Different catalytic properties of two highly homologous triosephosphate isomerase monomers.

Abstract excerpt

It is assumed that amino acid sequence differences in highly homologous enzymes would be found at the peripheral level, subtle changes that would not necessarily affect catalysis. Here, we demonstrate that, using the same set of mutations at the level of the interface loop 3, the activity of a triosephosphate isomerase monomeric enzyme is ten times higher than that of a homologous enzyme with 74% identity and 86%...

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