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Updated: Jun 20, 2026

Large Insert Environmental Genomic Library Production

Large Insert Environmental Genomic Library Production

Published on: September 23, 2009

Large insert environmental genomic library production.

Marcus Taupp¹, Sangwon Lee, Alyse Hawley

¹Department of Microbiology and Immunology, University of British Columbia.

Journal of Visualized Experiments : Jove

|September 25, 2009

Summary

This summary is machine-generated.

This study details a method for creating large-insert environmental genomic fosmid libraries from fjord microbes. This approach captures genetic material from uncultivated organisms, advancing metagenomic research.

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Automated Gel Size Selection to Improve the Quality of Next-generation Sequencing Libraries Prepared from Environmental Water Samples

Automated Gel Size Selection to Improve the Quality of Next-generation Sequencing Libraries Prepared from Environmental Water Samples

Published on: April 17, 2015

Area of Science:

Environmental genomics
Microbiology
Molecular biology

Background:

Most microbes are unculturable, limiting traditional study methods.
Culture-independent metagenomic approaches capture microbial genes directly from environments.
Environmental genomic libraries are crucial for studying uncultivated microbial communities.

Purpose of the Study:

To describe a protocol for constructing a large-insert environmental genomic fosmid library.
To utilize DNA from a seasonally hypoxic fjord's vertical depth continuum.
To provide a detailed, best-practice method for library production.

Main Methods:

High-quality genomic DNA was end-repaired and size-selected using pulsed-field gel electrophoresis (30-60 Kb fragments).
DNA fragments were ligated into the CopyControl fosmid vector pCC1.
Lambda terminase packaged DNA into phage particles for transduction into E. coli, followed by automated colony picking and archiving.

Main Results:

A robust protocol for generating a large-insert fosmid library from environmental DNA was successfully established.
The method enables the capture and archiving of genetic material from diverse, unculturable microbial populations.
The protocol includes detailed steps for DNA preparation, library construction, and clone archiving.

Conclusions:

This protocol provides a valuable tool for environmental genomic research, expanding access to the 'uncultured majority'.
The described method facilitates the study of microbial community structure and function in challenging environments like hypoxic fjords.
The protocol is efficient, with potential stopping points, and contributes to advancing metagenomic discovery.