See Hungate et al., 2015 for more details
calc_atom_excess_MAGs(Mlab, Mlight, Mheavymax, isotope = "13C")numeric value: atom fraction excess (A)
The molecular wight of labeled DNA
The molecular wight of unlabeled DNA
The theoretical maximum molecular weight of fully-labeled DNA
The isotope for which the DNA is labeled with ('13C', '18O', '15N')