Natallia Strushkevich is the first author of a 2011 structural study of the mitochondrial system that converts cholesterol toward pregnenolone. The team examined the cholesterol side-chain cleavage enzyme together with its electron-transfer partner adrenodoxin.[ref]
An engineered fusion protein helped hold the partners together for crystal structure determination. The structure related the iron-sulfur cluster of adrenodoxin to the haem group of the catalytic protein, while structures with different bound sterols addressed successive reaction stages.[ref]
The engineered connection was an experimental aid, not evidence that the native proteins form one continuous chain. Comparing fusion proteins with different linker lengths also tested how the imposed connection affected reduction of the catalytic partner.[ref]
Structural basis for pregnenolone biosynthesis by the mitochondrial monooxygenase system by Natallia Strushkevich and others. Methods and supporting Figure S8: linker-dependent electron transfer
The example connects a useful structure-stabilizing intervention to an explicit check on its functional consequences. Articles by others on the same topic
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