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Table 1 Detected ERV structural traits in the human and chicken genomes

From: Use of Endogenous Retroviral Sequences (ERVs) and structural markers for retroviral phylogenetic inference and taxonomy

Genome(s)1

Genus

Class

ERVs2

Gag-Pro f.s.3

Pro-Pol f.s.3

dUTPase4

C-term. motifs5

  

(ERV)

 

-1

0

1

-1

0

1

(dUTPase Pro )

G-patch

GPY/F

gg01

alpha

 

34

4

1

1

10

2

1

0

0

0

gg01

alpha-beta

 

67

5

2

0

5

3

1

21

0

0

gg01 and hg16

beta

II

582

49

18

14

50

22

27

363

68

0

gg01 and hg16

gamma

I

2069

14

55

13

32

64

43

0

0

264

gg01 and hg16

delta

 

(-)6

(-)

(-)

(-)

(-)

(-)

(-)

(-)

(-)

(-)

gg01 and hg16

epsilon

 

n.d.7

n.d.

n.d.

n.d.

n.d.

n.d.

n.d.

n.d.

n.d.

n.d.

gg01 and hg16

lenti

 

(-)

(-)

(-)

(-)

(-)

(-)

(-)

(-)

(-)

(-)

gg01 and hg16

spuma-like

III

193

n.d.

n.d.

n.d.

n.d.

n.d.

n.d.

n.d.

n.d.

n.d.

  1. 1 Human genome version 16 (hg16) and Chicken genome (gg01). Alpha and alpha-beta retroviruses were only detected in the chicken genome
  2. 2 Detected ERVs from the databank collection, with RetroTector© score >300 and recognized Pol puteins.
  3. 3 Predicted frameshift (f.s.) translation strategy between the respective putein ORFs in elements with score >1000, and no f.s. in the near 3'-end.
  4. 4 Detected dUTPase N-terminal of protease domain (dUTPasePro) in elements with score >300.
  5. 5 Detected C-terminal Pro (G-patch) and Pol (GPY/F) motifs elements with score >300.
  6. 6 (-): no delta or lentiviral ERVs were detected in the genomes.
  7. 7 (n.d.): not determined. The scarcity of epsilon like elements [19] and the highly mutated nature of both epsilon and spuma-like elements, in the human genome did not provide sufficient information to conduct a thorough analysis.