Recombinant human Activin A Plus protein is a high purity, animal-free 24 kDa biologically active truncation of the mature domain of human Activin A protein. Our recombinant Activin A PLUS is designed to be manufactured at scale for cost-effective large-scale stem cell culture applications. 

Recombinant human Activin A protein is a 26 kDa disulfide-linked dimer composed of the mature active domain of human Activin A protein. Our Activin A protein has been extensively validated for its reproducibility in stem cell culture, and benchmarked against other commercial sources.

Recombinant human EGF protein is a 6.3 kDa biologically active domain of human epidermal growth factor. Our recombinant EGF protein is expressed to the highest purity in E. coli and extensively tested, making it ideal for use in chemically-defined iPSC, ESC and organoid culture media. 

Recombinant human FGF2 /bFGF protein (145 aa) is a highly bioactive, short–form variant of human fibroblast growth factor 2 protein. Our high purity FGF2 protein is produced in E. coli, providing a reliable option for regulation of ES cell and iPSC maintenance, as well as iPSC/MSC proliferation and differentiation.

Recombinant human FGF2 / bFGF protein (154 aa) is a highly bioactive, long–form variant of human fibroblast growth factor 2 protein. Our recombinant FGF2 protein has been optimized for high-purity expression in E. coli, making it a reliable option for the regulation of ESC maintenance, as well as iPSC/MSC proliferation and differentiation.

Recombinant human FGF4 protein is a 14 kDa non-glycosylated, high purity, bioactive domain of human fibroblast growth factor 4 expressed in E. coli. Our recombinant human FGF4 is ideal for applications such as the proliferation and differentiation of embryonic and tissue stem cells and organoid culture. 

Recombinant human Gremlin 1 protein has been optimized by our experts for exceptionally high-purity production and bioactivity.   Gremlin-1 is a BMP-inhibitor present in the natural intestinal niche and provides an animal-free substitute for Noggin in chemically-defined media for many ESC, iPSC and organoid culture systems. 

Recombinant human R-spondin 1 protein (RSPO1) is a highly pure, 13 kDa bioactive fragment of human R-spondin 1 composed of the cysteine-rich furin-like domains, which are essential for its activity in stem cell and organoid culture. Our recombinant human R-spondin 1 protein has been optimized for expression in E. coli and is animal-free and not glycosylated to ensure production of homogeneous protein and enhanced comparability between batches.

Recombinant human TGF-β1 PLUS protein is the first entirely animal-free recombinant human transforming growth factor beta 1 (TGF-β1) protein for highly reproducible results and compatible with chemically-defined stem cell media. Our  TGF-β1 PLUS protein has been extensively tested for maintenance of iPSC pluripotency by the specialist stem cell biotechnology company, Stemnovate, Cambridge, UK.

*Benchmark our TGF-β1 PLUS against your existing supplier*

Recombinant mouse LIF (murine leukemia inhibitory factor) protein supports the derivation, propagation and expansion of mouse embryonic stem cells (ESC), and maintenance of pluripotency. Qkine mouse LIF protein is animal and carrier-protein free for highly reproducible results. Bioactivity was tested by colony formation assay and determination of Nanog expression (1).

Recombinant zebrafish FGF2 protein (bFGF) is a 17 kDa biologically active domain of zebrafish fibroblast growth factor 2 protein, expressed in E. coli and purified to homogeneity. Our recombinant FGF2 protein is trusted by the Cambridge Stem Cell Institute, UK  to support the maintenance and differentiation of their stem cell cultures.