Atom Nomenclature for IXS

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 IXS

Atom Name (V3) Atom Name (V2)
O2 O2
S1 S1
O1 O1
C22 C22
N24 N24
C29 C29
C19 C19
C20 C20
C15 C15
C14 C14
O5 O5
N13 N13
C12 C12
C50 C50
C5 C5
C6 C6
C7 C7
C4 C4
C3 C3
C2 C2
F1 F1
C18 C18
C17 C17
C16 C16
C34 C34
O4 O4
N35 N35
C36 C36
C56 C56
C58 C58
C65 C65
C64 C64
C63 C63
C62 C62
C61 C61
C37 C37
N38 N38
C39 C39
C8 C8
C1 C1
O3 O3
N9 N9
C10 C10
C51 C51
C52 C52
C53 C53
H221 1H22
H222 2H22
H223 3H22
H291 1H29
H292 2H29
H293 3H29
H20 H20
HN13 HN13
H12 H12
H501 1H50
H502 2H50
H503 3H50
H6 H6
H7 H7
H4 H4
H3 H3
H18 H18
H16 H16
HN35 HN35
H36 H36
H561 1H56
H562 2H56
H65 H65
H64 H64
H63 H63
H62 H62
H61 H61
H371 1H37
H372 2H37
HN38 HN38
H39 H39
H81 1H8
H82 2H8
H83 3H8
HN9 HN9
H101 1H10
H102 2H10
H51 H51
H521 1H52
H522 2H52
H523 3H52
H531 1H53
H532 2H53
H533 3H53