Serological tests for COVID-19: Potential opportunities.

In response to the commentary article about our recent publication in Cell Biology International (https://doi.org/10.1002/cbin.11516), which states that Hemagglutinin‐esterase protein is absent in SARS‐Cov2 as reported in Table 2 of our publication, we acknowledge the error and seek for correction. This is largely due to the uncertainties and discoveries about the SARS‐COV‐2 virus. However, the information provided in our publication was validated by Ravi et al. (2020) but upon critical consideration and extensive reviews of the viral structural proteins, the Hemagglutinin‐esterase protein is absent in the SARS‐COV‐2 viral structure (Astuti & Ysrafil, 2020; Yin, 2020). Therefore, the following correction should be made accordingly:

Table 2

A summary of SARS‐CoV‐2 structural proteins, binding sites, and their roles (Astuti & Ysrafil, 2020)

Protein Name	Binding mechanism	Role
Spike protein (S)	Utilizes an N‐terminal signal sequence to gain access to the ER (endoplasmic reticulum)	Mediates attachment to host receptors
Nucleocapsid protein (N)	Binds the viral genome in a beads‐on‐a‐string type conformation	Tethers the viral genome to replicase‐transcriptase complex, packages the encapsulated genome into viral particles
Envelope protein (E)	A transmembrane protein with ion channel activity	Facilitates assembly and release of the virus; involved in ion channel activity
Membrane protein (M)	Binds to nucleocapsid	Promotes membrane curvature