The 20 kDa variant form of human growth hormone (20 kDa hGH) presents in extracts from pituitary glands and it differs from the major form of hGH (22kDa, 191 amino acids) by the deletion of amino acid residues 32-46. The physiological role of 20K hGH remains to be determined partly but the main function is regarded as stimulation of somatic and bone growth, as well as an increase in the size and mass of organs and tissues. Recombinant 20KDa human growth hormone was purified by FPLC gel-filtration chromatography, after refolding of the isolated inclusion bodies in a renaturation buffer. Alternative Names: GH-N protein, IGHD1B protein, Somatotropin protein, Growth hormone 1 Pituitary growth hormone protein, GHN protein, GH N protein, GH2 protein, , GH1 protein, hGH-N protein, hGH-V protein, Growth Hormone Pituitary protein, pituitary protein, 20kDa Growth Hormone protein, Growth hormone protein, isoform CRA_t protein, HGHN protein, Somatotropin I Precursor protein, normal protein, Growth hormone protein, Growth hormone 1 variant 1 protein, hGH N protein, HCG1749481 protein, GH protein, Pituitary growth hormone protein, Growth hormone protein, RNGHGP protein, HG1 protein, Growth hormone 1 variant 2 protein, Pituitary Growth Hormone protein, GH 1 protein, Somatotropin C protein, Growth hormone 2 isoform 4 protein, Placental growth hormone 20kDa isoform protein, Growth Hormone Normal protein, Growth hormone 1 protein