Atom Nomenclature for B96

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 B96

Atom Name (V3) Atom Name (V2)
C1 C1
O1 O1
N2 N2
C3 C3
C4 C4
C5 C5
C6 C6
C31 C31
C32 C32
C33 C33
C34 C34
C7 C7
C8 C8
N9 N9
C10 C10
C14 C14
C13 C13
N12 N12
N11 N11
C15 C15
C17 C17
C18 C18
C19 C19
C16 C16
C20 C20
C21 C21
C22 C22
C23 C23
C24 C24
C25 C25
O41 O41
C42 C42
C43 C43
N44 N44
C45 C45
C46 C46
O47 O47
C48 C48
C49 C49
H2 H2
H31 H31
H32 H32
H33 H33
H34 H34
H7 H7
H8 H8
H9 H9
H14 H14
H171 1H17
H172 2H17
H173 3H17
H181 1H18
H182 2H18
H183 3H18
H191 1H19
H192 2H19
H193 3H19
H20 H20
H21 H21
H23 H23
H24 H24
H251 1H25
H252 2H25
H253 3H25
H421 1H42
H422 2H42
H431 1H43
H432 2H43
H451 1H45
H452 2H45
H461 1H46
H462 2H46
H481 1H48
H482 2H48
H491 1H49
H492 2H49