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Table 2 Percentage nucleotide (amino acid) similarity of the different PePV ORFs with corresponding ORFs of HPV-1, HPV-5, HPV-16, and BPV-1.

From: Avian papillomaviruses: the parrot Psittacus erithacus papillomavirus (PePV) genome has a unique organization of the early protein region and is phylogenetically related to the chaffinch papillomavirus

PePV ORF

BPV-1

HPV-1

HPV-5

HPV-16

E1

38 (32)

38 (32)

39 (31)

41 (33)

E2

28 (26)

39 (34)

31 (25)

34 (27)

E4

NA1

NA1

NA1

NA1

L2

28 (27)

30 (30)

29 (28)

30 (27)

L1

44 (39)

46 (42)

44 (45)

47 (41)

  1. 1 NA: Not alignable because of insufficient similarity