title: Structure and function of hepatitis C virus NS3 helicase.
abstract: Hepatitis C Virus helicase activity has been mapped to the COOH-terminal 450 residues of the NS3 protein. Due to its complexity and presumed essentiality for viral replication, the helicase is an attractive target for drug discovery. The elucidation of the atomic structure of the HCV NS3 helicase in complex with oligonucleotide and with ADP has helped clarify our understanding of potential sites for inhibitor binding. Molecular details of the mechanism of this enzyme, and in particular, a better understanding of the mechanism by which ATP hydrolysis is coupled to unwinding of double-stranded substrate may facilitate more efficient structure-based drug design.
authors.affiliation: Vertex Pharmaceuticals, Inc., Cambridge, MA 02139, USA.
authors.forename: A D
authors.initials: AD
authors.lastname: Kwong
authors.forename: J L
authors.initials: JL
authors.lastname: Kim
authors.forename: C
authors.initials: C
authors.lastname: Lin
mesh_terms: D000595:Amino Acid Sequence; D000998:Antiviral Agents; D017124:Conserved Sequence; D015195:Drug Design; D016174:Hepacivirus / Q000201:enzymology*; D008958:Models, Molecular; D017434:Protein Structure, Tertiary; D020365:RNA Helicases / Q000037:antagonists & inhibitors / Q000737:chemistry / Q000378:metabolism*; D012367:RNA, Viral / Q000378:metabolism; D017361:Viral Nonstructural Proteins / Q000037:antagonists & inhibitors / Q000737:chemistry / Q000378:metabolism*; D012697:Serine Endopeptidases; D043583:Nucleoside-Triphosphatase; D053487:DEAD-box RNA Helicases; D000085242:Viral Proteases
chemical_list: D000998:Antiviral Agents; D020365:RNA Helicases; D012367:RNA, Viral; D017361:Viral Nonstructural Proteins; C084422:NS3 protein, hepatitis C virus; D012697:Serine Endopeptidases; D043583:Nucleoside-Triphosphatase; D053487:DEAD-box RNA Helicases; D000085242:Viral Proteases