def bes(args):
    """
    %prog bes bacfasta clonename

    Use the clone name to download BES gss sequences from Genbank, map and then
    visualize.
    """
    from jcvi.apps.align import run_blat

    p = OptionParser(bes.__doc__)
    p.set_cpus()
    opts, args = p.parse_args(args)

    if len(args) != 2:
        sys.exit(not p.print_help())

    bacfasta, clonename = args

    entrez([clonename, "--database=nucgss", "--skipcheck"])
    besfasta = clonename + ".fasta"
    blatfile = clonename + ".bes.blat"
    run_blat(infile=besfasta, outfile=blatfile, db=bacfasta, \
             pctid=95, hitlen=100, cpus=opts.cpus)

    aid, asize = next(Fasta(bacfasta).itersizes())

    width = 50
    msg = "=" * width
    msg += "  " + aid
    print(msg, file=sys.stderr)

    ratio = width * 1. / asize
    _ = lambda x: int(round(x * ratio, 0))
    blasts = [BlastLine(x) for x in open(blatfile)]
    for b in blasts:
        if b.orientation == '+':
            msg = " " * _(b.sstart) + "->"
        else:
            msg = " " * (_(b.sstop) - 2) + "<-"
        msg += " " * (width - len(msg) + 2)
        msg += b.query
        if b.orientation == '+':
            msg += " (hang={0})".format(b.sstart - 1)
        else:
            msg += " (hang={0})".format(asize - b.sstop)

        print(msg, file=sys.stderr)
%prog bes bacfasta clonename

    Use the clone name to download BES gss sequences from Genbank, map and then
    visualize.