FIGURE 1.
Diagram of COG categories with differentially expressed genes in Polaromonas sp. Eur3 1.2.1 at 0°C and Rhodococcus sp. JG3 at –5°C. The number of differentially expressed genes in each category is expressed as a percent of total. Letters correspond to COG categories: C, energy production and conversion; D, cell cycle control, cell division, and chromosome partitioning; E, amino acid metabolism and transport; F, nucleotide metabolism and transport; G, carbohydrate metabolism and transport; H, coenzyme metabolism and transport; I, lipid metabolism and transport; J, translation, ribosome structure, and biogenesis; K, transcription; L, replication, recombination, and repair; M, cell wall/membrane/envelope biogenesis; N, cell motility and secretion; O, post-translational modification, protein turnover, and chaperone functions; P, inorganic ion transport and metabolism; Q, secondary metabolites biosynthesis, transport, and catabolism; T, signal transduction; V, defense mechanisms; and R, general functional prediction only.