Table 3.

Summarized size and shape descriptors and drug score values for the selected active sites of the analysed protein targets

Protein target	Size and shape descriptors				Drug score
	Volume (Å3)	Surface (Å2)	Depth (Å)	Enclosure
S glycoprotein	404.61	682.33	19.30	0.24	0.79
ACE2	876.74	1068.47	23.22	0.11	0.83
Furin	545.34	635.62	15.99	0.11	0.73
TMPRSS2	525.12	813.49	21.77	0.10	0.84

Å – (ångström) is a metric non-SI unit of length equal to 10⁻¹⁰ m; ACE2- angiotensin converting enzyme 2; TMPRSS2 – transmembrane serine protease 2