Atom Nomenclature for XMC

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 XMC

Atom Name (V3) Atom Name (V2)
C1 C1
C2 C2
C3 C3
C4 C4
C5 C5
C6 C6
CL7 CL7
C8 C8
C9 C9
C10 C10
C11 C11
S12 S12
O13 O13
C14 C14
O15 O15
C16 C16
N17 N17
C18 C18
C19 C19
O20 O20
N21 N21
C22 C22
C23 C23
O24 O24
C25 C25
C26 C26
C27 C27
N28 N28
O29 O29
C30 C30
C31 C31
N32 N32
C33 C33
C34 C34
C35 C35
C36 C36
C37 C37
C38 C38
C39 C39
N40 N40
C41 C41
C42 C42
H1 H1
H4 H4
H5 H5
H8 H8
H9 H9
H10 H10
H161 1H16
H162 2H16
H18 H18
H221 1H22
H222 2H22
H231 1H23
H232 2H23
H251 1H25
H252 2H25
H261 1H26
H262 2H26
H271 1H27
H272 2H27
H301 1H30
H302 2H30
H31 H31
H34 H34
H351 1H35
H352 2H35
H36 H36
H371 1H37
H372 2H37
H38 H38
H391 1H39
H392 2H39
H41 H41
H421 1H42
H422 2H42