Structural studies of apoptosis and ion transport regulatory proteins in membranes.

ABSTRACT: Solid-state NMR spectroscopy is being used to determine the structures of membrane proteins involved in the regulation of apoptosis and ion transport. The Bcl-2 family includes pro- and anti-apoptotic proteins that play a major regulatory role in mitochondrion-dependent apoptosis or programmed cell death. The NMR data obtained for (15)N-labeled anti-apoptotic Bcl-xL in lipid bilayers are consistent with membrane association through insertion of the two central hydrophobic alpha-helices that are also required for channel formation and cytoprotective activity. The FXYD family proteins regulate ion flux across membranes, through interaction with the Na(+), K(+)-ATPase, in tissues that perform fluid and solute transport or that are electrically excitable. We have expressed and purified three F

SUBMITTER: Franzin CM 

PROVIDER: S-EPMC3033199 | biostudies-literature | 2004 Feb

REPOSITORIES: biostudies-literature