Related Experiment Video
Updated: Jun 16, 2026

Direct Imaging of ER Calcium with Targeted-Esterase Induced Dye Loading (TED)
Published on: May 7, 2013
Calcium binding chaperones of the endoplasmic reticulum
1Department of Biochemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2H7.
Calreticulin, a key endoplasmic reticulum chaperone, regulates calcium signaling and protein folding. This calcium buffering is vital for cellular processes and embryonic development.
Area of Science:
- Cell Biology
- Molecular Biology
- Biochemistry
Background:
- The endoplasmic reticulum (ER) is a critical cellular organelle serving as a major calcium (Ca2+) store.
- ER Ca2+ levels influence numerous cellular functions, including lipid synthesis, protein folding, and secretion.
- Several Ca2+-buffering chaperones reside within the ER lumen, including calreticulin.
Purpose of the Study:
- To elucidate the role of calreticulin in ER Ca2+ signaling and buffering.
- To investigate calreticulin's impact on Ca2+-dependent cellular processes.
- To understand calreticulin's contribution to protein folding and quality control.
Main Methods:
- The abstract does not specify methods.
- Further research would involve biochemical assays and cellular imaging techniques.
Main Results:
- Calreticulin is identified as a primary Ca2+ binding and buffering chaperone in the ER.
- Calreticulin plays a crucial role in ER lumen Ca2+ signaling.
- This signaling impacts Ca2+-dependent pathways, including transcriptional control in embryonic development.
Conclusions:
- Calreticulin is essential for maintaining ER Ca2+ homeostasis.
- Calreticulin's function extends beyond Ca2+ buffering to include glycoprotein folding and quality control.
- Proper ER Ca2+ signaling, mediated by calreticulin, is fundamental for cellular function and development.
More Related Videos
13:40Live Cell Calcium Imaging Combined with siRNA Mediated Gene Silencing Identifies Ca2+ Leak Channels in the ER Membrane and their Regulatory Mechanisms
Published on: July 7, 2011
08:41Monitoring Endoplasmic Reticulum Calcium Homeostasis Using a Gaussia Luciferase SERCaMP
Published on: September 6, 2015
Related Concept Videos
Protein Folding Quality Check in the RER
Tail-anchoring of Proteins in the ER Membrane
Molecular Chaperones and Protein Folding
The...
Molecular Chaperones and Protein Folding
The...
Endoplasmic Reticulum
Post-translational Translocation of Proteins to the RER
Targeting proteins to the ER
Hsp40 and Hsp70 chaperone molecules bind the translated proteins in the cytosol to prevent their folding. The chaperone binding helps to keep the signal...