Six-frame translation of nucleotide sequences.
Reverse translation of amino acid into nucleotide sequences.
Extraction of GI-numbers from a given file (e.g. 'gi|555|').
Extraction of nucleotide sequences upstream of genes identified by the gi-numbers of their encoded proteins.
Extract a representative set of sequences from an alignment.
Sequence reformatting utility.
Sequence retrieval from user-defined database(s) using a list of gi-numbers.