Karyophilic properties of Semliki Forest virus nucleocapsid protein
نویسندگان
چکیده
منابع مشابه
Structure of Semliki Forest virus core protein.
Alphaviruses are enveloped, insect-borne viruses, which contains a positive-sense RNA genome. The protein capsid is surrounded by a lipid membrane, which is penetrated by glycoprotein spikes. The structure of the Sindbis virus (SINV) (the type virus) core protein (SCP) was previously determined and found to have a chymotrypsin-like structure. SCP is a serine proteinase which cleaves itself from...
متن کاملSemliki Forest virus core protein fragmentation: its possible role in nucleocapsid disassembly.
Semliki Forest virus (SFV) envelope proteins function as proton pores under mildly acidic conditions and translocate protons across the viral membrane [Schlegel, A., Omar, A., Jentsch, P., Morell, A. and Kemp, F. C. (1991) Biosci. Rep. 11, 243-255]. As a consequence, during uptake of SFV by cells via receptor-mediated endocytosis the nucleocapsid is supposed to be exposed to protons. In this pa...
متن کاملProperties of non-structural protein 1 of Semliki Forest virus and its interference with virus replication
Semliki Forest virus (SFV) non-structural protein 1 (nsP1) is a major component of the virus replicase complex. It has previously been studied in cells infected with virus or using transient or stable expression systems. To extend these studies, tetracycline-inducible stable cell lines expressing SFV nsP1 or its palmitoylation-negative mutant (nsP16D) were constructed. The levels of protein exp...
متن کاملPhosphorylation site analysis of Semliki forest virus nonstructural protein 3.
Nonstructural protein 3 (Nsp3) is an essential subunit of the alphavirus RNA replication complex, although its specific function(s) has yet to be well defined. Previously, it has been shown that Semliki Forest virus Nsp3 (482 amino acids) is a phosphoprotein, and, in the present study, we have mapped its major phosphorylation sites. Mass spectrometric methods utilized included precursor ion sca...
متن کاملMembrane fusion mutants of Semliki Forest virus
Previous reports have indicated that the entry of Semliki Forest virus (SFV) into cells depends on a membrane fusion reaction catalyzed by the viral spike glycoproteins and triggered by the low pH prevailing in the endosomal compartment. In this study the in vitro pH-dependent fusion of SFV with nuclease-filled liposomes has been used to select for a new class of virus mutants that have a pH-co...
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ژورنال
عنوان ژورنال: Journal of Virology
سال: 1990
ISSN: 0022-538X,1098-5514
DOI: 10.1128/jvi.64.10.5123-5131.1990