Aluminium in biological environments: a computational approach

Area of Science:

• Bioinorganic Chemistry
• Computational Biology
• Environmental Health

Background:

• Aluminium's biological availability has increased due to human activities.
• Concerns exist regarding aluminium's effects on living organisms.
• Bioinorganic chemistry of aluminium is an active research area.

Purpose of the Study:

• To understand aluminium biochemistry at a molecular level using computational studies.
• To review contributions to the field of aluminium-bioinorganic chemistry.
• To elucidate aluminium's interactions with biological molecules and potential health impacts.

Main Methods:

• Computational studies to understand aluminium biochemistry.
• Analysis of aluminium complexation with low molecular mass chelants (citrate) and high molecular mass peptides (serum transferrin).
• Investigation of aluminium's effect on protein structure and function, including oxidative stress mechanisms.

Main Results:

• Aluminium speciation depends on pH, with citrate and serum transferrin being key interactors in blood.
• Aluminium binding to citrate alters deprotonation pathways.
• Aluminium can substitute magnesium in proteins, causing conformational changes and altering protonation states.
• Aluminium can induce oxidative stress by stabilizing superoxide radicals and potentially promoting Fenton reactions.

Conclusions:

• Aluminium's interaction with biological systems is complex and pH-dependent.
• Aluminium binding to proteins can disrupt their normal function.
• Aluminium exposure may lead to oxidative stress and cellular damage.
• Computational approaches provide molecular-level insights into aluminium's biological effects.