VIRAL PROTEIN/IMMUNE SYSTEM CRYSTAL STRUCTURE OF RECEPTOR BINDING DOMAIN OF SARS-COV-2 SPIKE GLYCOPROTEIN IN COMPLEX WITH EY6A FAB: 0 - H ARG 87 NH2 VS A ASN 440 O Distance: 3.555240 - Hydrogen Bonds, 1 - H ARG 87 NH2 VS A SER 443 O Distance: 4.822050 - Hydrogen Bonds,