COVID-19 Structure and Proteins Quiz

What is the main determinant of coronavirus tropism?

Which sinus is most commonly involved in sinus infections?

What is the function of the S2 subunit of the spike glycoprotein?

What protein is responsible for transporting mucus out of the sinuses?

What characterizes chronic sinusitis?

How do viruses belonging to Sabercovirus interact with host cells?

Coronavirus Tropism

The main determinant of coronavirus tropism is the receptor-binding domain (RBD) of the spike glycoprotein.
The RBD interacts with specific host cell receptors, determining which cells the virus can infect.

Sinus Infections

The maxillary sinus is the most commonly involved in sinus infections.

Spike Glycoprotein

The S2 subunit of the spike glycoprotein is responsible for membrane fusion, allowing the viral genome to enter the host cell.

Mucus Transport

The cilia located in the epithelial lining of the sinuses are responsible for transporting mucus out of the sinuses.

Chronic Sinusitis

Chronic sinusitis is characterized by inflammation of the sinuses lasting more than 12 weeks.

Sabercovirus

Sabercoviruses utilize a unique mechanism to interact with host cells.
They employ a viral glycoprotein that binds to host cell receptors and triggers endocytosis, bringing the virus into the cell.
This process involves viral entry and subsequent replication, ultimately leading to viral propagation.

Test your knowledge on the structure and proteins of COVID-19, including membrane, nucleocapsid, envelope, and spike glycoprotein. Learn about the non-structural and accessory proteins, as well as the spike glycoprotein's role in coronavirus tropism.