Journal
VIRUSES-BASEL
Volume 10, Issue 3, Pages -Publisher
MDPI
DOI: 10.3390/v10030109
Keywords
RSV M protein; virus assembly; Bioluminescence resonance energy transfer (BRET); confocal microscopy
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Funding
- Ministero dell'Istruzione, Universita e Ricerca MURST
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Respiratory syncytial virus (RSV) is an important human pathogen, which infects respiratory tract epithelial cells causing bronchiolitis and pneumonia in children and the elderly. Recent studies have linked RSV matrix (M) ability to self-interaction and viral budding. However, RSV M has been crystalized both as a monomer and a dimer, and no formal proof exists to date that it forms dimers in cells. Here, by using a combination of confocal laser scanning microscopy and bioluminescent resonant energy transfer applied to differently tagged deletion mutants of RSV M, we show that the protein can self-interact in living mammalian cells and that both the N and C-terminus of the protein are strictly required for the process, consistent with the reported dimeric crystal structure.
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