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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].