LOCALIZATION OF A DOMAIN ON THE PARAMYXOVIRUS ATTACHMENT PROTEIN REQUIRED FOR THE PROMOTION OF CELLULAR FUSION BY ITS HOMOLOGOUS FUSION PROTEIN SPIKE

被引：145
作者：
DENG, RT [1 ]
WANG, ZY [1 ]
MIRZA, AM [1 ]
IORIO, RM [1 ]
机构：
[1] UNIV MASSACHUSETTS,SCH MED,DEPT MOLEC GENET & MICROBIOL,WORCESTER,MA 01655
来源：
VIROLOGY | 1995年 / 209卷 / 02期
关键词：
D O I：
10.1006/viro.1995.1278
中图分类号：
Q93 [微生物学];
学科分类号：
071005 ; 100705 ;
摘要：
The promotion of membrane fusion by the paramyxovirus hemagglutinin-neuraminidase (HN) and fusion (F) proteins requires that they be derived from homologous viruses, suggesting the possibility that the promotion of fusion requires a virus-specific communication between the two glycoprotein spikes. We have evaluated the ability of chimeric HN proteins, composed of domains from the HN proteins of two heterologous members of the group, human parainfluenza virus 3 (hPIV3) and Newcastle disease virus (Nov), to complement the F protein of each virus in the promotion of fusion. Specificity for the F protein of hPIV3 segregates with a segment composed of the transmembrane anchor and the first 82 residues of the ectodomain of its HN protein. specificity of Nov HN for its homologous F protein is determined by a similar domain. These findings suggest that determinants specific to this segment of the attachment protein spike may be involved in the triggering Of the fusion process. (C) 1995 Academic Press, Inc.
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页码：457 / 469
页数：13
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