White spot syndrome virus (WSSV) is one of the most virulent pathogens causing high mortality in shrimp. Herein, the characterization of VP24, a major structural protein of WSSV, is described. When purified virions were subjected to Nonidet P-40 treatment to separate the envelopes from the nucleocapsids, VP24 was found to be present exclusively in the envelope fraction. Triton X-114 extraction ...

background and aims: infectious bronchitis virus (ibv) is the etiological agent of infectious bronchitis (ib), which is an acute and highly contagious disease of the respiratory and sometimes the urogenital tracts of chickens. in iran, the disease has been identified in chicken flocks with serological and virus isolation methods. gene 3c (e) encode envelop (small membrane) protein. for envelope...

The development and maintenance of chloroplasts relies on the contribution of protein subunits from both plastid and nuclear genomes. Most chloroplast proteins are encoded by nuclear genes and are post-translationally imported into the organelle across the double membrane of the chloroplast envelope. Protein import into the chloroplast consists of two essential elements: the specific recognitio...

We show that a cellular virus receptor functions in the envelope of a virus, allowing selective infection of cells displaying the receptor ligand. A G-deficient rabies virus (RV) pseudotyped with CD4- and CXCR4-derived proteins selectively infected cells expressing HIV-1 envelope protein. Envelope protein or CD4 antibodies blocked virus entry. Pseudotype virus formation was most efficient with ...

Some structural properties of the vesicular stomatitis virus (VSV) G protein were examined in virions and isolated envelope fragments. We have shown that in the virion a portion of the G protein extends through the lipid envelope and that this part of the molecule can be cleaved by chymotrypsin. Envelope fragments isolated from VSV without the use fo detergents maintained the structural charact...

Current models of retroviral entry hypothesize that interactions between the viral envelope protein and the host receptor(s) induce conformational changes in the envelope protein that activate the envelope protein and initiate fusion. We employed a liposome-binding assay to demonstrate directly and characterize the activation of a model retroviral envelope protein (EnvA) from Rous sarcoma virus...

A disease that caused by dengue virus (DENV) has become the major health problem of the world. Nowadays, no effective treatment is available to overcome the disease due to the level of dengue virus pathogeneses. A novel treatment method such as antiviral drug is highly necessary for coping with the dengue disease. Envelope protein is one of the non-structural proteins of DENV, which engaged in ...