Mapping the domains on the phosphoprotein of bovine respiratory syncytial virus required for N-P and P-L interactions using a minigenome system.
The interaction of bovine respiratory syncytial virus (BRSV) phosphoprotein (P) with nucleocapsid (N) and large polymerase (L) proteins was investigated using an intracellular BRSV-CAT minigenome replication system. Coimmunoprecipitation assays using P-specific antiserum revealed that the P protein can form complexes with N and L proteins. Deletion mutant analysis of the P protein was performed to identify the regions of P protein that interact with N and L proteins. The results indicate that two independent N-binding sites exist on the P protein: an internal region of 161-180 amino acids and a C-terminal region of 221-241 amino acids. The L-binding site was mapped to a region of P protein encompassing amino acids 121-160. The data suggest that N and L protein binding domains on the P protein do not overlap.
Virginia-Maryland Regional College of Veterinary Medicine, University of Maryland, College Park, MD 20742, USA1.
Sunil K
SK
Khattar
Virginia-Maryland Regional College of Veterinary Medicine, University of Maryland, College Park, MD 20742, USA1.
Abdul S
AS
Yunus
Virginia-Maryland Regional College of Veterinary Medicine, University of Maryland, College Park, MD 20742, USA1.
Siba K
SK
Samal
D001665:Binding Sites; D016679:Genome, Viral; D019251:Nucleocapsid / Q000737:chemistry / Q000378:metabolism*; D010750:Phosphoproteins / Q000737:chemistry / Q000378:metabolism*; D018112:Respiratory Syncytial Virus, Bovine / Q000737:chemistry* / Q000235:genetics; D014764:Viral Proteins / Q000737:chemistry / Q000378:metabolism*
D010750:Phosphoproteins; D014764:Viral Proteins