Atom Nomenclature for M3L

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 M3L

Atom Name (V3) Atom Name (V2)
N N
CA CA
CB CB
CG CG
CD CD
CE CE
NZ NZ
C C
O O
OXT OXT
CM1 CM1
CM2 CM2
CM3 CM3
H 1HN
H2 2HN
HA HA
HB2 1HB
HB3 2HB
HG2 1HG
HG3 2HG
HD2 1HD
HD3 2HD
HE2 1HE
HE3 2HE
HXT HXT
HM11 1HM1
HM12 2HM1
HM13 3HM1
HM21 1HM2
HM22 2HM2
HM23 3HM2
HM31 1HM3
HM32 2HM3
HM33 3HM3