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Updated: Jul 7, 2026
12:11
Computation of Atmospheric Concentrations of Molecular Clusters from ab initio Thermochemistry
Published on: April 8, 2020
The kernel energy method of quantum mechanical approximation carried to fourth-order terms
Lulu Huang1, Lou Massa, Jerome Karle
1Laboratory for the Structure of Matter, Naval Research Laboratory, 4555 Overlook Avenue SW, Washington, DC 20375-5320, USA.
Summary
Calculating large biological molecule energies is now feasible using quantum crystallography and kernel energy methods (KEM). This approach, enhanced by supercomputing, achieves remarkable accuracy for complex biomolecules like proteins and DNA.
Area of Science:
- Computational chemistry
- Quantum mechanics
- Biophysics
Background:
- Advances in parallel supercomputing have enabled complex calculations.
- Quantum crystallography and quantum kernels offer a new computational formalism.
Purpose of the Study:
- To investigate the accuracy of the kernel energy method (KEM) for large biological molecules.
- To extend KEM accuracy to fourth-order kernel interactions.
Main Methods:
- Utilized quantum crystallography and quantum kernels for ab initio calculations.
- Applied the kernel energy method (KEM) to peptides, proteins (insulin, collagen), DNA, and RNA.
- Calculated drug-biochemical target interactions.
Main Results:
- KEM at second order showed good accuracy for various biomolecules.
- Investigated KEM accuracy up to fourth-order kernel interactions.
- Achieved remarkable accuracy in calculating the ground state energy of Leu1-zervamicin.
Conclusions:
- The kernel energy method (KEM) provides accurate ab initio quantum mechanical calculations for large biological systems.
- Further extension of KEM to higher-order interactions enhances accuracy.
- This method is promising for studying drug interactions and biomolecular properties.
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