. 2012 Mar 22;13:43. doi: 10.1186/1471-2105-13-43

Table 6.

Correlation coefficients of codon usage bias with gene expression level

Data^a	E. coli¹		S. cerevisiae²	D. melanogaster³	C. elegans⁴	A. thaliana⁵

	LB (n = 1762^b)	M9 (n = 2766^b)	(n = 5142^b)	(n = 1651^b)	(n = 12184^b)	(n = 1332^b)
CDC^c	0.433	0.367	0.654	0.460	0.374	0.228

Scaled N_c'^c	0.315	0.187	0.664	0.302	0.328	0.130

Scaled N_c^c	0.257	0.125	0.600	0.321	0.192	0.063

CAI^c	0.443	0.288	0.675	0.386	-0.118	0.034

^aExpression data were obtained from ¹Bernstein et al., ²Holstege et al., ³Zhang et al., ⁴Roy et al., and ⁵Wuest et al. (see details in Additional file 1).

^bNumber of genes (n).

^cP < 0.0001 for all values.