Article ID Journal Published Year Pages File Type
1257265 Current Opinion in Chemical Biology 2009 7 Pages PDF
Abstract

Single molecule optical microscopy can directly monitor substrate turnover by individual enzymes revealing the underlying distribution of reaction rates and enzyme conformations. These techniques are particularly useful for assessing cooperativity in multi-subunit enzymes such as β-galactosidase, and for directly monitoring how ligand and substrate binding alter dynamic equilibria. Recent investigations of HIV reverse transcriptase have reiterated the importance of single molecule microscopy for determining how proteins move on oligonucleotides and how ligands and inhibitors affect motion. Similar investigations of membrane active enzymes allow direct imaging of protein–membrane interactions. For a large variety of systems, single molecule enzymology provides unprecedented images of how enzymes interact with their substrates and the differences between individual enzymes in a population.

Related Topics
Physical Sciences and Engineering Chemistry Chemistry (General)
Authors
,