Murine Hepatitis Virus Nonstructural Protein 4 Regulates Virus-Induced Membrane Modifications and Replication Complex Function
نویسندگان
چکیده
منابع مشابه
Replication of hepatitis C virus RNA occurs in a membrane-bound replication complex containing nonstructural viral proteins and RNA.
Biochemical studies revealed that nonstructural proteins of hepatitis C virus (HCV) interacted with each other and were associated with intracellular membranes. The goals of this study were to determine whether nonstructural viral proteins are colocalized at specific intracellular sites where HCV RNA is replicated and to identify the virus components of the HCV replication complex (RC). Immunof...
متن کاملStructure and function of the membrane anchor domain of hepatitis C virus nonstructural protein 5A.
Hepatitis C virus (HCV) nonstructural protein 5A (NS5A) is a membrane-associated, essential component of the viral replication complex. Here, we report the three-dimensional structure of the membrane anchor domain of NS5A as determined by NMR spectroscopy. An alpha-helix extending from amino acid residue 5 to 25 was observed in the presence of different membrane mimetic media. This helix exhibi...
متن کاملHepatitis C Virus Nonstructural Protein 5A Inhibits Thapsigargin-Induced Apoptosis
BACKGROUND We previously reported that the hepatitis C virus (HCV) nonstructural protein 5A (NS5A) down-regulates TLR4 signaling and lipopolysaccharide-induced apoptosis of hepatocytes. There have been several reports regarding the association between HCV infection and endoplasmic reticulum (ER) stress. Here, we examined the regulation of HCV NS5A on the apoptosis of hepatocytes induced by thap...
متن کاملMutations across murine hepatitis virus nsp4 alter virus fitness and membrane modifications.
UNLABELLED A common feature of infection by positive-sense RNA virus is the modification of host cell cytoplasmic membranes that serve as sites of viral RNA synthesis. Coronaviruses induce double-membrane vesicles (DMVs), but the role of DMVs in replication and virus fitness remains unclear. Coronaviruses encode 16 nonstructural proteins (nsps), three of which, nsp3, nsp4, and nsp6, are necessa...
متن کاملPhosphorylation of hepatitis C virus nonstructural protein 5A modulates its protein interactions and viral RNA replication.
The study of the hepatitis C virus (HCV) has been hindered by the lack of in vitro model systems. The recent development of HCV subgenomic RNA replicons has permitted the study of viral RNA replication in cell culture; however, the requirements for efficient replication of replicons in this system are poorly understood. Many viral isolates do not function as replicons and most require conserved...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Virology
سال: 2010
ISSN: 0022-538X,1098-5514
DOI: 10.1128/jvi.01772-09