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Modified Yeast-Two-Hybrid System to Identify Proteins Interacting with the Growth Factor Progranulin

Modified Yeast-Two-Hybrid System to Identify Proteins Interacting with the Growth Factor Progranulin

Published on: January 17, 2012

Granin-derived peptides.

Josef Troger¹, Markus Theurl², Rudolf Kirchmair²

¹Department of Ophthalmology, Medical University of Innsbruck, Innsbruck, Austria.

Progress in Neurobiology

|April 27, 2017

Summary

The granin family proteins, including chromogranin A and secretogranin II, are processed into active peptides. These peptides regulate physiological and pathophysiological processes, impacting various bodily functions.

Keywords:

Angiogenesis Betagranin Catestatin Chromacin Chromogranin A Chromogranin B EM66 GE-25 Homeostatic regulations Inflammatory conditions Inhibition of tumor growth Innate immunity Manserin Multifunctional effects Myocardial protections Pancreastatin Parastatin Prochromacin Proteolytic processing Secretogranin II Secretolytin Secretoneurin Serpinins Vascular integrity Vasostatin-I Vasostatin-II WE-14

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Area of Science:

Neuroendocrinology
Molecular Biology
Biochemistry

Background:

The granin family consists of 7 proteins from the neuroendocrine system.
Key members include chromogranin A (CgA), chromogranin B (CgB), and secretogranin II (SgII).
These proteins undergo proteolytic processing into biologically active peptides.

Purpose of the Study:

To provide an updated overview of granin-derived peptides.
To detail their distribution, properties, and roles in homeostasis.
To discuss their physiological and pathophysiological significance.

Main Methods:

Comprehensive literature review.
Analysis of protein processing pathways.
Characterization of peptide functions.

Main Results:

Identified numerous granin-derived peptides from CgA, CgB, and SgII.
Highlighted peptides like vasostatins, catestatins, and secretoneurin (SN).
Detailed their diverse regulatory roles in homeostasis.

Conclusions:

Granin-derived peptides possess significant regulatory functions.
These peptides influence vasculature, myocardial contractility, and inflammatory conditions.
Further research into their roles in wound healing and tumors is warranted.