| First Author | Cortright DN | Year | 1995 |
| Journal | Mol Cell Endocrinol | Volume | 111 |
| Issue | 2 | Pages | 147-57 |
| PubMed ID | 7556876 | Mgi Jnum | J:27447 |
| Mgi Id | MGI:74926 | Doi | 10.1016/0303-7207(95)03558-o |
| Citation | Cortright DN, et al. (1995) Molecular and biochemical characterization of the mouse brain corticotropin-releasing hormone-binding protein. Mol Cell Endocrinol 111(2):147-57 |
| abstractText | A 37 kDa corticotropin-releasing hormone-binding protein (CRH-BP), distinct from the CRH receptor, is expressed in rat anterior pituitary corticotrophs and many regions of the brain, suggesting that CRH-BP may modulate the biological activity of CRH. In these studies a mouse brain CRH-BP (mCRH-BP) cDNA has been isolated and characterized. The 1666 nucleotide mCRH-BP cDNA is expressed in brain and pituitary and encodes a 322 amino acid protein that is highly homologous to human and rat CRH-BPs. Recombinant mCRH-BP, expressed in cultured mammalian cells, binds human CRH (Kd(app) = 0.56 nM and Ki(app) = 0.37 nM) and the alpha-helical (9-41) CRH antagonist (Ki(app) = 0.28 nM) with high affinity, but exhibits much weaker affinity for ovine CRH (Ki(app) = 206 nM). Recombinant mCRH-BP also blocks CRH-induced adrenocorticotropin release from AtT-20 cells. Additional biochemical characterization of the binding activity of mCRH-BP indicates that CRH-BP and CRH receptor utilize different molecular interactions to bind CRH. |
