Atom Nomenclature for NPM

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 NPM

Atom Name (V3) Atom Name (V2)
N11 N11
N12 N12
N13 N13
N14 N14
C1A C1A
C1B C1B
C1C C1C
C1D C1D
C1E C1E
C1F C1F
C1G C1G
C1H C1H
C1I C1I
C1J C1J
C1K C1K
C1L C1L
C1M C1M
C1N C1N
C1O C1O
C1P C1P
C1Q C1Q
C1R C1R
C1S C1S
C1T C1T
C1U C1U
C1V C1V
C1W C1W
C1X C1X
C1Y C1Y
H1A H1A
H1B H1B
H1C H1C
H1D H1D
H1F H1F
H1H H1H
H1I H1I
H1K H1K
H1L H1L
H1M1 H1M1
H1M2 H1M2
H1O H1O
H1P H1P
H1R H1R
H1S H1S
H1T H1T
H1V H1V
H1W H1W
H1X H1X
H1Y H1Y