6ggg

Mineralocorticoid receptor in complex with (s)-13

spinqualitylabelsall models 6ggg, resolution 1.71Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 6ggg is a 2 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: CL, EYN Related: 6gev, 6gg8 Gene: NR3C2, MCR, MLR (HUMAN) Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Disease [MCR_HUMAN] Defects in NR3C2 are a cause of pseudohypoaldosteronism 1, autosomal dominant (PHA1A) [MIM:177735]. A salt wasting disease resulting from target organ unresponsiveness to mineralocorticoids. PHA1A is a mild form characterized by target organ defects confined to kidney. Patients may present with neonatal renal salt wasting with hyperkalaemic acidosis despite high aldosterone levels. These patients improve with age and usually become asymptomatic without treatment. Defects in NR3C2 are a cause of early-onset hypertension with severe exacerbation in pregnancy (EOHSEP) [MIM:605115]. Inheritance is autosomal dominant. The disease is characterized by the onset of severe hypertension before the age of 20, and by suppression of aldosterone secretion. Function [MCR_HUMAN] Receptor for both mineralocorticoids (MC) such as aldosterone and glucocorticoids (GC) such as corticosterone or cortisol. Binds to mineralocorticoid response elements (MRE) and transactivates target genes. The effect of MC is to increase ion and water transport and thus raise extracellular fluid volume and blood pressure and lower potassium levels. Publication Abstract from PubMed The mechanism-based risk for hyperkalemia has limited the use of mineralocorticoid receptor antagonists (MRAs) like eplerenone in cardio-renal diseases. Here we describe the structure and property driven lead generation and optimization, which resulted in identification of MR modulators ( S)-1 and ( S)-33. Both compounds were partial MRAs but still demonstrated equally efficacious organ protection as eplerenone after four weeks treatment in uninephrectomized rats on high salt diet and aldosterone infusion. Importantly, and in sharp contrast to eplerenone, this was achieved without substantial changes to the urine Na(+)/K(+) ratio after acute treatment in rat, which predicts a reduced risk for hyperkalemia. This work led to selection of ( S)-1 (AZD9977) as the clinical candidate for treating MR-mediated cardio-renal diseases including CKD and HF. Based on our findings we propose an empirical model for prediction of compounds with low risk of affecting the urinary Na(+)/K(+) ratio in vivo. Identification of Mineralocorticoid Receptor Modulators with Low Impact on Electrolyte Homeostasis but Maintained Organ Protection.,Granberg K, Yuan ZQ, Lindmark B, Edman K, Kajanus J, Hogner A, Malmgren M, O'Mahony G, Nordqvist A, Lindberg J, Tangefjord S, Kossenjans M, Lofberg C, Branalt J, Liu D, Selmi N, Nikitidis G, Nordberg P, Hayen A, Aagaard A, Hansson E, Hermansson M, Ivarsson I, Jansson Lofmark R, Karlsson U, Johansson U, William-Olsson L, Hartleib-Geschwindner J, Bamberg K J Med Chem. 2018 Dec 31. doi: 10.1021/acs.jmedchem.8b01523. PMID:30596500 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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