def _HELP_convert_RMSD_nm2angstrom(RMSD_nm):
    """
    Helpfunction for plot_HEATMAP_REX_RMSD():
    convert RMSD values: RMSD_nm -> RMSD_anstrom

    Args:
        RMSD_nm (list): rmsd values in nm

    Returns:
        RMSD (list)
            rmsd values in angstrom
    """
    RMSD = [x*10 for x in RMSD_nm]
    return RMSD