!Nucleic Acid Pseudoatom Nomenclature !BMRB = BioMagResBank, derived from the 1998 !IUPAC-IUBMB-IUPAB Recommendations ! Deoxyribonucleotides !NA NA BMRB !--- --- ---- DA dAMP Q6 DA dAMP Q2' DA dAMP Q5' DC dCMP Q4 DC dCMP Q2' DC dCMP Q5' DG dGMP Q2 DG dGMP Q2' DG dGMP Q5' DT dTMP M7 DT dTMP Q2' DT dTMP Q5' ! Ribonucleotides !NA NA BMRB !--- --- ---- A AMP Q6 A AMP Q5' C CMP Q4 C CMP Q5' G GMP Q2 G GMP Q5' I IMP Q5' U UMP U UMP Q5'