Anti-Growth hormone receptor/GHR Antibody Picoband®

The GHR locus to human chromosome 5p13.1-p12 and to mouse chromosome 15. Additionally, its gene has 9 exons that encode the receptor and several additional exons in the 5-prime untranslated region. The coding exons span at least 87 kb. GHR consists of an extracellular domain of 246 amino acids, a single transmembrane domain, and a cytoplasmic domain. Exons 3 to 7 encode the extracellular domain. There are 2 isoforms of GHR in humans, generated by retention or exclusion of exon 3 during splicing: a full-length isoform and an isoform that lacks exon 3 (d3GHR) . Furthermore, the two isoforms of GHR are expressed in the placenta and appeared to be due to alternative splicing. In cirrhosis, there is a state of acquired GH resistance, as defined by high circulating GH levels with low IGF1 levels. Moreover, Mutations in the GHR gene have been demonstrated as the cause of Laron syndrome , also known as the growth hormone insensitivity syndrome (GHIS) .

Expressed in all tissues tested including, liver, heart, adipose tissue, mammary gland, testes, ovary, brain, kidney and muscle. Highest levels in liver.

Receptor for pituitary gland growth hormone involved in regulating postnatal body growth. On ligand binding, couples to, and activates the JAK2/STAT5 pathway (By similarity) . .

1. Barton, D. E.; Foellmer, B. E.; Wood, W. I.; Francke, U. : Chromosome mapping of the growth hormone receptor gene in man and mouse. Cytogenet. Cell Genet. 50: 137-141, 1989. 2. Godowski, P. J.; Leung, D. W.; Meacham, L. R.; Galgani, J. P.; Hellmiss, R.; Keret, R.; Rotwein, P. S.; Parks, J. S.; Laron, Z.; Wood, W. I. : Characterization of the human growth hormone receptor gene and demonstration of a partial gene deletion in two patients with Laron-type dwarfism. Proc. Nat. Acad. Sci. 86: 8083-8087, 1989. 3. Amselem, S.; Sobrier, M.-L.; Duquesnoy, P.; Rappaport, R.; Postel-Vinay, M.-C.; Gourmelen, M.; Dallapiccola, B.; Goossens, M. : Recurrent nonsense mutations in the growth hormone receptor from patients with Laron dwarfism. J. Clin. Invest. 87: 1098-1102, 1991.

Store at -20°C for one year from date of receipt. After reconstitution, at 4°C for one month. It can also be aliquotted and stored frozen at -20°C for six months. Avoid repeated freeze-thaw cycles.

Cell membrane; Single-pass type I membrane protein. On growth hormone binding, GHR is ubiquitinated, internalized, down-regulated and transported into a degradative or non-degradative pathway. .