Multiple sequence alignment of the second
conserved domain in rt by using pileup (32).
copia/Ty1 consensus positions are highlighted. Amino
acids identical to consensus are highlighted in black; amino acids
similar to consensus are highlighted in gray. Opie-2 (18); Art1 (C.
Herve, unpublished data, GenBank accession no. Y08010); 1731 (43);
Copia (44); Tnt1 (45); Tto1 (46); Hopscotch (17); Tgmr
(47); Tst1 (48); Ty1 (49); Ty3 (50); Del (51); Gypsy (21); FIV (52);
HIV1 (53). A, Ala; C, Cys; D, Asp; E, Glu; F, Phe; G, Gly; H, His; I,
Ile; K, Lys; L, Leu; M, Met; N, Asn; P, Pro; Q, Gln; R, Arg; S, Ser; T,
Thr; V, Val; W, Trp; Y, Tyr.