def _reset_seq(self):
        """Updates attributes for gene represented in the self.bed attribute.

        Sequences are always upper case.
        """
        exon_seq_list, five_ss_seq_list, three_ss_seq_list = self._fetch_seq()
        self.exon_seq = ''.join(exon_seq_list)
        self.three_prime_seq = three_ss_seq_list
        self.five_prime_seq =  five_ss_seq_list
        self._to_upper()
Updates attributes for gene represented in the self.bed attribute.

        Sequences are always upper case.