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Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Biochemistry 2021 ; 60 (8): 559-562 Nephropedia Template TP
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Enhanced Cholesterol-Dependent Hemifusion by Internal Fusion Peptide 1 of SARS Coronavirus-2 Compared to Its N-Terminal Counterpart #MMPMID33569952
Pattnaik GP; Bhattacharjya S; Chakraborty H
Biochemistry 2021[Mar]; 60 (8): 559-562 PMID33569952show ga
Membrane fusion is an important step for the entry of the lipid-sheathed viruses into the host cells. The fusion process is being carried out by fusion proteins present in the viral envelope. The class I virus contains a 20-25 amino acid sequence at its N-terminal of the fusion domain, which is instrumental in fusion and is called as a "fusion peptide". However, severe acute respiratory syndrome (SARS) coronaviruses contain more than one fusion peptide sequences. We have shown that the internal fusion peptide 1 (IFP1) of SARS-CoV-2 is far more efficient than its N-terminal counterpart (FP) to induce hemifusion between small unilamellar vesicles. Moreover, the ability of IFP1 to induce hemifusion formation increases dramatically with growing cholesterol content in the membrane. Interestingly, IFP1 is capable of inducing hemifusion but fails to open the pore.