The ultimate goal of this project is to provide insight into the functioning of cellular machines composed of RNA and protein subunits. As a model system, we are studying the introns of the yeast mitochondrial cytochrome b pre-mRNA and the proteins that assist in their splicing. In these simple systems, the RNA components contain the active site for the splicing reaction while the protein components enhance the rate of splicing by holding the RNA in its active conformation. As a first step toward understanding the functioning of this system, we have grown crystals of a protein involved in the splicing of this pre-mRNA. These crystals diffract to 2.2 angstrom resolution, and we have determined the structure by a combination of multiwavelength anomalous scattering and multiple isomorphous replacement with anomalous scattering. Analysis of this structure is ongoing.

Agency
National Institute of Health (NIH)
Institute
National Institute of Environmental Health Sciences (NIEHS)
Type
Intramural Research (Z01)
Project #
1Z01ES050162-07
Application #
7007418
Study Section
(LSB)
Project Start
Project End
Budget Start
Budget End
Support Year
7
Fiscal Year
2004
Total Cost
Indirect Cost
Name
U.S. National Inst of Environ Hlth Scis
Department
Type
DUNS #
City
State
Country
United States
Zip Code
Harris, Gregory S; Lust, Robert M; Katwa, Laxmansa C et al. (2010) Urotensin II alters vascular reactivity in animals subjected to volume overload. Peptides 31:2075-82
Hazarika, Surovi; Van Scott, Michael R; Lust, Robert M et al. (2010) Pulmonary allergic reactions impair systemic vascular relaxation in ragweed sensitive mice. Vascul Pharmacol 53:258-63
Longo, Antonella; Leonard, Christopher W; Bassi, Gurminder S et al. (2005) Evolution from DNA to RNA recognition by the bI3 LAGLIDADG maturase. Nat Struct Mol Biol 12:779-87