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    • 4. 发明申请
    • Methods and compositions for identifying anti-hcv agents
    • 用于鉴定抗hcv药物的方法和组合物
    • US20060199174A1
    • 2006-09-07
    • US10528377
    • 2004-08-18
    • Jeffrey GlennShirit EinavMenashe Elazar
    • Jeffrey GlennShirit EinavMenashe Elazar
    • C12Q1/70
    • G01N33/5767C12Q1/707G01N33/56983G01N33/6875G01N2333/18G01N2500/04
    • The invention provides methods and compositions for identifying agents for treating infection by viruses that encode a nucleotide-binding NS4B protein, or functional equivalent thereof, e.g., hepatitis C virus (HCV) or other members of the family Flaviviridae. In general, the methods involve contacting an NS4B nucleotide binding motif (NBM)-containing polypeptide with a candidate agent, and determining the effect of the candidate agent on nucleotide binding activity, a nucleotide hydrolyzing activity, or a nucleotide-dependent RNA binding activity of the polypeptide. A candidate agent that inhibits NS4B polypeptide binding to a nucleotide is an anti-viral agent, e.g., an anti-HCV agent. The invention also features a polynucleotide encoding a NS4B polypeptide having a modified NBM (e.g., which is impaired in NTP binding). The subject methods and compositions find use in a variety of therapeutic and screening applications.
    • 本发明提供用于鉴定用于治疗编码与核苷酸结合的NS4B蛋白或其功能等同物如丙型肝炎病毒(HCV)或黄病毒科的其他成员的病毒感染的药剂的方法和组合物。 通常,所述方法包括将含NS4B核苷酸结合基序(NBM)的多肽与候选试剂接触,并确定候选试剂对核苷酸结合活性,核苷酸水解活性或核苷酸依赖性RNA结合活性的影响 多肽。 抑制NS4B多肽与核苷酸结合的候选试剂是抗病毒剂,例如抗HCV剂。 本发明还特征在于编码具有修饰的NBM(例如其在NTP结合中受损的)的NS4B多肽的多核苷酸。 主题方法和组合物可用于各种治疗和筛选应用。