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Human TGFBR1 Protein 4872



  • Expression: HEK293
  • Binding assay: Yes (SPR)
  • Amino Acid Range: Leu34-Glu125
SKU: 4872parent Categories: , Tags: , , ,
Weight1 lbs
Dimensions9 × 5 × 2 in


express system


product tag



> 95% as determined by Tris-Bis PAGE;> 95% as determined by HPLC


transforming growth factor beta receptor 1 (TGFBR1), a key stimulator of tumor proliferation and metastasis, was a direct target of miR‑98‑5p. miR‑98‑5p overexpression resulted in the downregulation of TGFBR1 and the suppression of the viability, proliferation, migration and invasion of A549 and H1299 cells.

molecular weight

The protein has a predicted MW of 38.2 kDa. Due to glycosylation, the protein migrates to 50-55 kDa based on Tris-Bis PAGE result.

available size

100 µg, 500 µg


Less than 1EU per μg by the LAL method.

Human TGFBR1 Protein 4872

Size and concentration
100, 500µg and lyophilized
Storage Instructions
Valid for 12 months from date of receipt when stored at -80°C. Recommend to aliquot the protein into smaller quantities for optimal storage. Please minimize freeze-thaw cycles.
Storage buffer
Shipped at ambient temperature.
> 95% as determined by Tris-Bis PAGE
target relevance
transforming growth factor beta receptor 1 (TGFBR1), a key stimulator of tumor proliferation and metastasis, was a direct target of miR‑98‑5p. miR‑98‑5p overexpression resulted in the downregulation of TGFBR1 and the suppression of the viability, proliferation, migration and invasion of A549 and H1299 cells.
Protein names
TGF-beta receptor type-1 (TGFR-1) (EC (Activin A receptor type II-like protein kinase of 53kD) (Activin receptor-like kinase 5) (ALK-5) (ALK5) (Serine/threonine-protein kinase receptor R4) (SKR4) (TGF-beta type I receptor) (Transforming growth factor-beta receptor type I) (TGF-beta receptor type I) (TbetaR-I)
Gene names
Protein family
Protein kinase superfamily, TKL Ser/Thr protein kinase family, TGFB receptor subfam
FUNCTION: Transmembrane serine/threonine kinase forming with the TGF-beta type II serine/threonine kinase receptor, TGFBR2, the non-promiscuous receptor for the TGF-beta cytokines TGFB1, TGFB2 and TGFB3. Transduces the TGFB1, TGFB2 and TGFB3 signal from the cell surface to the cytoplasm and is thus regulating a plethora of physiological and pathological processes including cell cycle arrest in epithelial and hematopoietic cells, control of mesenchymal cell proliferation and differentiation, wound healing, extracellular matrix production, immunosuppression and carcinogenesis. The formation of the receptor complex composed of 2 TGFBR1 and 2 TGFBR2 molecules symmetrically bound to the cytokine dimer results in the phosphorylation and the activation of TGFBR1 by the constitutively active TGFBR2. Activated TGFBR1 phosphorylates SMAD2 which dissociates from the receptor and interacts with SMAD4. The SMAD2-SMAD4 complex is subsequently translocated to the nucleus where it modulates the transcription of the TGF-beta-regulated genes. This constitutes the canonical SMAD-dependent TGF-beta signaling cascade. Also involved in non-canonical, SMAD-independent TGF-beta signaling pathways. For instance, TGFBR1 induces TRAF6 autoubiquitination which in turn results in MAP3K7 ubiquitination and activation to trigger apoptosis. Also regulates epithelial to mesenchymal transition through a SMAD-independent signaling pathway through PARD6A phosphorylation and activation. {ECO:0000269|PubMed:15761148, ECO:0000269|PubMed:16754747, ECO:0000269|PubMed:18758450, ECO:0000269|PubMed:7774578, ECO:0000269|PubMed:8752209, ECO:0000269|PubMed:8980228, ECO:0000269|PubMed:9346908}.
Subellular location
SUBCELLULAR LOCATION: Cell membrane {ECO:0000269|PubMed:21791611, ECO:0000269|PubMed:25893292, ECO:0000269|PubMed:9472030}; Single-pass type I membrane protein {ECO:0000269|PubMed:9472030}. Cell junction, tight junction {ECO:0000269|PubMed:15761148}. Cell surface {ECO:0000269|PubMed:25893292}. Membrane raft {ECO:0000269|PubMed:25893292}.
TISSUE SPECIFICITY: Found in all tissues examined, most abundant in placenta and least abundant in brain and heart. Expressed in a variety of cancer cell lines (PubMed:25893292). {ECO:0000269|PubMed:25893292}.
