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Open AccessResearch article

The distribution and evolutionary history of the PRP8 intein

Margaret I Butler email, Jeremy Gray email, Timothy JD Goodwin email and Russell TM Poulter email

Department of Biochemistry, University of Otago, P.O. Box 56, Dunedin, New Zealand

author email corresponding author email

BMC Evolutionary Biology 2006, 6:42doi:10.1186/1471-2148-6-42

Published: 31 May 2006

Additional files

Additional File 1:

SNAP XY plots of the homing endonuclease encoding regions of the PRP8 and VMA inteins. These represent the cumulative behaviour of the average synonymous and non-synonymous substitutions across the coding region. The analysis was done at the SNAP site [40]. The positions of codons are indicated below the x-axis. The y-axis indicates the cumulative number of nucleotide changes causing synonymous (red) or non-synonymous (green) amino acid changes.

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