Mutational analysis of 4-coumarate:CoA ligase identifies functionally important amino acids and verifies its close relationship to other adenylate-forming enzymes.

Abstract excerpt

4-Coumarate:coenzyme A ligase (4CL) is a key enzyme of general phenylpropanoid metabolism which provides the precursors for a large variety of important plant secondary products, such as lignin, flavonoids, or phytoalexins. To identify amino acids important for 4CL activity, eight mutations were introduced into Arabidopsis thaliana At4CL2. Determination of specific activities and K(m) values for ATP and caffeate...

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