Atom Nomenclature for CTA

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 CTA

Atom Name (V3) Atom Name (V2)
C1 C1
C2 C2
C3 C3
C4 C4
N5 N5
C6 C6
C7 C7
N8 N8
C9 C9
C10 C10
C11 C11
N12 N12
C13 C13
C14 C14
C15 C15
C16 C16
C17 C17
N18 N18
C19 C19
C20 C20
C21 C21
N22 N22
O23 O23
C24 C24
C25 C25
C26 C26
C27 C27
C28 C28
C29 C29
C30 C30
O31 O31
O32 O32
C33 C33
C34 C34
C35 C35
C36 C36
C37 C37
C38 C38
C39 C39
O40 O40
O41 O41
C42 C42
C43 C43
C44 C44
N45 N45
C46 C46
N47 N47
N48 N48
O49 O49
O50 O50
N51 N51
C52 C52
O53 O53
H2 H2
H3 H3
H4 H4
H5 H5
H7 H7
H8 H8
H11 H11
H12 H12
H14 H14
H151 1H15
H152 2H15
H161 1H16
H162 2H16
H171 1H17
H172 2H17
H20 H20
H211 1H21
H212 2H21
H22 H22
H241 1H24
H242 2H24
H26 H26
H27 H27
H29 H29
H30 H30
H31 H31
H331 1H33
H332 2H33
H35 H35
H36 H36
H37 H37
H38 H38
H39 H39
H421 1H42
H422 2H42
H431 1H43
H432 2H43
H441 1H44
H442 2H44
H45 H45
H471 1H47
H472 2H47
H48 H48
H51 H51
H52 H52