Modeling of heat stress protein 70 (HSP70) of honey bee by homology modeling and molecular simulation method and interaction to HSP40

Heat stress is one of the most significant problems which has negative effect on feed intake, growth rate, neural network, immune function and mortality. In heat stress, the synthesis of proteins delayed but the heat stress proteins quickly are synthesized. They have important role in survival cell in stress conditions. Hsp70 is one of most important hsps, Because of crystallographic structure of this protein is not determined in honey bee, modeling of honey bee hsp70 can identify the mechanism of action of this protein against environmental stresses and help to reduce costs associated with environmental stresses. HSP40 is as a regulator of the mechanism of HSP70. So, in the present study, 3d structure of two proteins and interaction of HSP70 and HSP40 was studied using simulation methods in two states: 1- To investigate the interaction between the two proteins in blind (whole 3d structure of proteins were used),this results show interaction between these proteins mainly is restricted to two regions. HSP70 is bound to the HSP40 from the amino acid region of 400-430 and 620-640, with the amino acid region of 330-350 and 165-175, respectively. 2- According to previous studies, docking is only possible in likely regions of the proteins. So, the interaction between Jdomain of HSP40 to HSP70 was investigated, in which the amino acids 28-41 of Jdomain are interacting to an acid groove in the ATPase domain of HSP70. The results could help to better understand the function of two proteins and to design new anti stress drugs.