Structure of acetylcholinesterase complexed with the nootropic alkaloid, (-)-huperzine A.Raves, M.L., Harel, M., Pang, Y.-P., Silman, I., Kozikowski, A.P., Sussman, J.L.
(1997) Nat Struct Biol 4: 57-63
- PubMed: 8989325
- DOI: 10.1038/nsb0197-57
- Primary Citation of Related Structures:
- PubMed Abstract:
- Residues in Torpedo Californica Acetylcholinesterase Necessary for Processing to a Glycosyl Phosphatidylinositol-Anchored Form
Bucht, G., Hjalmarsson, K.
(1996) Biochim Biophys Acta 1292: 223
- Structure and Dynamics of the Active Site Gorge of Acetylcholinesterase: Synergistic Use of Molecular Dynamics Simulation and X-Ray Crystallography
Axelsen, P.H., Harel, M., Silman, I., Sussman, J.L.
(1994) Protein Sci 3: 188
- Quaternary Ligand Binding to Aromatic Residues in the Active-Site Gorge of Acetylcholinesterase
Harel, M., Schalk, I., Ehret-Sabatier, L., Bouet, F., Goeldner, M., Hirth, C., Axelsen, P.H., Silman, I., Sussman, J.L.
(1993) Proc Natl Acad Sci U S A 90: 9031
- Atomic Structure of Acetylcholinesterase from Torpedo Californica: A Prototypic Acetylcholine-Binding Protein
Sussman, J.L., Harel, M., Frolow, F., Oefner, C., Goldman, A., Toker, L., Silman, I.
(1991) Science 253: 872
- Purification and Crystallization of a Dimeric Form of Acetylcholinesterase from Torpedo Californica Subsequent to Solubilization with Phosphatidylinositol-Specific Phospholipase C
Sussman, J.L., Harel, M., Frolow, F., Varon, L., Toker, L., Futerman, A.H., Silman, I.
(1988) J Mol Biol 203: 821
- Primary Structure of Torpedo Californica Acetylcholinesterase Deduced from its Cdna Sequence
Schumacher, M., Camp, S., Maulet, Y., Newton, M., Macphee-Quigley, K., Taylor, S.S., Friedmann, T., Taylor, P.
(1986) Nature 319: 407
(-)-Huperzine A (HupA) is found in an extract from a club moss that has been used for centuries in Chinese folk medicine. Its action has been attributed to its ability to strongly inhibit acetylcholinesterase (AChE). The crystal structure of the complex of AChE with optically pure HupA at 2 ...
(-)-Huperzine A (HupA) is found in an extract from a club moss that has been used for centuries in Chinese folk medicine. Its action has been attributed to its ability to strongly inhibit acetylcholinesterase (AChE). The crystal structure of the complex of AChE with optically pure HupA at 2.5 A resolution shows an unexpected orientation for the inhibitor with surprisingly few strong direct interactions with protein residues to explain its high affinity. This structure is compared to the native structure of AChE devoid of any inhibitor as determined to the same resolution. An analysis of the affinities of structural analogues of HupA, correlated with their interactions with the protein, shows the importance of individual hydrophobic interactions between HupA and aromatic residues in the active-site gorge of AChE.
Department of Structural Biology, Weizmann Institute of Science, Rehovot, Israel.