Targeted <em>in Situ</em> Mutagenesis of Histone Genes in Budding Yeast

Andrea A. Duina; Claire E. Turkal

doi:10.3791/55263

Gezielt In Situ Mutagenese von Histon-Gene in Bäckerhefe

JoVE Journal
Genetics

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JoVE Journal Genetics

Targeted in Situ Mutagenesis of Histone Genes in Budding Yeast

Gezielt In Situ Mutagenese von Histon-Gene in Bäckerhefe

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08:48 min

January 26, 2017

DOI: 10.3791/55263-v

Andrea A. Duina¹, Claire E. Turkal¹

¹Biology Department,Hendrix College

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Overview

This article presents a method for generating specific mutations in histone genes at their endogenous chromosomal locations in Saccharomyces cerevisiae. The technique allows researchers to investigate the role of specific histone residues in chromatin-related processes, such as DNA transcription.

Key Study Components

Area of Science

Genetics
Cell Biology
Chromatin Biology

Background

Histone proteins are crucial for DNA packaging and regulation.
Yeast has two highly homologous, non-allelic genes for each histone protein.
Understanding histone mutations can provide insights into chromatin function.
This method allows targeted mutagenesis of specific histone genes.

Purpose of Study

To generate mutations in histone genes at their endogenous locations.
To assess the impact of specific histone residues on chromatin processes.
To develop a reliable method for studying histone function in yeast.

Methods Used

Knockout of target histone gene replaced by URA3.
Generation of PCR products for overlapping fragments of the target gene.
Use of thermocycler for PCR amplification.
Analysis of mutations to determine their effects on chromatin function.

Main Results

Successful generation of specific mutations in histone genes.
Demonstrated the ability to target individual histone genes.
Provided insights into the role of histone residues in chromatin processes.
Established a method applicable for further studies in yeast.

Conclusions

This method is effective for studying histone gene function.
Targeted mutagenesis can enhance understanding of chromatin biology.
Future research can build on these findings to explore histone roles further.

Frequently Asked Questions

What is the significance of histone mutations?

Histone mutations can affect gene expression and chromatin structure, influencing various cellular processes.

How does this method compare to traditional mutagenesis?

This method allows for precise targeting of specific histone genes, unlike traditional methods that may introduce random mutations.

Can this technique be applied to other organisms?

While this method is designed for yeast, similar strategies may be adapted for other model organisms.

What are the potential applications of this research?

This research can inform studies on gene regulation, epigenetics, and chromatin dynamics.

Is this method suitable for high-throughput studies?

Yes, the method can be optimized for high-throughput applications to study multiple histone mutations simultaneously.

What challenges might researchers face using this technique?

Challenges may include ensuring efficient gene targeting and analyzing the functional consequences of mutations.

Eine Strategie zur Erzeugung von Mutationen in Histon-Genen an ihrer endogenen Stelle in Saccharomyces cerevisiae wird vorgestellt.

Das übergeordnete Ziel dieses Verfahrens ist es, spezifische Mutationen in Histon-Genen an ihren endogenen chromosomalen Stellen in knospenden Hefezellen zu erzeugen. Diese Methode kann verwendet werden, um den Beitrag spezifischer Histonreste in einer Vielzahl von Prozessen zu bestimmen, die Chromatin als Substrat verwenden, wie z. B. die DNA-Transkription, jede Kombination. Der Hauptvorteil dieser Technik besteht darin, dass spezifische Histongene für die Mutagenese anvisiert werden können, obwohl in der Hefe jedes Histonprotein von zwei hochgradig homologen, nicht-allelischen Genen kodiert wird.

Nach der Erzeugung eines Hefestammes, bei dem das Ziel-Histon-Gen ausgeschaltet und durch URA3 ersetzt wurde, erzeugen Sie PCR-Produkte für zwei teilweise überlappende Fragmente des Ziel-Histon-Gens, indem Sie die folgende Reaktion für die erste Hälfte des Gens einrichten. Richten Sie für die zweite Hälfte des Gens eine ähnliche PCR-Reaktion mit verschiedenen Primern ein. Geben Sie die Reaktionen in einen Thermocycler und stellen Sie das folgende Programm ein.

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