# Theoritical Calculations in Structures and Functions of Proteins

**Authors:** Yang Ha

PMC · DOI: 10.1063/4.0000892 · 2025-10-27

## TL;DR

Theoretical calculations help understand protein structures and functions by providing insights beyond what structures alone can show.

## Contribution

The paper highlights how quantum mechanical calculations enhance understanding of protein functions.

## Key findings

- Spin states are useful in understanding metalloproteins.
- Charge densities relate to protein functions like redox behavior.
- QM calculations model reactivities at active sites.

## Abstract

Theoritical calculations at quantum mechanic (QM) levels can provide additional insights than structures alone. For example, spin states can be extremely useful in metalloproteins; charge densities can be related to the function of proteins such as redox behavior or colors of fluorescence; quantum mechanic calculations can even model reactivities at the active site to couple with experimental kinetics data. In this presentation, I will show a few examples that with the help of theoretical calculations, the understanding of the structure and function of proteins can be greatly boosted.

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Source: https://tomesphere.com/paper/PMC12585352