Atom Nomenclature for MFC

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 MFC

Atom Name (V3) Atom Name (V2)
N1 N
CA1 CA1
CB1 CB1
CG1 CG1
OG1 OG1
C1 C1
N2 N2
N3 N3
C2 C2
O2 O2
CA2 CA2
CA3 CA3
C3 C
O3 O
CB2 CB2
CG2 CG2
CD1 CD1
CD2 CD2
CE1 CE1
CE2 CE2
F F
CZ CZ
OH OH
OXT OXT
H H
H2 HN2
HA1 HA1
HB1 HB1
HG11 HG11
HG12 HG12
HG13 HG13
HG1 HG1
HA31 HA31
HA32 HA32
HB2 HB2
HD1 HD1
HD2 HD2
HE1 HE1
HOH HOH
HXT HXT