Atom Nomenclature for TDT

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 TDT

Atom Name (V3) Atom Name (V2)
PN PN
O1N O1N
O2N O2N
O3P O3P
O5M O5M
C5M C5M
C4M C4M
O4M O4M
C3M C3M
O3M O3M
C2M C2M
O2M O2M
C1M C1M
N1N N1N
C6N C6N
C5N C5N
C4N C4N
C3N C3N
C2N C2N
C7N C7N
O7N O7N
N7N N7N
PA PA
O1A O1A
O2A O2A
O5B O5B
C5B C5B
C4B C4B
O4B O4B
C3B C3B
O3B O3B
C2B C2B
O2B O2B
C1B C1B
N9A N9A
C4A C4A
N3A N3A
C2A C2A
N1A N1A
C6A C6A
C5A C5A
N7A N7A
C8A C8A
N6A N6A
C C
C1 C1
N N
O O
C2 C2
C3 C3
C4 C4
C5 C5
C6 C6
C7 C7
C8 C8
C9 C9
C10 C10
C11 C11
C12 C12
C13 C13
C15 C15
N1 N1
C16 C16
C17 C17
C18 C18
N2 N2
S S
C19 C19
N3 N3
N4 N4
H5M1 1H5M
H5M2 2H5M
H4M H4M
H3M H3M
H1 H1
H2M H2M
H2 H2
H1M H1M
H6N H6N
H5N H5N
H4N H4N
H2N H2N
H7N1 1H7N
H7N2 2H7N
H5B1 1H5B
H5B2 2H5B
H4B H4B
H3B H3B
H2B H2B
H1B H1B
H2A H2A
H8A H8A
H6A1 1H6A
H6A2 2H6A
H H
H21 1H2
H22 2H2
H31 1H3
H32 2H3
H41 1H4
H42 2H4
H51 1H5
H52 2H5
H61 1H6
H62 2H6
H71 1H7
H72 2H7
H9 H9
H10 H10
H11 H11
H12 H12
H13 H13
H15 H15
H19 H19