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Does PAML (codeml ) analysis include the introns or it correspond only to the CDS ?

I have done a phylogeny tree using protein sequences. Now I want to measure dn/ds on several branches. If I want to work on the nucleotide level, can I do the analysis using the corresponding coding region only or do I need to include the introns as well?

paml introns

1 answer

codeml models codon (if input is DNA) or amino acid (if input is peptides) substitution, so yes, you should use only the coding part of your sequences.

Building on this, you can't just give it -any- coding sequence. It needs to be in the appropriate frame or the analysis is meaningless.

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