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Reporter Genes

Reporter Genes

Reporter genes are a type of protein-coding gene that are often tagged to a gene of interest. Once inside a target cell, reporter genes usually produce visually identifiable characteristics like fluorescence and luminescence when expressed along with the gene of interest. Thus, reporter genes “report” the presence or absence of genes of interest in an organism, determine the gene expression pattern, or track the physical location of a DNA segment or protein in the cell.
Commonly used reporter...

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Wide-Field, Real-Time Imaging of Local and Systemic Wound Signals in Arabidopsis

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A genetically encoded copper(I) sensor based on engineered structural distortion of EGFP.

Junyi Liang¹, Meng Qin, Rui Xu

¹National Laboratory of Solid State Microstructure, Department of Physics, Nanjing University, 22 Hankou Road, Nanjing, Jiangsu, China.

Chemical Communications (Cambridge, England)

|March 15, 2012

Summary

Researchers developed a new fluorescent sensor for imaging copper(I) in living organisms. This sensor uses engineered changes in the structure of enhanced green fluorescent protein (EGFP) to detect copper(I).

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Area of Science:

Biochemistry
Molecular Biology
Biophysics

Background:

Copper(I) is essential for biological processes but its dysregulation is linked to diseases.
Existing methods for detecting copper(I) in vivo are often limited.
Genetically encoded sensors offer a promising approach for real-time biological imaging.

Purpose of the Study:

To develop a novel genetically encoded fluorescent sensor for in vivo copper(I) imaging.
To utilize engineered intramolecular mechanical strain and structural distortion of EGFP for copper(I) detection.

Main Methods:

Engineering of enhanced green fluorescent protein (EGFP) to introduce sensitivity to copper(I).
Design of intramolecular mechanical strain and structural distortion mechanisms within EGFP.
Validation of the sensor's performance for in vivo copper(I) imaging.

Main Results:

Successful development of a genetically encoded fluorescent sensor for copper(I).
Demonstration of sensor's ability to image copper(I) in vivo.
Characterization of the sensor's response to copper(I) based on structural changes.

Conclusions:

The engineered EGFP-based sensor provides a new tool for in vivo copper(I) imaging.
This approach enables visualization of copper(I) dynamics in biological systems.
The sensor design offers potential for developing other genetically encoded reporters.