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Pyridoxal

Note

Not to be confused with pyridoxol, which is pyridoxine.

Gossypol

Pyridoxal (PL) is one form of vitamin B6.

Some medically relevant bacteria, such as those in the genera Granulicatella and Abiotrophia, require pyridoxal for growth. This nutritional requirement can lead to the culture phenomenon of satellite growth. In in vitro culture, these pyridoxal-dependent bacteria may only grow in areas surrounding colonies of bacteria from other genera ("satellitism") that are capable of producing pyridoxal.

Pyridoxal is involved in what is believed to be the most ancient reaction of aerobic metabolism on Earth, about 2.9 billion years ago, a forerunner of the Great Oxidation Event.

References

(1985). "CSD Entry: BIHKEI01". [[Cambridge Crystallographic Data Centre]].
(1985). "Pyridoxal, C₈H₉NO₃, and pyridoxamine dihydrate, C₈H₁₂N₂O₂.2H₂O". [[Acta Crystallographica.
"Vitamin B-6".
"Protein Domain Structure Uncovers the Origin of Aerobic Metabolism and the Rise of Planetary Oxygen", Gustavo Caetano-Anolles et al., published in '''Structure'''; paper available from University of Illinois News Bureau, 2012.

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vitamins hydroxypyridines aldehydes 3-hydroxypropenals aromatic-ketones

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