RNA(n) + ATP <=> RNA(n)-3'-adenine ribonucleotide + diphosphate
rna(n) + atp <=> rna(n)-3'-adenine ribonucleotide + diphosphate
RNA(n) + ATP <=> RNA(n)-3'-adenine ribonucleotide + diphosphate
rna(n) + atp <=> rna(n)-3'-adenine ribonucleotide + diphosphate