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DETERMINATION OF ULTRA-VIOLET LIGHT ABSORPTION BY CERTAIN BACTERIOPHAGES
Science (New York, N.Y.)
|July 30, 1937
Summary
Ultra-violet light absorption was studied in three Escherichia coli bacteriophages (C13, C16, C36). Purity affected light absorption levels, but not the peak absorption wavelength for these specific bacteriophages.
Area of Science:
- Microbiology
- Molecular Biology
- Biophysics
Background:
- Bacteriophages are viruses that infect bacteria, with potential applications in therapy and research.
- Understanding bacteriophage properties, such as light absorption, is crucial for their characterization and manipulation.
- Escherichia coli bacteriophages C13, C16, and C36 are specific viral agents studied for their physical and chemical attributes.
Purpose of the Study:
- To determine the ultra-violet (UV) light absorption characteristics of three distinct bacteriophage preparations: C13, C16, and C36.
- To investigate how the purity of bacteriophage preparations influences their UV absorption spectra.
- To identify the wavelength of maximum light absorption for these bacteriophages.
Main Methods:
- Bacteriophage preparations (C13, C16, C36) were created using a specific strain of Escherichia communior.
- Ultra-violet light absorption was measured for each bacteriophage preparation.
- Absorption curves were generated by plotting photographic density against wavelength.
Main Results:
- Each bacteriophage preparation exhibited a unique absorption curve.
- Crude bacteriophage preparations demonstrated higher light absorption compared to purified preparations.
- The wavelength at which maximum absorption occurred was consistent across different purity levels for each bacteriophage.
Conclusions:
- The UV absorption spectrum is a characteristic property of bacteriophages C13, C16, and C36.
- Bacteriophage purity influences the overall magnitude of UV light absorption.
- The specific wavelength of maximum UV absorption is an intrinsic characteristic of these bacteriophages, independent of preparation purity.
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