Table 4

Comparison of Ich and Tetrahymena membrane transporters according to TC class, superfamily and substrate type

Number of transporters in Ich (percentage of total transporters)

Number of transporters in Tetrahymena (percentage of total transporters)


TC class

1. Channels

155 (32)

418 (38)

2. Secondary carriers

191 (40)

386 (36)

3. Primary active transporters

131 (27)

269 (25)

9. Poorly characterized transporters

6 (1)

13 (1)

Total

483

1086

TC superfamily

VIC

116 (24)

396 (36)

APC

7 (1)

64 (6)

MFS

75 (16)

146 (13)

MC

38 (8)

43 (4)

CPA

16 (3)

20 (2)

ABC

40 (8)

159 (15)

P-ATPase

65 (13)

91 (8)

Substrate type

Inorganic molecules

249 (51)

500 (53)

Carbon sources

54 (11)

77 (8)

Drugs, toxins, macromolecules

77 (16)

155 (17)

Vitamins, co-factors

15 (3)

23 (2)

Nucleotide bases and derivatives

21 (4)

26 (3)

Amino acids and derivatives

34 (7)

49 (5)

Unknown

38 (8)

110 (12)


MFS, major facilitator superfamily; VIC, voltage-gated ion channel; MC, mitochondrial carrier; CPA, cation:proton antiporter.

Coyne et al. Genome Biology 2011 12:R100   doi:10.1186/gb-2011-12-10-r100

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