Calculating pKa of selected active site aminoacids in acetylcholinesterase
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14740%2F11%3A00049967" target="_blank" >RIV/00216224:14740/11:00049967 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Calculating pKa of selected active site aminoacids in acetylcholinesterase
Original language description
Acetylcholinesterase (AChE) is an important enzyme participating in nerve signal transmission connected with Alzheimer disease and nerve agent poisoning. Initial molecular dynamics simulations using the Amber force field 03 have revealed a strong dependence of the dynamics on the protonation state of the AChE's active site. Simulations of the protonated AChE were much more stable than that of the deprotonated form where significant changes in the vicinity of the charged residues occurred. AChE's activesite contains three glutamic acid residues located close to each other (less than 8 A in the crystal structure). Using thermodynamic integration and the Amber force field 99SB, the pKa of these three glutamic acid residues was calculated. The calculatedpKa shift values appear to be overestimated and differ for forward and backward runs significantly. According to the results, AChE should have two of the three glutamate residues protonated.
Czech name
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Czech description
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Classification
Type
O - Miscellaneous
CEP classification
CF - Physical chemistry and theoretical chemistry
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach
Others
Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů