Table 1 The most abundant residues and coordination geometries (signature) of each metal.

From: Transition metal binding selectivity in proteins and its correlation with the phylogenomic classification of the cation diffusion facilitator protein family

Metal

Dominant residue(s)

Dominant geometry

Zn

Cys, His

Tetrahedral

Cd

Glu (Asp)

Diverse

Mn

Asp (Glu, His)

Octahedral

Fe2+

His, Glu

Octahedral

Fe3+

His (Glu)

Octahedral

Co

His (Asp, Glu)

Octahedral

Ni

His

Octahedral

Cu

His

Trigonal plane

  1. Residues in parentheses are highly represented but not the most abundant residues.
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