Recombinant human R-spondin 1 protein (RSPO1) is a 13kDa highly pure, bioactive fragment of human R-spondin 1. Our recombinant human R-spondin 1 protein is animal-free and not glycosylated to ensure production of homogeneous protein and enhanced comparability between batches.

Recombinant human R-spondin 3 protein is a 17 kDa bioactive fragment of human R-spondin 3 protein comprised of the two cysteine-rich furin-like domains, which are essential for its activity in stem cell and organoid culture. Our recombinant R-spondin 3 has been purified to homogeneity and is animal-free to ensure batch to batch consistency when adding to chemically-defined culture media.