Sequence of this protein is as follows: KPETFEHLFI KHTASVTCGP LLLEPETISE DISVDTSWKN KDEMMPTTVV SLLSTTDLEK GSVCISDQFN SVNFSEAEGT EVTYEDESQR. The leptin (OB-R) receptor is a member of the cytokine receptor superfamily which plays an important role in mamma