id: 01209985 dt: j an: 01209985 au: Ejtehadi, M.R.; Hamedani, N.; Seyed-Allaei, H.; Shahrezaei, V.; Yahyanejad, M. ti: Highly designable protein structures and inter-monomer interactions. so: J. Phys. A, Math. Gen. 31, No.29, 6141-6155 (1998). py: 1998 pu: IOP Publishing Ltd., Bristol, UK la: EN cc: ut: computer enumeration; lattice hydrophobic-polar model; protein folding ci: li: doi:10.1088/0305-4470/31/29/006 ab: Summary: By exact computer enumeration and combinatorial methods, we have calculated the designability of proteins in a simple lattice hydrophobic-polar model for the protein folding problem. We show that if the strength of the non-additive part of the interaction potential becomes larger than a critical value, the degree of designability of structures will depend on the parameters of the potential. We also show that the existence of a unique ground state is highly sensitive to mutation in certain sites. rv: