Atom Nomenclature for AXQ

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 AXQ

Atom Name (V3) Atom Name (V2)
S1 S1
C2 C2
C5 C5
N7 N7
C9 C9
C10 C10
N12 N12
C14 C14
C15 C15
C17 C17
S20 S20
C21 C21
C24 C24
C26 C26
C28 C28
N31 N31
C33 C33
O34 O34
O35 O35
C36 C36
C37 C37
C41 C41
C45 C45
O49 O49
C50 C50
O54 O54
C55 C55
O57 O57
C59 C59
C62 C62
C64 C64
C68 C68
O69 O69
N70 N70
C72 C72
C74 C74
C76 C76
C80 C80
C84 C84
O85 O85
N86 N86
C88 C88
C91 C91
C94 C94
C97 C97
H21 1H2
H22 2H2
H5 H5
HN7 HN7
H10 H10
H12 H12
H15 H15
H171 1H17
H172 2H17
H211 1H21
H212 2H21
H24 H24
H26 H26
H281 1H28
H282 2H28
H31 H31
H371 1H37
H372 2H37
H373 3H37
H411 1H41
H412 2H41
H413 3H41
H451 1H45
H452 2H45
H453 3H45
H501 1H50
H502 2H50
H503 3H50
H55 H55
H57 H57
H591 1H59
H592 2H59
H62 H62
H641 1H64
H642 2H64
H643 3H64
H70 H70
H72 H72
H74 H74
H761 1H76
H762 2H76
H763 3H76
H801 1H80
H802 2H80
H803 3H80
H86 H86
H881 1H88
H882 2H88
H911 1H91
H912 2H91
H941 1H94
H942 2H94
H971 1H97
H972 2H97
H973 3H97