Atom Nomenclature for XLI

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 XLI

Atom Name (V3) Atom Name (V2)
C C
O O
CH3 CH3
N N
CA CA
C1 C1
O1 O1
CB CB
CG CG
CD1 CD1
CD2 CD2
N1 N1
CA1 CA1
C2 C2
O2 O2
CB1 CB1
CG1 CG1
SD SD
CE CE
N2 N2
CA2 CA2
C3 C3
O3 O3
CB2 CB2
CG2 CG2
CD11 CD11
CD21 CD21
CM CM
CA3 CA3
CB3 CB3
C4 C4
O4 O4
C11 C11
N3 N3
C21 C21
C31 C31
C41 C41
H1 H1
H2 H2
H3 H3
H H
HA HA
HB2 HB2
HB3 HB3
HG HG
HD11 HD11
HD12 HD12
HD13 HD13
HD21 HD21
HD22 HD22
HD23 HD23
H4 H4
HA1 HA1
HB21 HB21
HB31 HB31
HG2 HG2
HG3 HG3
HE1 HE1
HE2 HE2
HE3 HE3
H5 H5
HA2 HA2
HB22 HB22
HB32 HB32
HG1 HG1
HD14 HD14
HD15 HD15
HD16 HD16
HD24 HD24
HD25 HD25
HD26 HD26
H51 H51
H52 H52
HM2 HM2
HM3 HM3
HA3 HA3
HB1 HB1
HB23 HB23
HB33 HB33
H11 H11
H12 H12
HN2 HN2
H21 H21
H22 H22
H31 H31
H32 H32
H41 H41
H42 H42
H43 H43