class bioInfo():

    # contains basic information on amino acids etc

    def __init__(self):
        pass

    def getAminoAcids(self):

        # return ordered list of amino acids
        lst = ['ALA', 'ARG', 'ASN', 'ASP',
               'CYS', 'GLN', 'GLU', 'GLY',
               'HIS', 'ILE', 'LEU', 'LYS',
               'MET', 'PHE', 'PRO', 'SER',
               'THR', 'TRP', 'TYR', 'VAL']

        return lst

    def getNucleotides(self):

        # return ordered list of nucleic acid identifiers

        lst = ['A', 'C', 'G', 'T', 'U']

        return lst

    def getDNA(self):

        # return ordered list of DNA bases

        lst = ['DA', 'DC', 'DG', 'DT']

        return lst

    def getRNA(self):

        # return ordered list of RNA bases

        lst = ['A', 'C', 'G', 'U']

        return lst
