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Table 1 Intact, non-functional (pseudogenes) and partial OR genes in one reptile and two bird species

From: A comparison of reptilian and avian olfactory receptor gene repertoires: Species-specific expansion of group γ genes in birds

 

Intacta

Pseudogenesb

Partialc

  

Species

α

γ

γ-c

θ

Total

α

γ

γ-c

θ

Total

α

γ

γ-c

θ

Total

Totald

% intact

OR genes

(range)e

Green anole

1

108

0

1

110

0

42

0

0

42

0

4

0

0

4

156

72 (71;73)

Chicken

9

39

165

1

214

6

26

79

0

111

2

11

141

0

154

479

66 (45;77)

Zebra finch

2

3

128

1

134

3

4

214

0

221

0

3

195

0

198

553

38 (24;60)

  1. a A sequence is defined as "intact" if it possesses a full-length OR protein coding sequence that is at least 250 amino-acids long and has seven TM domains.
  2. b A sequence is defined as "pseudogene" if it possesses at least 1 premature stop codon and/or frameshift and/or has less than seven TM domains.
  3. c A sequence is classified as a partial gene if it is shorter than 250 amino-acids and contains at least one sequence gap on the flanking genomic region.
  4. d Numbers indicate the sum of intact genes, pseudogenes and partial genes.
  5. e The percentage of intact OR genes is calculated as the ratio of 100*intact genes/(intact genes + pseudogenes). Numbers in brackets indicate the proportion of intact OR genes assuming that all partial genes will turn out to be pseudogenes (first number) or intact OR genes (second number).