Table 4.

Distribution of Tmm homologs at different sampling sites in the Global Ocean Sampling expedition metagenomic data set

Sample no.	Sampling site	Description	Tmm*	GmaS*	DddP*	DddD*	DddL*	DmdA*	RecA*	% genomes with Tmm†	% genomes with GmaS†
2	Gulf of Maine	Coastal	12	16	1	2	0	21	35	29	39
3	Brown's Bank-Gulf of Maine	Coastal	13	11	0	0	0	39	52	24	21
4	Outside Halifax Nova Scotia	Coastal	30	21	0	0	0	34	40	55	38
5	Bedford Basin Nova Scotia	Embayment	7	7	2	3	0	26	34	18	18
6	Bay of Fundy Nova Scotia	Estuary	23	25	0	0	0	50	80	39	42
7	Northern Gulf of Maine	Coastal	8	14	2	0	0	20	53	13	23
8	Newport Harbor	Coastal	2	7	4	0	0	9	43	3	12
9	Block Island	Coastal	15	15	0	0	0	28	33	39	39
10	Cape May	Coastal	18	19	0	0	0	36	63	27	29
11	Delaware Bay	Estuary	5	2	0	0	0	7	43	10	3
12	Chesapeake Bay	Estuary	5	4	0	0	0	17	39	10	8
13	Off Nag's Head	Coastal	7	9	1	0	0	17	43	18	24
14	South of Charleston	Coastal	18	14	0	0	0	42	67	29	22
15	Off KeyWest	Coastal	5	15	2	0	0	35	51	8	26
16	Gulf of Mexico	Coastal	14	7	1	0	0	41	50	26	13
17	Yucatan Channel	Open ocean	9	13	1	0	0	32	61	15	23
18	Rosario Bank	Open ocean	9	13	3	0	0	43	83	14	20
19	Northeast of Colon	Coastal	6	16	2	0	0	33	72	10	27
20	Lake Gatun	Fresh water	0	1	0	0	0	3	61	0	1
21	Gulf of Panama	Coastal	5	14	4	0	0	31	53	10	27
22	250 miles from Panama City	Open ocean	12	16	1	0	0	35	50	22	28
23	30 miles from Cocos	Open ocean	11	16	0	0	0	35	54	18	26
25	Dirty Rock Cocos Island	Fringing reef	0	1	1	0	0	5	13	0	6
26	134 miles NE of Galapagos	Open ocean	7	11	1	0	0	41	55	13	20
27	Devil's Crown	Coastal	16	13	4	0	0	41	66	26	20
28	Coastal Floreana	Coastal	10	12	2	0	0	48	70	16	20
29	North James Bay	Coastal	9	24	2	0	0	46	50	20	52
30	Warm Seep Roca Redunda	Warm seep	19	17	1	0	0	52	55	36	33
31	Upwelling Fernandina Island	Coastal	26	27	1	0	0	57	61	46	49
32	Mangrove on Isabella	Mangrove	8	5	1	1	0	16	43	20	14
33	Punta Cormorant	Hypersaline	0	2	4	0	6	2	43	0	4
34	North Seamore Island	Coastal	9	17	2	0	0	42	51	17	32
35	Wolf Island	Coastal	11	13	2	0	0	38	51	21	26
36	Cabo Marshall	Coastal	14	19	0	0	0	45	54	24	33
37	Equatorial TAO	Open ocean	14	6	5	0	0	48	38	30	13
47	201 miles from French Polynesia	Open ocean	9	18	5	0	0	48	62	15	29
51	Rangiora Atoll	Coral reef	12	14	2	0	0	28	53	25	29
		Average	11	13	1.5	0.2	0.2	32	52	20	23

*The sampling sites are as detailed in Howard et al. (37). Numbers of Tmm and GmaS homologs, per 100,000 reads, with BLASTP values of <e⁻⁸⁰. Values of DddD, DddL, DmdA, and RecA were from Howard et al. (37), and values of DddP were from Todd et al. (38).

^†Frequencies of Tmm- and GmaS-containing strains, expressed as genome equivalents, as described in Howard et al. (37).