Moves the `Polynucleotide` to lie on the `start` and `end` vector.

        Parameters
        ----------
        start : 3D Vector (tuple or list or numpy.array)
            The coordinate of the start of the helix primitive.
        end : 3D Vector (tuple or list or numpy.array)
            The coordinate of the end of the helix primitive.

        Raises
        ------
        ValueError
            Raised if `start` and `end` are very close together.

def move_to(self, start, end):
        """Moves the `Polynucleotide` to lie on the `start` and `end` vector.

        Parameters
        ----------
        start : 3D Vector (tuple or list or numpy.array)
            The coordinate of the start of the helix primitive.
        end : 3D Vector (tuple or list or numpy.array)
            The coordinate of the end of the helix primitive.

        Raises
        ------
        ValueError
            Raised if `start` and `end` are very close together.
        """
        start = numpy.array(start)
        end = numpy.array(end)
        if numpy.allclose(start, end):
            raise ValueError('start and end must NOT be identical')
        translation, angle, axis, point = find_transformations(
            self.helix_start, self.helix_end, start, end)
        if not numpy.isclose(angle, 0.0):
            self.rotate(angle=angle, axis=axis, point=point, radians=False)
        self.translate(vector=translation)
        return