Putrescine

Putrescine (sometimes spelled putrescin or putrescene) is an organic chemical compound NH₂(CH₂)₄NH₂ (1,4-diaminobutane or butanediamine).

It is related to cadaverine; both are produced by the breakdown of amino acids in living and dead organisms. The two compounds are largely responsible for the foul odor of putrefying flesh, but also contribute to the odor of such processes as bad breath and bacterial vaginosis. They are also found in semen and some microalgae, together with related molecules like spermine and spermidine.

Additional recommended knowledge

Essential Laboratory Skills Guide

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Production and use

Putrescine is produced on industrial scale by hydrogenation of succinonitrile, which is produced by addition of hydrogen cyanide to acrylonitrile. Putrescine is reacted with adipic acid to yield the polyamide Nylon-4,6, which is marketed by DSM under the trade name Stanyl®.

Biochemistry

Putrescine attacks s-adenosyl methionine and converts it to spermidine. Spermidine in turn attacks another s-adenosyl methionine and converts it to spermine.

Putrescine is synthesized in small quantities by healthy living cells by the action of ornithine decarboxylase. The polyamines, of which putrescine is one of the simplest, appear to be growth factors necessary for cell division.

History

Putrescine and cadaverine were first described by the Berlin physician Ludwig Brieger in 1885.

Cultural references

Putrescine is featured as a non-lethal weapon in the science fiction novel Zodiac, by Neal Stephenson.

References

• "Nitriles". Ullmann's Encyclopedia of Industrial Chemistry (7th Ed.). Retrieved on 2007-09-10. 
• DSM Engineering Plastics. Retrieved on 2007-09-10.