Coupled enzymatic reactions measured in a single protein crystal from myogen A.

TL;DRAbstract

Pairwise coupled reactions of fructose-1,6-bisphosphate aldolase and sn-glycerol-3-phosphate dehydrogenase, 3-phosphoglycerate kinase and D-glyceraldehyde-3-phosphate dehydrogenase, triosephosphate isomerase and sn-glycerol-3-phosphate dehydrogenase have been detected by microspectrophotometry in single crystals obtained from myogen A in the presence of polyethylene glycol. Microspectrophotometric measurements with polarized light demonstrate that the protein molecules are oriented and that NADH is bound with a definite orientation to the dehydrogenases within the crystal.

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