Atom Nomenclature for EPH

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 EPH

Atom Name (V3) Atom Name (V2)
C1 C1
C2 C2
C4 C4
O2 O2
O4 O4
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
C33 C33
C34 C34
C37 C37
O5 O5
C3 C3
O1 O1
O3 O3
C5 C5
C6 C6
C7 C7
C8 C8
C9 C9
C10 C10
C11 C11
C12 C12
C13 C13
C14 C14
C15 C15
C16 C16
C17 C17
C35 C35
C36 C36
P1 P1
O6 O6
O7 O7
O8 O8
C38 C38
C39 C39
N1 N1
H11 1H1
H12A 2H1
H2 H2
H181 1H18
H182 2H18
H191 1H19
H192 2H19
H201 1H20
H202 2H20
H211 1H21
H212 2H21
H221 1H22
H222 2H22
H231 1H23
H232 2H23
H24 H24
H25 H25
H261 1H26
H262 2H26
H271 1H27
H272 2H27
H28 H28
H29 H29
H301 1H30
H302 2H30
H311 1H31
H312 2H31
H32 H32
H33 H33
H341 1H34
H342 2H34
H343 3H34
H371 1H37
H372 2H37
H51 1H5
H52 2H5
H61 1H6
H62 2H6
H71 1H7
H72 2H7
H81 1H8
H82 2H8
H91 1H9
H92 2H9
H101 1H10
H102 2H10
H111 1H11
H112 2H11
H12 H12
H13 H13
H141 1H14
H142 2H14
H15 H15
H16 H16
H171 1H17
H172 2H17
H351 1H35
H352 2H35
H361 1H36
H362 2H36
H363 3H36
HO6 HO6
H381 1H38
H382 2H38
H391 1H39
H392 2H39
HN11 1HN1
HN12 2HN1