Summary: Cat.No.: COL2A1-3929H Product Overview: Recombinant Human COL2A1 (P02458-2) amino acids (Asp 1242-Leu 1487), fused with a polyhistidine tag at the N-terminus, was produced in Human Cell. Source: Human Cells Species: Human Tag: His Form: Lyophilized from sterile PBS, pH 7.4 Molecular Mass: The recombinant human COL2A1 (aa 1242-1487) , known as chondrocalcin consists of 265 amino acids and has a calculated molecular mass of 29.8 kDa. In SDS-PAGE under reducing conditions, the apparent molecular mass of the protein is approximately 37 kDa due to glycosylation.