Homopolymer model

In tire simple version of tire lattice representation of proteins tire polypeptide chain is modelled as a sequence of connected beads. The beads are confined to tire sites of a suitable lattice. Most of tire studies have used tire cubic lattice. To satisfy tire excluded volume condition only one bead is allowed to occupy a lattice site. If all tire beads are identical we have a homopolymer model the characteristics of which on lattices have been extensively studied. 

Copolymer Systems. The copolymer model development followed the homopolymer model development, properly accounting though for the presence of two monomers, two types of radicals and other implications that a comonomer system can give rise to. Information from (72) was found very helpful. Details on the copolymer model development can be found in (59). 

Free-Energy Barrier for Melting and Crystallization of a Single-Homopolymer Model... 

Unfolded state (3 is characterized by a wide uni-modal and symmetrical distribution of the end-to-end distance. The distribution narrows down in a uniform manner with increasing Tw Thus, in the case of unfolded state / , one does not observe a correlation between R and the time scale of conformational dynamics. This behavior is similar to that previously observed in the case of a free-jointed homopolymer model. [54]... 

Y. Zhou, C. K. Hall and M. Karplus. First-order disorder-to-order transition in an isolated homopolymer model. Physical Review Letters, 77 (1996), 2822. 

Helfand E (1975) Theory of inhomogeneous polymers fundamentals of the Gaussian random-walk model. J Chem Phys 62 999-1005 Hildebrand JH (1936) The solubility of non-electrolytes. Reinhold, New York Hoy KL (1985) Tables of solubility parameters. Union Carbide Corporation, Solvent and Coatings Materials Research and Development Department, South Charleston Hu WB (1998) Structural transformation in the collapse transition of the single flexible homopolymer model. J Chem Phys 109 3686-3690... 

An example of the application of histogram reweighting for determining the phase behavior of a homopolymer model on the simple cubic lattice is... 

Hu W (1998) Structural transformation in the collapse transition of the single flexible homopolymer model. J Chem Phys 109(9) 3686-3690 Hu W (20(X)) The melting point of chain polymers. J Chem Phys 113(9) 3901-3908 Hu W (2005) Molecular segregation in polymer melt crystallization simulation evidence and unified-scheme interpretation. Macromolecules 38(21) 8712-8718 Hu W (2007) Intramolecular crystal nucleation. In Reiter G, Strobl GR (eds) Lecture notes in physics progress in understanding of polymer crystallization. Springer, Berlin, pp 47-63 Hu W (2013) Polymer physics a molecular approach. Springer, Wien... 

Hu W. Structural transformation in the collapse transition of the single flexible homopolymer model. J Chem Phys 1998 109 3686-3690. 

Proteins form the most prominent class of polymers, where different types of secondary structures occur, typically within the same molecule. It is therefore useful to extend the homopolymer model employed in the previous section by introducing two types of monomers which can be hydrophobic or polar. For this purpose, we will now combine the already introduced and for the line-like heteropolymers in Chapter 8 extensively studied AB model with the thickness constraint. 

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