alexa Molecular identification and analysis of a novel human corticotropin-releasing factor (CRF) receptor: the CRF2gamma receptor.
Orthopaedics

Orthopaedics

Journal of Osteoporosis and Physical Activity

Author(s): Kostich WA, Chen A, Sperle K, Largent BL

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Abstract We report the discovery of a new CRF2 receptor splice isoform found in human brain, which we have termed the CRF2gamma receptor. The CRF2gamma cDNA encodes for a 397-amino acid receptor that has an amino terminus with no significant homology to the already reported alpha- and beta-termini. When expressed in 293-EBNA (Epstein-Barr nuclear antigen) cells, the CRF2gamma receptor responds in a dose-dependent manner to CRF and related peptides with a rank order of potency of urocortin > or = sauvagine>urotensin>r/h CRF, with EC50 values more similar to CRF2alpha than CRF2beta. Equilibrium saturation isotherm analysis with radiolabeled sauvagine reveals a two site/state model for binding to CRF2gamma with a 60 pM Kd high-affinity site and a 5 nM Kd low-affinity site. Analysis of CRF2gamma RNA expression in human brain demonstrates expression in septum and hippocampus, with weaker but detectable expression in amygdala, nucleus accumbens, midbrain, and frontal cortex. This article was published in Mol Endocrinol and referenced in Journal of Osteoporosis and Physical Activity

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