試題詳解

28. Spike (S) is a glycoprotein found on the surface of coronaviruses. S protein has 1273 residues in SARS-CoV-2 and has a molecular weight of 180–200 kDa. Based on the above information, we know that________.
(A) the SARS-CoV-2 has a genome of 29,881 bp in length
(B) the expressed S protein from E. coli would have a molecular weight around 140 kDa
(C) S protein is a dimmer
(D) S protein binds to the host cell by recognizing the receptor ACE2
(E) S protein plays a key role in cell membrane fusion process