Atom Nomenclature for IPY

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 IPY

Atom Name (V3) Atom Name (V2)
C C
C1 C1
C2 C2
C3 C3
C4 C4
C5 C5
C6 C6
C8 C8
C9 C9
C10 C10
C11 C11
C12 C12
C13 C13
C14 C14
C15 C15
C16 C16
C18 C18
C19 C19
C20 C20
C21 C21
C22 C22
C23 C23
C24 C24
C25 C25
C26 C26
C27 C27
C28 C28
C29 C29
C30 C30
C31 C31
C32 C32
O1 O1
O2 O2
O3 O3
O4 O4
O5 O5
N N
N1 N1
N3 N3
N4 N4
N5 N5
N6 N6
N7 N7
N8 N8
N9 N9
N10 N10
N11 N11
H1 H1
H2 H2
H31 1H3
H32A 2H3
H33 3H3
H8 H8
H91 1H9
H92 2H9
H93 3H9
H13 H13
H14 H14
H151 1H15
H152 2H15
H153 3H15
H181 1H18
H182 2H18
H191 1H19
H192 2H19
H201 1H20
H202 2H20
H211 1H21
H212 2H21
H213 3H21
H221 1H22
H222 2H22
H223 3H22
H26 H26
H27 H27
H281 1H28
H282 2H28
H283 3H28
H291 1H29
H292 2H29
H301 1H30
H302 2H30
H32 H32
HN1 HN1
HN4 HN4
HN6 HN6
HN7 HN7
HN8 HN8
H11 H11