NAME

       Bio::SeqFeature::Gene::ExonI - Interface for a feature representing an exon

SYNOPSIS

       See documentation of methods.

DESCRIPTION

       A feature representing an exon. An exon in this definition is transcribed and at least for
       one particular transcript not spliced out of the pre-mRNA. However, it does not
       necessarily code for amino acid.

FEEDBACK

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AUTHOR - Hilmar Lapp

       Email hlapp@gmx.net

APPENDIX

       The rest of the documentation details each of the object methods.  Internal methods are
       usually preceded with a _

   is_coding
        Title   : is_coding
        Usage   : if($exon->is_coding()) {
                          # do something
                  }
        Function: Whether or not the exon codes for amino acid.
        Returns : TRUE if the object represents a feature translated into protein,
                  and FALSE otherwise.
        Args    :

   cds
        Title   : cds()
        Usage   : $cds = $exon->cds();
        Function: Get the coding sequence of the exon as a sequence object.

                  The returned sequence object must be in frame 0, i.e., the first
                  base starts a codon.

                  An implementation may return undef, indicating that a coding
                  sequence does not exist, e.g. for a UTR (untranslated region).

        Returns : A L<Bio::PrimarySeqI> implementing object.
        Args    :