  The corner stone of the classical model after Huxley and Simmons is
supposition that a myosin head can reside only in several discrete states and
irregularly jumps from one state to another. Until now, it has not been found a
way to experimentally verify this supposition although confirmation or
refutation of the existence of discrete states is crucial for the solution of
myosin motor problem. Here I show that a set of equal myosin heads arranged
equidistantly along an actin filament produce X-ray pattern which varies with
the type of conformation. If the lever arms of all myosin heads reside in one
and the same position (continuous conformation), all the heads have the same
form-factor and equally scatter electromagnetic wave. In this case, only the
geometric factor associated with a spatial ordering of the heads will determine
the X-ray pattern. The situation changes if the average lever arm position is
the same, but inherently every head can reside only in several diverse discrete
states, hopping irregularly from one to another. In this case, the form-factors
corresponding to distinct states are dissimilar, and the increments in phases
of X-rays scattered by different heads are different as well. Inasmuch as every
quantum of radiation interacts with the heads residing in different states,
this results in additional interference and some peaks in the X-ray pattern
should slacken or even extinct as compared with the pattern from the heads with
the continuous-type conformation. The formulas describing both cases are
compared in this article. In general, the distinction between X-ray patterns is
insignificant, but they could be appreciably different at some stages of
conformation process (respective lever arm position depends on the type of
discrete model). Consequently, one can with luck attempt to find out this
difference using a high-sensitive equipment.
