| General information | |
| ACovPid: | ACoVP100064 |
| Trivial Name: | EK1 |
| Amino Acids Sequence: | SLDQINVTFLDLEYEMKKLEEAIKKLEESYIDLKEL |
| Length: | 36 |
| C-Terminal Modification: | None |
| N-Terminal Modification: | None |
| Chemical Modification: | None |
| Peptide Source: | Human coronavirus OC43 (HCoV-OC43) : 31631 |
| Source Description: | Peptide OC43-HR2P was derived from the HR2 domain of HCoV-OC43. EK1 was the optimized form of OC43-HR2P,and EK1C4 was the optimized form of EK1. |
| Against Virus: | Human coronavirus NL63 (HCoV-NL63) : 277944 |
| Inhibition Value Type: | IC50 |
| Inhibitory Effect: | 3.693 |
| Inhibitory Unit: | µM |
| Target Domain Name: | HR1 domain of HCoV-NL63 |
| Assay: | Inhibition of live HCoV replication |
| Assay Description: | The inhibition assay for live SARS-CoV-2 and MERS-CoV was performed in a biosafety level 3 (BSL3) facility at the Wuhan Research Institute and Beijing Key Laboratory for Animal Models of Emerging and Re-emerging Infectious Diseases, respectively.6 Inhibition activity of peptides on SARS-CoV-2 and MERS-CoV was determined by plaque reduction assay. Peptides with different dilution concentrations were mixed with SARS-CoV-2 (100 TCID50) for 30 min and then added to monolayer VERO-E6 cells. After adsorption at 37 °C, the supernatant was removed, and 0.9% methyl cellulose was overlaid on the cells. After 72 h, the plates were fixed and stained. Plaques were counted by fixing with 4% paraformaldehyde and staining with 0.1% crystal violet. To test the effect of peptide on HCoV-OC43, HCoV-229E and HCoV-NL63 replication, 50 µL of 100 TCID50 virus were mixed with an equal volume of peptide and incubated at 37 °C for 1 h. Afterwards, the mixture was added to RD, Huh-7 and LLC-MK2 cells, respectively. Cell Counting Kit-8 (CCK8, Dojindo, Kumamoto, Kyushu, Japan) assay was applied to determine cytopathic effect. |
| Anti-CoV activity in vivo: | |
| Reference: | 32231345 |
| Comment: | |
| 3D structure: | |
| Structure Experiment Verified: | NO |
| Similar Peptides: | ACoVP100015 ACoVP100014 ACoVP100013 ACoVP100001 ACoVP100011 |
| Target Domain information | |
| Target Domain Full Name: | Heptad repeat 1 (HR1) domain of Human coronavirus NL63 (HCoV-NL63) spike glycoprotein |
| Target Type: | glycoprotein |
| UniprotID [Sequence]: | Q6Q1S2 [948-1067] |
| Target Synonyms: | Alternative name(s) for spike glycoprotein: E2 Peplomer protein S glycoprotein |
| Target Source: | Human coronavirus NL63 (HCoV-NL63) : 277944 |
| Target Structure: | 2IEQ, 3KBH, 5SZS, 7KIP |