Atom Nomenclature for MH4

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 MH4

Atom Name (V3) Atom Name (V2)
O23 O23
C21 C21
N22 N22
C32 C32
C33 C33
C38 C38
C37 C37
N36 N36
C35 C35
C39 C39
C34 C34
C20 C20
C16 C16
C8 C8
N19 N19
N18 N18
C24 C24
C17 C17
C10 C10
N15 N15
C14 C14
N13 N13
C12 C12
C11 C11
C9 C9
N1 N1
C2 C2
C7 C7
C6 C6
C5 C5
C4 C4
C3 C3
N25 N25
C30 C30
C29 C29
N28 N28
C31 C31
C27 C27
C26 C26
H22 H22
H321 H321
H322 H322
H38 H38
H34 H34
H37 H37
H391 H391
H392 H392
H393 H393
H81C H81C
H82C H82C
H91C H91C
H92C H92C
H241 H241
H242 H242
H243 H243
H1 H1
H12 H12
H7 H7
H3 H3
H6 H6
H4 H4
H301 H301
H302 H302
H261 H261
H262 H262
H291 H291
H292 H292
H311 H311
H312 H312
H313 H313
H271 H271
H272 H272