Fig. 3.

CLUSTALW alignment of Rr-ENG-1, Hg-ENG-6, and Mi-ENG-2 identifies shared intron splice positions. Intron splice positions are numbered 1-12 above the amino acid sequence. Amino acids highlighted in: black = phase 0 (splice site is after the 3^rd bp of the codon), red = phase 1 (splice site is between the 1^st and 2^nd bp of the codon), and green = phase 2 (splice site is between the 2^nd and 3^rd bp of the codon). Positions of shared identity among the three proteins are indicated by asterisks. The glycosyl hydrolase family 5 signature sequence is underlined.