ACE2 : S1 RBD Interaction-Targeted Peptides and Small Molecules as Potential COVID-19 Therapeutics

Table 1

Summary of selectivity indices of peptides and small molecules tested against ACE2 : S1 RBD binding.

Peptide	Selectivity index (SI)	Small molecule	Selectivity index (SI)
Pep 1	>200	SSAA09E2	Not determined
Pep 2	>200	VE607	9.4
Pep 3	>200	Emodin	90
Pep 4	>200	Cepharanthine	>200
Pep 5	>200	N/A	—
Pep 6	>200	N/A	—