5HDZ
BACE-1 in complex with (7aR)-7a-(5-cyanothiophen-2-yl)-6-(5-fluoro-4-methyl-6-(methylthio)pyrimidin-2-yl)-3-methyl-4-oxooctahydro-2H-pyrrolo[3,4-d]pyrimidin-2-iminium
Summary for 5HDZ
Entry DOI | 10.2210/pdb5hdz/pdb |
Related | 5HD0 5HDU 5HDV 5HDX 5HE4 5HE5 5HE7 |
Descriptor | Beta-secretase 1, 5-{(2E,4aR,7aR)-6-[5-fluoro-4-methyl-6-(methylsulfanyl)pyrimidin-2-yl]-2-imino-3-methyl-4-oxooctahydro-7aH-pyrrolo[3,4-d]pyrimidin-7a-yl}thiophene-2-carbonitrile (3 entities in total) |
Functional Keywords | alzheimer's, aspartyl protease, hydrolase, hydrolase-hydrolase inhibitor complex, hydrolase/hydrolase inhibitor |
Biological source | Homo sapiens (Human) |
Cellular location | Membrane; Single-pass type I membrane protein: P56817 |
Total number of polymer chains | 2 |
Total formula weight | 93362.87 |
Authors | Orth, P. (deposition date: 2016-01-05, release date: 2016-03-16, Last modification date: 2024-11-06) |
Primary citation | Mandal, M.,Wu, Y.,Misiaszek, J.,Li, G.,Buevich, A.,Caldwell, J.P.,Liu, X.,Mazzola, R.D.,Orth, P.,Strickland, C.,Voigt, J.,Wang, H.,Zhu, Z.,Chen, X.,Grzelak, M.,Hyde, L.A.,Kuvelkar, R.,Leach, P.T.,Terracina, G.,Zhang, L.,Zhang, Q.,Michener, M.S.,Smith, B.,Cox, K.,Grotz, D.,Favreau, L.,Mitra, K.,Kazakevich, I.,McKittrick, B.A.,Greenlee, W.,Kennedy, M.E.,Parker, E.M.,Cumming, J.N.,Stamford, A.W. Structure-Based Design of an Iminoheterocyclic beta-Site Amyloid Precursor Protein Cleaving Enzyme (BACE) Inhibitor that Lowers Central A beta in Nonhuman Primates. J.Med.Chem., 59:3231-3248, 2016 Cited by PubMed Abstract: We describe successful efforts to optimize the in vivo profile and address off-target liabilities of a series of BACE1 inhibitors represented by 6 that embodies the recently validated fused pyrrolidine iminopyrimidinone scaffold. Employing structure-based design, truncation of the cyanophenyl group of 6 that binds in the S3 pocket of BACE1 followed by modification of the thienyl group in S1 was pursued. Optimization of the pyrimidine substituent that binds in the S2'-S2″ pocket of BACE1 remediated time-dependent CYP3A4 inhibition of earlier analogues in this series and imparted high BACE1 affinity. These efforts resulted in the discovery of difluorophenyl analogue 9 (MBi-4), which robustly lowered CSF and cortex Aβ40 in both rats and cynomolgus monkeys following a single oral dose. Compound 9 represents a unique molecular shape among BACE inhibitors reported to potently lower central Aβ in nonrodent preclinical species. PubMed: 26937601DOI: 10.1021/acs.jmedchem.5b01995 PDB entries with the same primary citation |
Experimental method | X-RAY DIFFRACTION (1.49 Å) |
Structure validation
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