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Representative amino acid side chain interactions in proteins. A comparison of highly accurate correlated ab initio quantum chemical and empirical potential procedures

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388963%3A_____%2F09%3A00324799" target="_blank" >RIV/61388963:_____/09:00324799 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Representative amino acid side chain interactions in proteins. A comparison of highly accurate correlated ab initio quantum chemical and empirical potential procedures

  • Original language description

    Interactions between amino acid side chains play a crucial role both within a folded protein and between the interacting protein molecules. Here we have selected a representative set of 24 of the 400 (20 20) possible interacting side chain pairs and computed the interaction energy in the gas phase using several different, commonly used, ab initio and force field methods, namely M?ller-Plesset perturbation theory (MP2), density functional theory combined with symmetry-adapted perturbation theory (DFT-SAPT), density functional theory empirically augmented with an empirical dispersion term (DFT-D), and empirical potentials using the OPLS-AA/L and Amber03 force fields. All the methods were compared against a reference method taken to be the CCSD(T) level of theory extrapolated to the complete basis set limit. We found a high degree of agreement between the different methods, even though the range of binding energies obtained was extremely large.

  • Czech name

    Reprezentativní interakce aminokyselin v proteinech: srovnání přesných ab-initio kvantově chemických výpočtů s empirickými potenciály

  • Czech description

    Interakce mezi aminokyselinami hrají zásadní roli ve stabilizaci a interakci proteinů. V této práci na reprezentativním souboru 24 párů (z celkového počtu 400) aminokyselin prezentujeme interakční enegii ve vakuu získanou několika různými výpočetními metodami: konkrétně MP2, DFT-SAPT, DFT-D a OPLS-AA/L a Amber03 empirickými potenciály. Všechny metody byly srovnány s referenčními hodnotami získanými CCSD(T) extrapolovanými na nekonečnou bázi. Nalezli jsme vysokou míru korelace pro širokou škálu interakčních energií u všech použitých metod, přestože rozsah hodnot byl extrémně široký.

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    CF - Physical chemistry and theoretical chemistry

  • OECD FORD branch

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>Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2009

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Journal of Chemical Theory and Computation

  • ISSN

    1549-9618

  • e-ISSN

  • Volume of the periodical

    5

  • Issue of the periodical within the volume

    4

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    11

  • Pages from-to

  • UT code for WoS article

    000265268800037

  • EID of the result in the Scopus database