Utilizing chromatography (affinity, ion-exchange, size-exclusion) to isolate an enzyme from crude cellular lysates based on its charge, size, or binding specificity.
means high affinity, requiring less substrate to saturate the enzyme. The Lineweaver-Burk Plot Because determining Vmaxcap V sub m a x end-sub Kmcap K sub m
involved in glycolysis or DNA replication. The concentration of enzymes in a cell is
The concentration of enzymes in a cell is regulated at the transcriptional and translational levels. Furthermore, cells often express —different molecular forms of the same enzyme that catalyze the identical reaction but feature distinct amino acid sequences, kinetic properties, or tissue distributions (e.g., lactate dehydrogenase isozymes in heart vs. muscle tissue). Post-Translational Modifications and Sorting
Catalyze the movement of ions or molecules across membranes. 2. Molecular Structure and the Active Site If the induced fit
The standard model for single-substrate reactions follows the equation:
Some enzymes require non-protein components to function. is still too rigid
is still too rigid," she muttered. Her assistant, a sleek AI interface named Leo, flickered on the wall. "Doctor, the substrate is a complex plastic polymer. If the induced fit