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Table 1 The distribution of SMR homologues into each of the three SMR protein family subclasses within Archaea and Bacteria.

From: Diversity and evolution of the small multidrug resistance protein family

  SMR subclass members (%)    
  SMP SUG PSMRc      Qacd    
Archaeal and Bacterial Classes    A B C D E   Total number SMR/Bacteria Total number species with SMR Mean SMR/species
Euryarchaeota 30 40      30   10 10 1
Halobacteria 60 40        5 5 1
Methanomicrobia   40      60   5 5 1
Bacteria 28 32 11 7 8 3 6 4 675 330 2
Actinobacteria 6 43   48     4 54 28 2
Bacilli   13   12 32 25 14 5 81 22 4
Lactobacilli   59   18 24     17 11 2
Bacteroidetes   100        4 4 1
Chlorobia 7 53      40   15 9 2
Flavobacteria 20 80        5 4 1
Clostridia   36   9 18   36   11 7 2
Cyanophyceae 43 14   19    24   21 15 1
Deinococci   63 25 13      6 3 2
Chlamydiales   100        2 2 1
Planctomycetacia   50   50      3 3 1
Chloroflexi 43    14    43   8 7 1
α-proteobacteria 48 45 4     2 1 100 63 2
β-proteobacteria 42 42 7     6 3 71 36 2
γ-proteobacteria 41 25 21   2   2 9 213 95 2
δ-proteobacteria 21 52 21     7   29 13 2
ε-proteobacteria   6 40   54     35 11 3
Total number of sequenced organisms surveyed with SMR           340  
Total number of sequenced organisms surveyed           988  
Percentage of sequenced organisms with SMR (%)           34  
  1. The number of SMR sequences for each kingdom and class are indicated by percentage.
  2. a The number of SMR sequences for each kingdom and class are indicated as a percentage of the total number identified.
  3. b yvaE genes are only paired with yvaD genes among Bacilli and Lactobacilli.
  4. c PSMR pairs are indicated as follows corresponding to the indicated letter: ydgE and ydgF(A), ebrA and ebrB (B), ykkC and ykkD (C), yvdR and yvdS (D), and yvaE and yvaD (E)
  5. d Qac refers to integron and plasmid derived seqeunces only.