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. 2021 Aug 4;28:18. doi: 10.1186/s40709-021-00149-2

Table 10.

Possible binding sites of NSP15 against known anti-viral drugs

Drugs Total binding sites (6VWW) NSP15 endoribonuclease of COVID-19
Amprenavir Known similar target molecule Protease, HIV-1
Binding properties 2 1 Superposition type L
RMSD 0.90 Å
Amino acid targets of drug

72 ILE

157 GLY

156 VAL

No. of residues in known binding 25
Human similar targets 4
2 Superposition type L
RMSD 0.66 Å
Amino acid targets of drug

251 LEU

276 VAL

296 ILE

No. of residues in known binding 19
Human similar targets 5
Atazanavir Known similar target molecule Protease, HIV-1
Binding properties 1 1 Superposition type L
RMSD 0.83 Å
Amino acid targets of drug

72 ILE

157 GLY

156 VAL

No. of residues in known binding 24
Human similar targets 4
Darunavir Known similar target molecule Protease, HIV-2
Binding properties 5 1 Superposition type L
RMSD 1.00 Å
Amino acid targets of drug

3 LEU

23 VAL

6 VAL

No. of residues in known binding 20
Human similar targets 6
2 Superposition type L
RMSD 0.95 Å
Amino acid targets of drug

72 ILE

157 GLY

156 VAL

No. of residues in known binding 20
Human similar targets 10
3 Superposition type R
RMSD 0.77 Å
Amino acid targets of drug

73 LEU

80 ILE

86 ILE

No. of residues in known binding 22
Human similar targets 12
4 Superposition type R
RMSD 0.91 Å
Amino acid targets of drug

300 LEU

212 ILE

253 ILE

No. of residues in known binding 22
Human similar targets 12
5 Superposition type L
RMSD 0.77 Å
Amino acid targets of drug

300 LEU

296 ILE

253 ILE

No. of residues in known binding 22
Human similar targets 12
Indinavir Known similar target molecule

Protease retropepsin,

HIV-1

Binding properties 3 1 Superposition type R
RMSD 0.99 Å
Amino acid targets of drug

122 VAL

119 PRO

80 ILE

No. of residues in known binding 21
Human similar targets 6
2 Superposition type R
RMSD 0.87 Å
Amino acid targets of drug

173 VAL

170 GLY

169 ILE

No. of residues in known binding 21
Human similar targets 3
3 Superposition type L
RMSD 0.96 Å
Amino acid targets of drug

321 VAL

344 PRO

323 ILE

No. of residues in known binding 21
Human similar targets 6
Lopinavir Known similar target molecule

Protease,

HIV-1

Binding properties 3 1 Superposition type R
RMSD 0.90 Å
Amino acid targets of drug

122 VAL

119 PRO

80 ILE

No. of residues in known binding 23
Human similar targets 6
2 Superposition type R
RMSD 0.80 Å
Amino acid targets of drug

247 GLY

248 GLY

236 ILE

No. of residues in known binding 27
Human similar targets 6
3 Superposition type L
RMSD 0.89 Å
Amino acid targets of drug

321 VAL

344 PRO

323 ILE

No. of residues in known binding 23
Human similar targets 6
Saquinavir Known similar target molecule Protease, HIV-1
Binding properties 3 1 Superposition type L
RMSD 0.81 Å
Amino acid targets of drug

72 ILE

157 GLY

156 VAL

No. of residues in known binding 31
Human similar targets 11
2 Superposition type R
RMSD 0.92 Å
Amino acid targets of drug

122 VAL

119 PRO

80 ILE

No. of residues in known binding 31
Human similar targets 5
3 Superposition type L
RMSD 0.68 Å
Amino acid targets of drug

321 VAL

344 PRO

323 ILE

No. of residues in known binding 22
Human similar targets 9
Tipranavir Known similar target molecule Protease, HIV-1
Binding properties 1 1 Superposition type L
RMSD 0.88 Å
Amino acid targets of drug

72 ILE

157 GLY

156 VAL

No. of residues in known binding 27
Human similar targets 3
Torimifene Known similar target molecule

ENV, Glycoprotein-1,

Zaire ebola virus

Binding properties 1 1 Superposition type L
RMSD 0.88 Å
Amino acid targets of drug

72 ILE

157 GLY

156 VAL

No. of residues in known binding 27
Human similar targets 3

Features of different drug binding motifs. HIV-1 Human Immunodeficiency virus 1, RMSD Root Mean Square Deviation, Å angstrom, ILE isoleucine, GLY glycine, VAL valine, LEU leucine, PRO proline, ASP aspartic acid