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[Deoxyribonucleic acids from Pasteurella multocida and Pasteurella haemolytica]
Archiv Fur Experimentelle Veterinarmedizin
|January 1, 1979
Summary
This study details the isolation and characterization of DNA from Pasteurella multocida and P. haemolytica. Researchers identified optimal methods for DNA extraction and tritium labeling for genetic research.
Area of Science:
- Microbiology
- Molecular Biology
- Biochemistry
Context:
- Pasteurella multocida and P. haemolytica are significant bacterial pathogens.
- Understanding their genetic material is crucial for developing effective treatments and diagnostics.
- Bacterial DNA composition and isolation methods are key areas of research.
Purpose:
- To isolate and characterize high-molecular-weight DNA from Pasteurella multocida and P. haemolytica strains.
- To evaluate different methods for DNA purification and assess yield and purity.
- To determine the guanine-cytosine (GC) content of the isolated DNA and identify suitable precursors for tritium labeling.
Summary:
- Bacterial strains of Pasteurella multocida and P. haemolytica were analyzed for their phosphorus, nitrogen, DNA, and RNA content.
- High-molecular-weight DNA was successfully isolated using bacteriolysis with deoxycholate or dodecylsulphate, followed by purification steps including Sepharose 2 B gel chromatography.
- DNA yields and purity varied between strains. Guanine-cytosine (GC) content was determined to be 37-38% for P. haemolytica and 41-48% for P. multocida.
- Tritium labeling of DNA precursors, specifically 3H-thymidine and 3H-uracil, was investigated for efficient incorporation and recovery.
Impact:
- Provides a reliable protocol for isolating and purifying bacterial DNA from Pasteurella species.
- Characterization of DNA composition and GC content aids in bacterial strain differentiation and phylogenetic analysis.
- Identifies optimal tritium-labeled precursors for DNA synthesis, facilitating further molecular studies and genetic research on these pathogens.