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Table 4 Chordata huntingtin gene structure, coding region (CDS), and length percentage of repetitive elements (Rpt) in intronic sequences.

From: Huntingtin gene evolution in Chordata and its peculiar features in the ascidian Ciona genus

  

Exon N°

Length (bp)

Intron L %

   

CDS

Gene

Introns

Rpt

Simple

Interspers

Retroel

DNA el

Mammalia

Homo sapiens

67

9432

165202

155770

38.5

1.3

37.2

33.9

2.2

 

Mus musculus

67

9357

146932

137575

38.2

1.9

36.2

34.7

0.5

 

Rattus norvegicus

67

9351

145591 p

136240 p

35.4

2.6

32.9

31.3

0.9

Aves

Gallus gallus

67

9351

73424 p

64073 p

5.5

0.6

4.9

4.9

0

Amphibia

Xenopus tropicalis

67

9066 p

79087 p

70021 p

11.0

0.9

10.0

0

9.3

Teleostei

Danio rerio

67

9363

79017 p

69654 p

29.9

5.3

24.6

4.3

20.3

 

Fugu rubripes

67

9444

21324

11880

1.1

1.1

0

0

0

 

Tetraodon nigridoviridis

67

9435

22257

12822

2.4

1.8

0.5

0

0.5

Ascidiacea

Ciona savignyi

61

8835

45085

36249

9.8

2.7

7.1

4.4

2.1

 

Ciona intestinalis

61

8838

32283

23445

12.5

5.8

6.7

1.6

5.1

  1. Simple: satellites, simple repeats, low complexity repeats and small RNAs. Interspers: interspersed repeats. Retroel: retroelements. DNA el: DNA elements. p: partial sequence. Partial introns in Rattus: 1, 8, 28. Partial introns in Gallus: 46, 47. Partial or unknown exons in Xenopus: 27, 37, 66. Partial or unknown introns in Xenopus: 9, 26, 27, 36, 37, 65, 66. Partial introns in Danio: 1, 6, 8, 11, 13, 18, 25, 44, 49, 59. Intron 61 of Danio was excluded from gene size calculation due to its length (about 254 kb).
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BMC Genomics

ISSN: 1471-2164

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