Ion irradiation induced direct damage to proteins and their components

TL;DR

This paper investigates how energetic ion irradiation causes direct molecular damage to proteins, complementing prior DNA-focused studies, and emphasizes the importance of understanding protein lesions for comprehensive radiation effect analysis.

Contribution

It introduces the study of ion-induced direct damage to proteins at the molecular level, an area less explored compared to DNA damage, to enhance understanding of radiation effects on living cells.

Findings

Ion irradiation causes direct damage to proteins and their components.

Protein lesions from energetic ions are less studied but are biologically significant.

Understanding protein damage complements DNA damage studies in radiation biology.

Abstract

In our last paper, we have reported the direct interact between energetic ions and DNA, and its components, pointing out that damage to DNA is actually of highest biological consequence, as the integrity of DNA sequence is essential for biological function. Proteins are another kind of important biomolecules. Although much recent attention has been payed to ion irradiation initiated reaction cascades leading to DNA damage, the protein lesions induced by energetic ions remain virtually unexplored at the molecular scale (maybe because there are usually many copies of each protein, so a comparable level of damage is of much less biological impact). Except for DNA damage, an understanding of nascent events leading to radiolytic protein damage is also required in order to achieve a complete description of ionizing radiation effects on living cells.