def get_cell_parameters(line):
    """Identify cell parameters from line.

    Read the cell parameters from an appropriate line

    Parameters
    ----------
    line: str
        Line from pdb file.

    Returns
    -------
    array_like float
        the a, b, c cell vectors of the particular timestep
    """
    return [float(line[6:15]), float(line[15:24]), float(line[24:33])]
