The file Na_Nc.dat contains data for 91 single domain proteins which
do not have hydrogen atoms in their pdb files. The first column is the
pdb name of proteins, the second column is the number of heavy atoms
in the proteins, and the third column is the number of non-bounded
alpha contacts formed by all heavy atoms. The data for additional
proteins of single domain and other contact types will be added soon.

Jinfeng Zhang and Jie Liang
5/9/2003

jzhang10@uic.edu and jliang@uic.edu