All-Atom Four-Body Knowledge-Based Statistical Potentials to Distinguish Native Protein Structures from Nonnative Folds

Table 7

Summary data for the 1417 PDB coordinate files.

Atom types	Count	Proportion
C (carbon)	3612988	0.633193
N (nitrogen)	969253	0.169866
O (oxygen)	1088410	0.190749
S (sulfur)	28502	0.004995
M (all metals)	2529	0.000443
X (all other nonmetals)	4299	0.000754
Total atom count	5705981
Total tetrahedron count	36406467