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. 2020 Mar 26;10(4):313–319. doi: 10.1016/j.jpha.2020.03.009

Table 1.

Physicochemical parameters of SARS-CoV-2 3CLpro.

Parameters SARS-CoV-2 3CLpro
Mol. Weight 33796.64 Dalton
No. of amino acids 306
Theoretical pI 5.95
Instability index (II) 27.65 (stable)
No. of negatively charged residues (Asp + Glu) 26
No. of positively charged residues (Arg + Lys) 22
Aliphatic index 82.12
Grand average of hydropathicity (GRAVY) −0.019
Atomic composition Carbon-1499; Hydrogen-2318; Nitrogen-402; Oxygen-445; Sulfur-22
Amino acid composition Ala-17 (5.6%); Arg-11 (3.6%); Asn-21 (6.9%); Asp-17 (5.6%); Cys-12 (3.9%); Gln-14 (4.6%); Glu-9 (2.9%); Gly-26 (8.5%); His-7 (2.3%); Ile-11 (3.6%); Leu-29 (9.5%); Lys-11 (3.6%); Met-10 (3.3%); Phe-17 (5.6%); Pro-13 (4.2%); Ser-16 (5.2%); Thr-24 (7.8%); Trp-3 (1.0%); Tyr-11 (3.6%); Val-27 (8.8%); Pyl-0 (0.0%); Sec-0 (0.0%)