Selank is a heptapeptide with the sequence Thr-Lys-Pro-Arg-Pro-Gly-Pro (TKPRPGP) and is a synthetic analogue of human tuftsin.Selank is a heptapeptide with the sequence Thr-Lys-Pro-Arg-Pro-Gly-Pro (TKPRPGP) and is a synthetic analogue of human tuftsin. For detailed research and information on Selank, click here.