The connective tissue-activating peptide (CTAP) is found in leukocytes and platelets. It activates glycolysis and synthesis of glycosaminoglycan as well as DNA synthesis in cultured human connective tissue cells.H-D-Phe-Cys-Tyr-D-Trp-Arg-Thr-Pen-Thr-NH2 (Cys2-Pen7) or H-fCYwRT-Pen-T-NH2