6.5.1.3	ATP + (ribonucleotide)n + (ribonucleotide)m	only the di-magnesium-coordinated form Mg2ATP0 reacts with the enzyme, forming the covalent complex E-AMP, the reverse reaction, ATP synthesis, occurs between the mono-magnesium-coordinated diphosphate from MgP2O72- and the enzyme-MgAMP complex	Tequatrovirus T4	AMP + diphosphate + (ribonucleotide)n+m	-	r	813