Table 1. COG distribution of carbonylated proteins identified following biotin labeling.

COG categories		UVB		DARK
		Nb of prot.	% of prot	Nb of prot.	% of prot
[COG J]	Translation, ribosomal structure and biogenesis	47	33	22	39
[COG K]	Transcription	5	3	2	4
[COG L]	Replication, recombination and repair	5	3	2	4
[COG D]	Cell cycle control, cell division, chromosome partitioning	1	1	0	0
[COG T]	Signal transduction mechanisms	4	3	3	5
[COG M]	Cell wall/membrane/envelope biogenesis	7	5	3	5
[COG N]	Cell motility	2	1	1	2
[COG U]	Intracellular trafficking, secretion, and vesicular transport	4	3	0	0
[COG O]	Posttranslational modification, protein turnover, chaperones	14	10	5	9
[COG C]	Energy production and conversion	7	5	0	0
[COG G]	Carbohydrate transport and metabolism	7	5	3	5
[COG E]	Amino acid transport and metabolism	7	5	6	11
[COG F]	Nucleotide transport and metabolism	1	1	0	0
[COG H]	Coenzyme transport and metabolism	3	2	0	0
[COG I]	Lipid transport and metabolism	6	4	1	2
[COG P]	Inorganic ion transport and metabolism	5	3	1	2
[COG Q]	Secondary metabolites biosynthesis, transport and catabolism	3	2	1	2
[COG R]	General function prediction only	6	4	3	5
[COG S]	Function unknown	9	6	4	7

Numbers indicate the number of proteins in each COG category.