Atom Nomenclature for MID

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 MID

Atom Name (V3) Atom Name (V2)
S S1
O1S O1
O2S O2
C1 C1
C2 C2
C3 C3
C4 C4
C5 C5
C6 C6
C7 C7
C8 C8
C9 C9
C10 C10
N N1
CA C11
C C12
O O4
N1 N2
CA1 C13
CB C14
O1 O6
CB1 C15
CG C16
CD1 C17
CD2 C18
CE1 C19
CE2 C20
CZ C21
CF C22
NG1 N3
NG2 N4
N11 N5
C21 C23
C31 C24
C41 C25
C51 C26
C61 C27
H1 H2
H3 H3
H4 H4
H5 H5
H6 H6
H7 H7
H8 H8
H H9
HA2 H11
HA3 H12
H2 H14
HA H16
HB2 H17
HB3 H18
HD1 H19
HD2 H20
HE1 H21
HE2 H22
HG1 H23
HG21 H24
HG22 H25
H21 H28
H22 H29
H31 H30
H32 H31
H41 H32
H42 H33
H51 H34
H52 H35
H61 H36
H62 H37