Re-evaluation of Mycobacterium prototuberculosis
Author Information
Author(s): Noel H. Smith
Primary Institution: Scripps Research Institute
Hypothesis
Are strains of Mycobacterium tuberculosis descendants of a larger species called Mycobacterium prototuberculosis?
Conclusion
The concept of Mycobacterium prototuberculosis is rejected due to methodological flaws and lack of supporting evidence.
Supporting Evidence
- The diversity of smooth strains can be explained by recombination.
- The hypothesis of a three million year age for these bacteria is flawed.
- Evidence for the African origin of M. tuberculosis is not persuasive.
Takeaway
Scientists looked at bacteria related to tuberculosis and found that the idea of a new species called Mycobacterium prototuberculosis is not supported by strong evidence.
Methodology
The study involved comparing genetic sequences of different strains and simulating their evolution.
Potential Biases
Potential bias from the small number of variable sites and non-independence of data points.
Limitations
The analysis may overestimate divergence time due to methodological issues and non-random sampling.
Digital Object Identifier (DOI)
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