O'Brien MD, Kapoor M. Studies of the structure-function relationships of Neurospora pyruvate kinase: denaturation by urea and the effect of ligands on the refolding and renaturation process.
THE INTERNATIONAL JOURNAL OF BIOCHEMISTRY 1980;
11:107-16. [PMID:
6444599 DOI:
10.1016/0020-711x(80)90242-6]
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Abstract
1. The renaturation of Neurospora pyruvate kinase following denaturation with urea was investigated. 2. The substrates, phosphoenol pyruvate and adenosine diphosphate, were observed to stabilize the enzyme against urea-induced structural disorganization. 3. It was demonstrated that for refolding/reactivation of the denatured protein the allosteric activator, fructose-1,6-diphosphate and a sulphydryl protectant are required. 4. The enzyme recovered following renaturation showed complete immunological identity with the native enzyme in Ouchterlony double diffusion tests.
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