Nipah virus fusion protein: influence of cleavage site mutations on the cleavability by cathepsin L, trypsin and furin.
Nipah virus fusion protein: influence of cleavage site mutations on the cleavability by cathepsin L, trypsin and furin.
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DOI:
10.1016/j.virusres.2009.07.020
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发表时间:
2009-11
期刊:
影响因子:
5
通讯作者:
Maisner A
中科院分区:
文献类型:
--
作者:
Diederich S;Dietzel E;Maisner A
Nipah virus (NiV), a highly pathogenic member of the Paramyxoviridae which originated from bats, encodes for a fusion (F) protein which is proteolytically processed within endosomes by cathepsin L. We show here that sequence requirements for NiV F activation differ markedly from other para- or orthomyxoviral fusion proteins. In contrast to other viral fusion proteins with monobasic cleavage sites, processing of NiV F proteins with one single basic amino acid in the cleavage peptide by exogenous trypsin is very inefficient, and introduction of a consensus sequence for furin does not result in cleavage by this ubiquitous protease. In contrast, a multibasic cleavage peptide in the NiV F protein completely impairs proteolytic processing and the generation of biological activity.
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