
Recombinant mouse TGF-β3 protein (Qk019)
Price range: £290.00 through £3,600.00
Transforming growth factor beta 3 (TGF-β3) protein is a member of the TGF-β family, a family involved in regulating cell survival, proliferation and differentiation. TGF-β3 is used in pluripotent stem cell maintenance media.
Qkine mouse TGF-β3 is a highly pure and bioactive 25.4 kDa protein dimer. Qkine growth factors are animal-origin free (AOF) and carrier-protein free (CF) for reproducible results.
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Price range: £290.00 through £3,600.00
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Summary:
- High purity TGF-β3 (Uniprot: P17125)
- 12.7 kDa (monomer) 25.4 kDa (dimer)
>98%, by SDS-PAGE quantitative densitometry
Expressed in E. coli
Animal origin-free (AOF) and carrier protein-free
Manufactured in our Cambridge, UK laboratories
Lyophilized from acetonitrile, TFA
- Resuspend in 10 mM HCl (Reconstitution solution A) at >50 µg/ml, add carrier protein if desired, prepare single-use aliquots and store frozen at -20 °C (short-term) or -80 °C (long-term)
Featured applications:
Expansion and differentiation of mouse pluripotent stem cells
Propagation of mouse embryonic stem cells
iPSC-derived mesoderm differentiation

TGF-β3 activity was determined using a TGF-β3 responsive firefly luciferase reporter in HEK293T cells. EC50 = 50 pg/ml. Bioactivity was determined using a TGF-β3 responsive firefly luciferase reporter in HEK293T cells. Cells were treated (in triplicate) with a serial dilution of TGF-β3 for 6 hours. Firefly luciferase activity was measured and normalized to the control Renilla luciferase activity. Data from Qk054 batch #104369.
TGF-β3 migrates as a single band at 25 kDa in non-reducing (NR) conditions and 13 kDa upon reduction (R). No contaminating protein bands are visible. Purified recombinant protein (3 µg) was resolved using 15% w/v SDS-PAGE in reduced (+β-mercaptothanol, R) and non-reduced (NR) conditions and stained with Coomassie Brilliant Blue R250. Data from Qk054 batch #104369.

Further quality assays
Mass spectrometry: single species with expected mass
Recovery from stock vial: >95%
Endotoxin: <0.005 EU/μg protein (below level of detection)
We are a company founded and run by scientists to provide a service and support innovation in stem cell biology and regenerative medicine. All our products are exceptionally high purity, with complete characterisation and bioactivity analysis on every lot.
Protein background
Transforming growth factor beta 3 (TGF-β3) is a member of the TGF-β family (and TGF-β superfamily). Like other TGF-β family members – TGF-β1 and 2 – TGF-β3 signals via receptor complexes consisting of Type I and Type II serine/threonine kinase receptors, activating intracellular SMAD transcription factors [1]. The TGF-β family have a high degree of overlap/redundancy and regulate a variety of cellular functions, including cell survival, proliferation, and differentiation [2]. TGF-β3 has isoform-specific roles in embryonic palate fusion [3] and wound healing [4].
In culture, TGF-β3 is often used in pluripotent cell maintenance. TGF-β3 is a component of B8 media – the low-cost weekend-free iPSC media developed in the lab of Paul Burridge, Northwestern University [5]. In the development of B8 media, Kuo et al. proved that while TGF-β1 can maintain iPSCs at 2 ng/ml, TGF-β3 can maintain iPSCs in as little as 0.1 ng/ml, making it a cost-effective alternative to TGF-β1 [5].
Mouse TGF-β3 has 100% homology to human TGF-β3 (Qk054).
Our products are for research use only and not for diagnostic or therapeutic use. Products are not for resale.
For use in manufacturing of cellular or gene therapy products. Not intended for in vivo applications.

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