Table 4.

Total number of distinct atomic ligands found covalently bound to cysteine residues in the UPMA dataset.

Cys-bound atom	Examples
As	2
Au	1
C	89
Cd	39
Cu	10
Fe	185
H	1
Hg	24
Mn	1
Ni	6
Pb	1
S	27
U	2
Zn	225