Atom Nomenclature for GTA

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 GTA

Atom Name (V3) Atom Name (V2)
N2 N2
O6 O6
C6 C6
C5 C5
N7 N7
C7 C7
C8 C8
N9 N9
C4 C4
N3 N3
C2 C2
N1 N1
O3A O3A
C1A C1A
C2A C2A
C3A C3A
C4A C4A
C5A C5A
O4A O4A
O2A O2A
P1 P1
O11 O11
O12 O12
O13 O13
O15 O15
P2 P2
O22 O22
O21 O21
O23 O23
P3 P3
O32 O32
O31 O31
O33 O33
C5B C5B
C4B C4B
O4B O4B
C3B C3B
O3B O3B
C2B C2B
O2B O2B
C1B C1B
N9C N9C
C8C C8C
N7C N7C
C5C C5C
C6C C6C
N6C N6C
N1C N1C
C2C C2C
N3C N3C
C4C C4C
HN21 1HN2
HN22 2HN2
H71 1H7
H72 2H7
H73 3H7
H8 H8
HN1 HN1
HO3A AHO3
H1A H1A
H2A H2A
H3A H3A
H4A H4A
H5A1 1H5A
H5A2 2H5A
HO2A AHO2
H122 2H12
H222 2H22
H322 2H32
H5B1 1H5B
H5B2 2H5B
H4B H4B
H3B H3B
HO3B BHO3
H2B H2B
HO2B BHO2
H1B H1B
H8C H8C
HN61 1HN6
HN62 2HN6
H2C H2C