Structural highlights
Disease
[DHI1_HUMAN] Defects in HSD11B1 are a cause of cortisone reductase deficiency (CRD) [MIM:604931]. In CRD, activation of cortisone to cortisol does not occur, resulting in adrenocorticotropin-mediated androgen excess and a phenotype resembling polycystic ovary syndrome (PCOS).
Function
[DHI1_HUMAN] Catalyzes reversibly the conversion of cortisol to the inactive metabolite cortisone. Catalyzes reversibly the conversion of 7-ketocholesterol to 7-beta-hydroxycholesterol. In intact cells, the reaction runs only in one direction, from 7-ketocholesterol to 7-beta-hydroxycholesterol (By similarity).
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
11beta-hydroxysteroid dehydrogenase type 1 (11beta-HSD1) catalyzes the NADPH dependent interconversion of inactive cortisone to active cortisol. Excess 11beta-HSD1 or cortisol leads to insulin resistance and metabolic syndrome in animal models and in humans. Inhibiting 11beta-HSD1 activity signifies a promising therapeutic strategy in the treatment of Type 2 diabetes and related diseases. Herein, we report two highly potent and selective small molecule inhibitors of human 11beta-HSD1. While compound 1, a sulfonamide, functions as a simple substrate competitive inhibitor, compound 2, a triazole, shows the kinetic profile of a mixed inhibitor. Co-crystal structures reveal that both compounds occupy the 11beta-HSD1 catalytic site, but present distinct molecular interactions with the protein. Strikingly, compound 2 interacts much closer to the cofactor NADP+ and likely modifies its binding. Together, the structural and kinetic analyses demonstrate two distinctive molecular inhibition mechanisms, providing valuable information for future inhibitor design.
Distinctive molecular inhibition mechanisms for selective inhibitors of human 11beta-hydroxysteroid dehydrogenase type 1.,Tu H, Powers JP, Liu J, Ursu S, Sudom A, Yan X, Xu H, Meininger D, Degraffenreid M, He X, Jaen JC, Sun D, Labelle M, Yamamoto H, Shan B, Walker NP, Wang Z Bioorg Med Chem. 2008 Oct 1;16(19):8922-31. Epub 2008 Aug 29. PMID:18789704[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Tu H, Powers JP, Liu J, Ursu S, Sudom A, Yan X, Xu H, Meininger D, Degraffenreid M, He X, Jaen JC, Sun D, Labelle M, Yamamoto H, Shan B, Walker NP, Wang Z. Distinctive molecular inhibition mechanisms for selective inhibitors of human 11beta-hydroxysteroid dehydrogenase type 1. Bioorg Med Chem. 2008 Oct 1;16(19):8922-31. Epub 2008 Aug 29. PMID:18789704 doi:10.1016/j.bmc.2008.08.065
