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Table 1 The median/average 5'UTR lengths and the numbers of cell types of the compared organisms

From: The plausible reason why the length of 5' untranslated region is unrelated to organismal complexity

Species

Median/Average length of 5'UTRs (bp)

No. of cell typesc

 

Ensembla

(C) UTRdbb

 
 

(A)

(B)

  

Human (Homo sapiens)

169/254

160/218

160/220

169

Chimpanzee (Pan troglodytes)

130/243

100/150

80/128

169

Mouse (Mus musculus)

126/213

120/176

131/189

159

Rat (Rattus novegicus)

99/168

88/130

110/180

159

Chicken (Gallus gallus)

75/112

77/108

80/126

154

Cow (Bos taurus)

92/139

89/124

95/135

159

Dog (Canis familiaris)

63/96

62/89

59/97

159

Frog (Xenopus tropicalis)

77/110

77/108

95/136

130

Zebrafish (Danio rerio)

104/141

106/136

109/142

120

Tetraodon (Tetraodon nigroviridis)

74/91

69/90

--d

120

Fugu (Takifugu rubripes)

62/96

69/102

(59/107) e

120

Ascidian (Ciona intestinalis)

70/105

66/86

65/101

74

Fruit fly (Drosophila melanogaster)

127/223

125/214

131/225

64

Nematode (Caenorhabditis elegans)

28/68

27/54

31/70

28.5

Honeybee (Apis mellifera)

--

--

78/171

64

Mosquito (Anopheles gambiae)

--

--

125/173

64

Thale cress (Arabidopsis thaliana)

--

--

101/140

27.25

Rice (Oryze sative)

--

--

118/221

27.25

Yeast (Saccharomyces cerevisiae) f

62/97

61/93

62/97

3.05

  1. a Two criteria were used to select a transcript for each gene with multiple isoforms: (A) a randomly selected transcript; and (B) the transcript with a pure 5'UTR.
  2. b For the UTRdb dataset, randomly selected transcripts were used in the case of alternative splicing.
  3. c The numbers of cell types were retrieved from referenced [16].
  4. d not available.
  5. e Fugu was not included in the UTRdb dataset because we could not find adequate orthologous genes in Fugu to construct the phylogenetic tree for independent contrast analysis.
  6. f The data for yeast were retrieved from Nagalakshmi et al's study [37].