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Thu, 20 Aug 2009 17:19:02 -0500 |
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Fort Hays State University |
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Smelling acetone on breath is indicative of the body producing ketone
bodies from the oxidation of fatty acids, so it isn't related to the
Krebs cycle per se, at least directly. The enzymes of the Krebs cycle
are conserved across the animal kingdom. There may be a difference in
flux through the pathway in bees compared to a vertebrate, but I would
be skeptical. The ketone bodies are produced in starvation and
diabetes, when the amount of acetyl CoA is greater than the flux through
the Krebs cycle. In humans calcium released during muscle contraction
stimulates flux through the pathway, and though I am a mammalian
biochemist my instinct is the same would be true with contraction
associated with beating wings in bees.
------------------------------------------------------------------------
Sincerely,
Dr. Thomas J. Wiese
Professor of Chemistry
415 Lyman, TH351
Fort Hays State University
Hays, KS 67601
(785) 628-4505
E-mail: [log in to unmask]
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