. Author manuscript; available in PMC: 2008 Dec 11.

Published in final edited form as: Structure. 2007 Nov;15(11):1442–1451. doi: 10.1016/j.str.2007.09.010

Table 1.

The median non-synonymous substitution rates (dN) for the 4 structural subsets. “High exp” and “low exp” constitute the 17.5% highest and lowest expressed genes found in our dataset. “High ab” and “low ab” constitute the 17.5% most and least abundant proteins in our dataset.

Structural subset	total	high exp.	low exp.	high ab.	low ab.
Structural subset	dN	dN	dN	dN	dN
Core	0.22	0.12	0.38	0.18	0.26
Buried interface	0.23	0.02	0.36	0.11	0.24
Surface	0.36	0.19	0.53	0.28	0.42
Surface interface	0.27	0.17	0.47	0.21	0.36