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Pyrrolysine, molecular model

Pyrrolysine, molecular model

A611/0068

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Credit

DR MARK J. WINTER / SCIENCE PHOTO LIBRARY DR MARK J. WINTER / SCIENCE PHOTO LIBRARY

Caption

Pyrrolysine. Molecular model of the amino acid pyrrolysine. Its chemical formula is C12.H21.N3.O3. Atoms are represented as rods and are colour- coded: carbon (blue), hydrogen (gold), oxygen (red) and nitrogen (dark blue). Amino acids are the building blocks of proteins. Pyrrolysine is used by methanogenic (methane-producing) archaea (single-celled microorganisms that lack a nucleus), such as Methanosarcina barkeri, which lives on the bottom of freshwater lakes. Pyrrolysine is involved in a specific type of anaerobic respiration in these microorganisms, where carbon dioxide or ethanoic acid is used to make energy and methane is produced as a waste product. To date (as of 2008), pyrrolysine has not been found to be used by any other type of organism.

Release details

Model release not required. Property release not required.

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