1vyi
From Proteopedia
| |||||||
| , resolution 1.5Å | |||||||
|---|---|---|---|---|---|---|---|
| Sites: | |||||||
| Ligands: | |||||||
| Activity: | RNA-directed RNA polymerase, with EC number 2.7.7.48 | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
STRUCTURE OF THE C-TERMINAL DOMAIN OF THE POLYMERASE COFACTOR OF RABIES VIRUS: INSIGHTS IN FUNCTION AND EVOLUTION.
Overview
The phosphoprotein (P) of rabies virus binds the viral polymerase to the nucleoprotein (N)-RNA template for transcription and replication. By limited protease digestion we defined a monomeric C-terminal domain of P that can bind to N-RNA. The atomic structure of this domain was determined and previously described mutations that interfere with binding of P to N-RNA could now be interpreted. There appears to be two features involved in this activity situated at opposite surfaces of the molecule: a positively charged patch and a hydrophobic pocket with an exposed tryptophan side-chain. Other previously published work suggests a conformational change in P when it binds to N-RNA, which may imply the repositioning of two helices that would expose a hydrophobic groove for interaction with N. This domain of rabies virus P is structurally unrelated to the N-RNA binding domains of the phosphoproteins of Sendai and measles virus that are members of the same order of viruses, the non-segmented negative strand RNA viruses. The implications of this finding for the evolution of this virus group are discussed.
About this Structure
1VYI is a Single protein structure of sequence from Rabies virus. Full crystallographic information is available from OCA.
Reference
Structure and function of the C-terminal domain of the polymerase cofactor of rabies virus., Mavrakis M, McCarthy AA, Roche S, Blondel D, Ruigrok RW, J Mol Biol. 2004 Oct 29;343(4):819-31. PMID:15476803
Page seeded by OCA on Thu Mar 20 14:49:44 2008