SUBUNIT: Homodimer; in the endoplasmic reticulum but also at the cell membrane. Heterohexamer; TGFB1, TGFB2 and TGFB3 homodimeric ligands assemble a functional receptor composed of two TGFBR1 and TGFBR2 heterodimers to form a ligand-receptor heterohexamer. The respective affinity of TGBRB1 and TGFBR2 for the ligands may modulate the kinetics of assembly of the receptor and may explain the different biological activities of TGFB1, TGFB2 and TGFB3. Component of a complex composed of TSC22D1 (via N-terminus), TGFBR1 and TGFBR2; the interaction between TSC22D1 and TGFBR1 is inhibited by SMAD7 and promoted by TGFB1 (PubMed:21791611). Interacts with CD109; inhibits TGF-beta receptor activation in keratinocytes. Interacts with RBPMS. Interacts (unphosphorylated) with FKBP1A; prevents TGFBR1 phosphorylation by TGFBR2 and stabilizes it in the inactive conformation. Interacts with SMAD2, SMAD3 and ZFYVE9; ZFYVE9 recruits SMAD2 and SMAD3 to the TGF-beta receptor. Interacts with TRAF6 and MAP3K7; induces MAP3K7 activation by TRAF6. Interacts with PARD6A; involved in TGF-beta induced epithelial to mesenchymal transition. Interacts with NEDD4L (PubMed:15496141). Interacts with SMAD7, SMURF1 and SMURF2; SMAD7 recruits NEDD4L, SMURF1 and SMURF2 to the TGF-beta receptor (PubMed:11163210, PubMed:11278251). Interacts with USP15 and VPS39. Interacts with SDCBP (via C-terminus) (PubMed:25893292). Interacts with CAV1 and this interaction is impaired in the presence of SDCBP (PubMed:25893292). Interacts with APPL1; interaction is TGF beta dependent; mediates trafficking of the TGFBR1 from the endosomes to the nucleus via microtubules in a TRAF6-dependent manner (PubMed:26583432). Interacts with GPR50; this interaction promotes the constitutive activation of SMAD signaling pathway (PubMed:29572483). {ECO:0000269|PubMed:10025408, ECO:0000269|PubMed:11163210, ECO:0000269|PubMed:11278251, ECO:0000269|PubMed:11583628, ECO:0000269|PubMed:12941698, ECO:0000269|PubMed:15177479, ECO:0000269|PubMed:15317461, ECO:0000269|PubMed:15496141, ECO:0000269|PubMed:15761148, ECO:0000269|PubMed:16754747, ECO:0000269|PubMed:17099224, ECO:0000269|PubMed:18243111, ECO:0000269|PubMed:18758450, ECO:0000269|PubMed:20207738, ECO:0000269|PubMed:21791611, ECO:0000269|PubMed:25893292, ECO:0000269|PubMed:26583432, ECO:0000269|PubMed:29572483, ECO:0000269|PubMed:7774578, ECO:0000269|PubMed:8980228, ECO:0000269|PubMed:9233797, ECO:0000269|PubMed:9311995, ECO:0000269|PubMed:9346908, ECO:0000269|PubMed:9865696}.
Post-translational modification
PTM: Phosphorylated at basal levels in the absence of ligand. Activated upon phosphorylation by TGFBR2, mainly in the GS domain. Phosphorylation in the GS domain abrogates FKBP1A-binding. {ECO:0000269|PubMed:11583628, ECO:0000269|PubMed:7774578}.; PTM: N-Glycosylated. {ECO:0000269|PubMed:9661882}.; PTM: Ubiquitinated; undergoes ubiquitination catalyzed by several E3 ubiquitin ligases including SMURF1, SMURF2 and NEDD4L2. Results in the proteasomal and/or lysosomal degradation of the receptor thereby negatively regulating its activity. Deubiquitinated by USP15, leading to stabilization of the protein and enhanced TGF-beta signal. Its ubiquitination and proteasome-mediated degradation is negatively regulated by SDCBP (PubMed:25893292). {ECO:0000269|PubMed:15496141, ECO:0000269|PubMed:22344298, ECO:0000269|PubMed:25893292}.
Target Relevance information above includes information from UniProt accession : P36897
The UniProt Consortium


SPR with Human TGFBR1 Protein
Human TGFBR1, mFc Tag captured on CM5 Chip via Protein A can bind Human Mature TGF beta 1, No Tag with an affinity constant of 0.35 µM as determined in SPR assay (Biacore T200).
HPLC of Human TGFBR1 Protein
The purity of Human TGFBR1 is greater than 95% as determined by SEC-HPLC.
SDS-PAGE gel of Human TGFBR1 Protein
Human TGFBR1 on Tris-Bis PAGE under reduced condition. The purity is greater than 95%.


Published literature highly relevant to the biological target of this product and referencing this antibody or clone are retrieved from PubMed database provided by The United States National Library of Medicine at the National Institutes of Health.



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