Abundance and functional diversity of riboswitches in microbial communities

BMC Genomics

Table 1 The distribution of identified riboswitches classes over three metagenomes and the total number of riboswitches in each class

Riboswitch class	Sargasso Sea		Minnesota Soil		Whale Falls		Total
S-box	3^a)	2.5^b)	5^a)	28^b)	4^a)	33^b)	12^a)	21^c)
RFN	2	1.6	2	11	3	25	7	12.5
LYS	1	0.8	-	-	-	-	1	0.26
B₁₂	32	27	14	78	15	125	61	77
THI-box	60	50	14	78	17	142	91	90
G-box	-	-	1	0.8	-	-	1	0.26
GLMS	-	-	1	6	1	8	2	5
GCVT	106	89	4	22	9	75	119	62
YKKC/YXKD	-	-	1	6	4	33	5	13
YKOK	-	-	1	6	-	-	1	2
YYBP/YKOY	2	1.7	6	33	3	25	11	20
Total	206	1.7	49	2.7	56	4.7	311	3

^a) Number of identified riboswitches.
^b) The ratio of the number of identified riboswitches to the number of genes in a metagenome by the factor of ×10^-6 (except for the 'Total' row, where the factor is ×10^-4).
^c) The average fraction of riboswitch-regulated genes in three metagenomes by the factor of ×10^-6 (except for the 'Total' row, where the factor is ×10^-4).

ISSN: 1471-2164