Coronavirus Fusion Inhibitor Peptides

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EK1 Peptide: The Pan-Coronavirus Fusion Inhibitor

EK1 is a 36-amino-acid peptide that blocks all tested human coronaviruses by targeting the spike HR1 domain. IC50: 0.19 to 0.62 micromolar across 5 HCoVs.

19 min read|Mar 20, 2026

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Coronavirus Fusion Inhibitor Peptides

Antiviral Peptides and SARS-CoV-2: Pandemic Lessons

How antiviral peptides performed against SARS-CoV-2, from fusion inhibitors to defensins. Nine classes tested, nanomolar potency achieved, zero approved.

15 min read|Mar 21, 2026