STATISTICS OF POLYMER-CHAIN CONFORMATIONS IN THE INTRINSIC COORDINATE SYSTEMA. E. Arinshtein UDC 541.1 The statistics of polymer-chain conformations in the intrinsic coordinate system, the directions of whose axes are determined by the anisotropy of a polymer coil at certain instantaneous distribution of the conformations, is considered. It is shown that even for an absolutely flexible polymer chain the shape of the coil in the intrinsic coordinate system is anisotropic. Full distribution functions of the chain links in space are constructed for both the absolutely flexible linear polymer and the linear polymer chain which possesses finite flexural rigidity, and degrees of anisotropy of these macromolecules are calculated. N. N. Semenov Institute of Chemical Physics, Russian Academy of Sciences, Moscow, Russia; email: firstname.lastname@example.org. Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 76, No. 3, pp. 31-38, May-June, 2003. Original article submitted November 12, 2002.