Human TGF-beta  RII Isoform 2 Antibody

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Product Details
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Human TGF-beta  RII Isoform 2 Antibody Summary

Species Reactivity
Detects human TGF‑ beta  RII Isoform 2  in direct ELISAs and Western blots. In direct ELISAs and Western blots, less than 2% cross-reactivity with recombinant human (rh) TGF-beta RII, recombinant mouse (rm) TGF-beta RII, rmTGF-beta RI, and rhTGF-beta RIII is observed.
Polyclonal Goat IgG
Antigen Affinity-purified
Mouse myeloma cell line NS0-derived recombinant human TGF‑ beta  RII Isoform 2
Accession # NP_001020018
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.
Endotoxin Level
<0.10 EU per 1 μg of the antibody by the LAL method.


Recommended Concentration
Western Blot
0.1 µg/mL
Recombinant Human TGF‑ beta RII Isoform 2 Fc Chimera (Catalog # 1003-RT)

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

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Preparation and Storage

Reconstitute at 0.2 mg/mL in sterile PBS.
Reconstitution Buffer Available
Reconstitution Buffer 1 (PBS)
Catalog #
Size / Price
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: TGF-beta RII

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, and appears to participate in both TGF-beta dependent and independent cellular signaling. The Type II receptor, by contrast, 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 is also a membrane-bound serine/threonine kinase that requires the presence of the Type II receptor to bind TGF-beta. Evidence suggests that signal transduction requires the cytoplasmic domains of both the Type I and Type II receptors. TGF-beta receptor II isoform 2 (also TGF-beta RII isoform A) is an alternatively spliced variant of the standard Type II TGF-beta receptor (or TGF-beta RII isoform 1) that possesses a 27 amino acid substitution for Val10 near the N-terminus of the mature protein. Both TGF-beta RII and TGF-beta RII isoform 2 bind TGF-beta 1 and TGF-beta 3 with high affinity. However, only TGF-beta RII isoform 2 also binds TGF-beta 2 with high affinity in the absence of TGF-beta RIII. While TGF-beta RII is widely expressed on cells, TGF-beta RII isoform 2 shows distinct expression pattern mainly associated with bone-related cells, such as osteoblasts and mesenchymal precursor cells. TGF-beta RII isoform 2 may play an important role in TGF-beta 2 binding and signaling in cells lacking TGF-beta RIII. Mouse also expresses a TGF-beta RII isoform 2, and over aa 23-184 of this isoform, human and mouse share 80% aa sequence identity.

Long Name
Transforming Growth Factor beta Receptor II
Entrez Gene IDs
7048 (Human); 21813 (Mouse)
Alternate Names
AAT3; EC 2.7.11; EC; FAA3; HNPCC6; LDS1B; LDS2B; MFS2; RIIC; TAAD2; tbetaR-II; TGF-beta receptor type II; TGF-beta receptor type IIB; TGF-beta receptor type-2; TGF-beta RII; TGF-beta type II receptor; TGFbetaRII; TGFbeta-RII; TGFBR2; TGF-bRII; TGFR-2; transforming growth factor beta receptor type IIC; transforming growth factor, beta receptor II (70/80kDa) isoform 1; transforming growth factor, beta receptor II (70/80kDa) isoform 2; transforming growth factor, beta receptor II (70/80kDa); transforming growth factor, beta receptor II (70-80kD); Transforming growth factor-beta receptor type II

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Isotype Controls

Reconstitution Buffers

Secondary Antibodies

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