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Cech, Thomas R. "RNA as an Enzyme." Scientific American, November 1986, p. 64. RNA can act as an enzyme by cutting, splicing, and assembling itself.

Doolittle, Russel F., and Peer Bork. "Evolutionarily Mobile Modules in Proteins." Scientific American, October 1993, p. 34. Certain modular protein structures may be transmitted horizontally across species lines.

Gutfreund, H. Kinetics for the Life Sciences: Receptors, Transmitters and Catalysts. Cambridge University Press, Cambridge and New York, 1995.

Karplus, Martin, and J. Andrew McCammon. "The Dynamics of Proteins." Scientific American, April 1986, p. 42. Proteins function by way of internal motions, which are being explored in computer simulations.

Lea, Peter J. (ed.). Enzymes of Primary Metabolism. Academic Press, London and San Diego, 1990.

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