PMID- 15548008 OWN - NLM STAT- MEDLINE DCOM- 20050113 LR - 20041119 IS - 0002-7863 (Print) IS - 0002-7863 (Linking) VI - 126 IP - 46 DP - 2004 Nov 24 TI - Structure-based design of estrogen receptor-beta selective ligands. PG - 15106-19 AB - We present the structure-based optimization of a series of estrogen receptor-beta (ERbeta) selective ligands. X-ray cocrystal structures of these ligands complexed to both ERalpha and ERbeta are described. We also discuss how molecular modeling was used to take advantage of subtle differences between the two binding cavities in order to optimize selectivity for ERbeta over ERalpha. Quantum chemical calculations are utilized to gain insight into the mechanism of selectivity enhancement. Despite only two relatively conservative residue substitutions in the ligand binding pocket, the most selective compounds have greater than 100-fold selectivity for ERbeta relative to ERalpha when measured using a competitive radioligand binding assay. FAU - Manas, Eric S AU - Manas ES AD - Department of Chemical and Screening Sciences, Wyeth Research, 500 Arcola Road, Collegeville, Pennsylvania 19426, USA. manase@wyeth.com FAU - Unwalla, Rayomand J AU - Unwalla RJ FAU - Xu, Zhang B AU - Xu ZB FAU - Malamas, Michael S AU - Malamas MS FAU - Miller, Chris P AU - Miller CP FAU - Harris, Heather A AU - Harris HA FAU - Hsiao, Chulai AU - Hsiao C FAU - Akopian, Tatos AU - Akopian T FAU - Hum, Wah-Tung AU - Hum WT FAU - Malakian, Karl AU - Malakian K FAU - Wolfrom, Scott AU - Wolfrom S FAU - Bapat, Ashok AU - Bapat A FAU - Bhat, Ramesh A AU - Bhat RA FAU - Stahl, Mark L AU - Stahl ML FAU - Somers, William S AU - Somers WS FAU - Alvarez, Juan C AU - Alvarez JC LA - eng PT - Journal Article PL - United States TA - J Am Chem Soc JT - Journal of the American Chemical Society JID - 7503056 RN - 0 (Benzofurans) RN - 0 (Benzoxazoles) RN - 0 (Estrogen Receptor alpha) RN - 0 (Estrogen Receptor beta) RN - 0 (Ligands) SB - IM MH - Amino Acid Sequence MH - Benzofurans/chemistry/metabolism MH - Benzoxazoles/chemistry/metabolism MH - Binding Sites MH - Binding, Competitive MH - Crystallography, X-Ray MH - Estrogen Receptor alpha/chemistry/metabolism MH - Estrogen Receptor beta/*chemistry/*metabolism MH - Humans MH - Ligands MH - Male MH - Models, Molecular MH - Molecular Sequence Data MH - Protein Conformation MH - Quantum Theory MH - Radioligand Assay MH - Structure-Activity Relationship MH - Substrate Specificity EDAT- 2004/11/19 09:00 MHDA- 2005/01/14 09:00 CRDT- 2004/11/19 09:00 PHST- 2004/11/19 09:00 [pubmed] PHST- 2005/01/14 09:00 [medline] PHST- 2004/11/19 09:00 [entrez] AID - 10.1021/ja047633o [doi] PST - ppublish SO - J Am Chem Soc. 2004 Nov 24;126(46):15106-19. doi: 10.1021/ja047633o.