Protein-coding gene in the species Homo sapiens
Testican-1 is a protein that in humans is encoded by the "SPOCK1" gene.
This gene encodes the protein core of a seminal plasma proteoglycan containing chondroitin- and heparan-sulfate chains. The protein's function is under research, though it is from the same family of glycoproteins as SPARC. It is thought its similarity to thyropin-type cysteine protease inhibitors suggests its function may be related to protease inhibition.
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