Atom Nomenclature for TDY

The atom nomenclature in PDB data files was revised with the release of data in the PDB Format Version 3.0. These changes make the PDB atom names used by PDB compliant with existing IUPAC nomenclature for standard amino acid and nucleotides (Pure & Appl. Chem., 70, 117-142, 1998) with the exception of the well established convention for C-terminal atoms OXT and HXT. A small number of additional changes were introduced in Version 3 to make atom labeling more conventional. The following chemical diagrams and tables provide the correspondences between atom names used in Version 3 and Version 2 PDB formats.

Labeled Chemical Diagrams

Chemical diagram with format V3 atom labels (heavy atoms)
Chemical diagram with format V3 atom labels (all atoms)
Chemical diagram with format V2 atom labels (heavy atoms)
Chemical diagram with format V2 atom labels (all atoms)

Atom Name Correspondences for TDY

Atom Name (V3) Atom Name (V2)
P P
OP1 OP1
O5' O5'
C5' C5'
C4' C4'
O4' O4'
C3' C3'
O3' O3'
C2' C2'
C1' C1'
N1 N1
C2 C2
O2 O2
N3 N3
C4 C4
O4 O4
C5 C5
C5M C5M
C6 C6
N5 N5
OP2 OP2
CM5 CM5
OP3 OP3
HA HA
HP3 HP3
HA1 HA1
HB2 HB2
HB HB
HC HC
HD HD
H3' H3'
HB1 HB1
HC2 HC2
H61C H61C
H62C H62C
H3 H3
H5M1 H5M1
H5M2 H5M2
H5M3 H5M3
H51N H51N
HM51 HM51
HM52 HM52
HM53 HM53