Table 2.

Percentage of Metagenome Sequences Similar to Major Metabolism

COG categorya	Red matb	Green matb	Pc
Information storage and processing
Translation, ribosomal structure, and biogenesis	3.89±3.02	10.05±1.94	2e-300
DNA replication, recombination, and repair	8.99±3.02	10±2.88	2e-14
Transcription	4.77±1.67	2.82±2.14	1e-92
	17.65	22.87
Metabolism
Amino acid transport and metabolism	10.66±2.85	8.78±3.1	1e-41
Energy production and conversion	8.26±2.62	7.33±2.77	1e-14
Carbohydrate transport and metabolism	5.41±2.31	5.6±2.28	0.968
Coenzyme metabolism	3.88±2.14	4.74±1.94	2e-20
Nucleotide transport and metabolism	2.43±1.81	3.33±1.55	4e-31
Lipid metabolism	4.52±1.79	3.28±2.09	2e-42
Secondary metabolites biosynthesis	1.84±1.07	1.14±1.35	2e-35
	37	34.21
Cellular processes
Cell envelope biogenesis	5.26±2.8	8.48±2.25	2e-130
Post-translational modification	3.56±2.27	5.36±1.86	1e-71
Inorganic ion transport and metabolism	7.99±2.03	4.26±2.73	7e-174
Signal transduction mechanisms	5.85±2.02	4.23±2.36	2e-54
Defense	2.4±1.59	2.56±1.54	0.989
Cell division and segregation	0.73±1.28	1.65±0.86	2e-68
Cell motility	2.11±1.25	1.56±1.44	2e-19
Secretion	0.97±1.15	1.33±0.98	5e-14
	28.86	29.41
Poorly characterized
general function	9.48±2.81	8.51±2.95	6e-14
unknown	6.94±2.17	4.89±2.56	3e-71
	16.42	13.41

^aSzynkiewicz et al., 2009.

^bThe given error is the standard error from a FDR analysis.

^cThe P-values were calculated with a two-tailed t test.