Find the Ke [ Y ] stone
Epitope – The distinct surface features of an antigen, its antigenic determinant. Antigenic molecules, normally "large" biological polymers, usually present surface features that can act as points of interaction for specific antibodies. Any such feature constitutes an epitope. Most antigens have the potential to be bound by multiple antibodies, each of which is specific to one of the antigen's epitopes. Using the "lock and key" metaphor, the antigen can be seen as a string of keys (epitopes) each of which matches a different lock (antibody). Different antibody idiotypes, each have distinctly formed complementarity-determining regions.
https://en.m.wikipedia.org/wiki/Antigen
Researchers led by Qiang Zhou, a research fellow at Westlake University in Hangzhou, China, have revealed how the new virus attaches to a receptor on respiratory cells called angiotensin-converting enzyme 2, or ACE2.
"They have pictures all the way down at the level of the atoms that interact at the binding interface," Thomas Gallagher, a virologist at Loyola University Chicago who was not involved in the new research but studies coronavirus structure, told Live Science. That level of information is unusual at this stage of a new virus outbreak, he said.
Coronavirus structure implications
The structure of SARS-CoV-2's "key" and the body's "lock" could theoretically provide a target for antiviral drugs that would stop the new coronavirus from getting into new cells. Most antiviral drugs already on the market focus on halting viral replication within the cell, so a drug that targeted viral entry would be new territory, Gallagher said.
https://www.livescience.com/how-coronavirus-infects-cells.html
“You have more than you know”
A Higher Loyalty [Y].