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Monitoring Endoplasmic Reticulum Calcium Homeostasis Using a Gaussia Luciferase SERCaMP

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Published on: September 6, 2015

Organellar calcium buffers.

Daniel Prins¹, Marek Michalak

¹Department of Biochemistry, School of Molecular and Systems Medicine, University of Alberta, Edmonton, Canada.

Cold Spring Harbor Perspectives in Biology

|March 23, 2011

Summary

This summary is machine-generated.

Calcium (Ca2+) acts as a vital intracellular messenger. Diverse Ca2+ buffers within organelles like the endoplasmic reticulum manage Ca2+ signaling networks, impacting cellular functions.

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Area of Science:

Cellular Biology
Biochemistry
Molecular Biology

Background:

Calcium (Ca2+) is a critical intracellular messenger regulating numerous cellular processes.
In eukaryotic cells, Ca2+ is stored in organelles, primarily the endoplasmic/sarcoplasmic reticulum.
Specific proteins, known as Ca2+ buffers, manage Ca2+ levels within these organelles.

Purpose of the Study:

To explore the role of organellar Ca2+ buffers in cellular signaling.
To understand the diversity and function of Ca2+ buffering proteins.
To investigate the concept of a dynamic organellar Ca2+ signaling network.

Main Methods:

Literature review of Ca2+ buffering mechanisms.
Analysis of protein diversity and function in Ca2+ storage.
Examination of evidence for inter-organelle Ca2+ cross-talk.

Main Results:

Ca2+ buffers are diverse proteins with varying affinities and capacities for Ca2+.
These buffers often possess additional cellular functions beyond Ca2+ binding.
Evidence suggests cross-talk between organelles involved in Ca2+ signaling.

Conclusions:

Organellar Ca2+ buffers are key components of intracellular Ca2+ signaling.
A dynamic network of organellar Ca2+ signaling exists, mediated by these buffers.
Understanding Ca2+ buffers is crucial for comprehending cellular communication and function.