. (1998) Ann. Rev. Biochem. 67:753.
Transforming Growth Factor beta Receptor I
Entrez Gene IDs:
7046 (Human); 21812 (Mouse); 29591 (Rat)
AAT5; activin A receptor type II-like kinase, 53kD; activin A receptor type II-like kinase, 53kDa; Activin receptor-like kinase 5; ACVRLK4; ALK-5; ALK-5ALK5; EC 2.7.11; EC 184.108.40.206; LDS1A; LDS2A; Serine/threonine-protein kinase receptor R4; SKR4; tbetaR-I; TGFB1R1; TGF-beta receptor type I; TGF-beta receptor type-1; TGF-beta RI; TGF-beta type I receptor; TGFbetaRI; TGFBR1; TGF-bRI; TGFR-1; transforming growth factor beta receptor I; transforming growth factor, beta receptor 1; transforming growth factor, beta receptor I (activin A receptor type II-likekinase, 53kD); Transforming growth factor-beta receptor type I
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