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GenElute Bacterial Genomic DNA Kits

sufficient for 10 purifications

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Bacterial Genomic DNA, Gen Elute


sufficient for 10 purifications

Quality Level

storage temp.


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NA2100, NA2110

NA2100, NA2120

G1N350, G1N70, G1N9602, G1N9604

storage temp.


storage temp.


storage temp.


storage temp.


General description

The GenElute Bacterial Genomic DNA kit provides a simple and convenient way to isolate pure genomic DNA from gram-negative bacteria. For most gram-positive bacteria, the kit must be used in conjunction with the optional lysozyme (L4919) to effectively lyse the thick peptidoglycan cell walls. A Gram-Positive Lysis Solution is provided as a diluent for preparing the lysozyme stock solutions.

The kit combines the advantages of a silica-based system with a microspin format and eliminates the need for expensive resins, alcohol precipitation, and hazardous organic compounds such as phenol and chloroform.


The purified bacterial genomic DNA is ready for downstream applications such as:
  • restriction endonuclease digestions
  • PCR
  • Southern blots
  • cloning

Features and Benefits

  • Starting material: Up to 1.5 mL of culture
  • Expected yield: Up to 20 μg
  • Elution volume: 400 μl
  • Time required: 70 - 120 min
  • A260/A280 ratio: 1.6 - 1.9
  • No phenol, chloroform, or ethanol precipitation required


The bacteria are lysed in a chaotropic salt-containing solution to ensure the thorough denaturation of macromolecules. The addition of ethanol causes the DNA to bind when the lysate is spun through a silica membrane into a microcentrifuge tube. After washing to remove the contaminants, the DNA is eluted in 200 μL of a Tris-EDTA solution.

The expected yield of genomic DNA will vary depending on the cell density of the bacterial culture and the bacterial species and strain used. DNA purified with the GenElute kit has an A260/A280 ratio between 1.6 and 1.9 and can be up to 50 kb in length.

Other Notes

For additional information, please see

Legal Information

GenElute is a trademark of Sigma-Aldrich Co. LLC

Kit Components Also Available Separately

Product No.

  • W0263Wash Solution 1SDS

  • C2112Column Preparation SolutionSDS

  • P2308Proteinase K from Tritirachium album, lyophilized powder, BioUltra, ≥30 units/mg protein, for molecular biologySDS

  • R6148RNase A solutionSDS



Hazard Classifications

Acute Tox. 4 Oral - Eye Irrit. 2 - Flam. Liq. 3 - Met. Corr. 1 - Resp. Sens. 1 - Skin Irrit. 2

Storage Class

3 - Flammable liquids



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Jeung Hee Lee et al.
Applied microbiology and biotechnology, 96(4), 993-1005 (2012-05-31)
Lipase (lip) and lipase-specific foldase (lif) genes of a biodegradable polyhydroxyalkanoate (PHA)-synthesizing Pseudomonas resinovorans NRRL B-2649 were cloned using primers based on consensus sequences, followed by polymerase chain reaction-based genome walking. Sequence analyses showed a putative Lip gene product (314
Diana Gutiérrez et al.
Applied and environmental microbiology, 78(24), 8547-8554 (2012-10-02)
Biofilms are a common cause of food contamination with undesirable bacteria, such as pathogenic bacteria. Staphylococcus aureus is one of the major bacteria causing food-borne diseases in humans. A study designed to determine the presence of S. aureus on food
Ramon Hochstrasser et al.
Applied and environmental microbiology, 88(5), e0237021-e0237021 (2022-01-06)
Legionella species are facultative intracellular pathogens that cause a life-threatening pneumonia termed Legionnaires' disease. Legionella pneumophila employs the Lqs-LvbR (Legionella quorum sensing-Legionella virulence and biofilm regulator) network to regulate virulence and motility, but its role for growth in media is
Cecilia A Silva et al.
Infection and immunity, 80(2), 839-849 (2011-11-16)
Salmonella enterica serovar Enteritidis causes a systemic, typhoid-like infection in newly hatched poultry and mice. In the present study, a library of 54,000 transposon mutants of S. Enteritidis phage type 4 (PT4) strain P125109 was screened for mutants deficient in
Susana Delgado et al.
Microbial ecology, 65(3), 763-772 (2013-02-12)
Stomach mucosa biopsies and gastric juices samples of 12 healthy persons were analysed by culturing in selective- and non-selective-rich media. Microbial DNA from four mucosal samples was also amplified by nested PCR using universal bacterial primers, and the 16S rDNA


GenElute™ Bacterial Genomic DNA Kit protocol describes a simple and convenient way for the isolation of pure genomic DNA from bacteria.

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

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