is part of part_of part of part of part_of has part has part has_part is AA variant of has mutated from has amino acid position lysine arginine N-RG203KR RG203KR in SARS-CoV-2 N protein AA variant in SARS-CoV-2 N protein LKR region SARS-CoV-2 BA.2 virus R203K in SARS-CoV-2 N protein 203 https://cov-lineages.org/ An AA variant that has mutated an amino acid at position 203 into a lycine. N-G204R