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The protein-protein complex of RBD of Spike protein (magenta) and the ACE-2 receptor (yellow) are shown as cartoon. A large number of polar residues from the Spike protein interact with the ACE2 receptor by hydrogen bonding and hydrophobic interactions (Table 5). The primary residues from the Spike protein which interact with the ACE2 are shown as sticks and colored by CPK. (Colour, Double-column fitting image).
