S100 calcium binding proteins and ion channels

Area of Science:

• Neuroscience
• Molecular Biology
• Cell Biology

Background:

• S100 Ca(2+)-binding proteins are crucial for numerous intracellular Ca(2+)-dependent processes.
• These proteins sense intracellular calcium levels and influence protein phosphorylation, impacting cellular functions.
• Some S100 proteins are secreted extracellularly, mediating distinct functions including neurotrophic activity.

Purpose of the Study:

• To review the physical and functional interactions between S100 proteins and ion channels.
• To highlight the role of S100 proteins in modulating neuronal electrical behavior and ion channel activity.

Main Methods:

• Literature review of studies investigating S100 protein-ion channel interactions.
• Analysis of research on S100 protein effects on Ca(2+) fluxes, K(+) currents, and neuronal discharge.
• Examination of recent findings on S100 interactions with Ca(2+), K(+), Cl(-), and ligand-gated channels.

Main Results:

• S100 proteins interact physically and functionally with a range of ion channels.
• These interactions influence ion fluxes (Ca(2+), K(+), Cl(-)) and neuronal electrical activity.
• S100 proteins modulate both intracellular and extracellular ion channel functions.

Conclusions:

• S100 proteins are key regulators of ion channel activity and neuronal excitability.
• Understanding S100 protein-ion channel interplay is vital for comprehending cellular signaling and neurological functions.
• Further research into these interactions may reveal therapeutic targets for neurological disorders.