The presence of highly regular secondary structure motifs in protein structure is a fascinating area of study. The secondary structures play important roles in protein structure and protein folding. We investigate the folding properties of protein by introducing the effect of secondary structure elements. We observed the emergence of several structures with both large average energy gap and hig...

MOTIVATION Until ab initio structure prediction methods are perfected, the estimation of structure for protein molecules will depend on combining multiple sources of experimental and theoretical data. Secondary structure predictions are a particularly useful source of structural information, but are currently only approximately 70% correct, on average. Structure computation algorithms which inc...

To study protein clustering is very important in diverse fields such as drug design and environmental industry. For a meaningful clustering, protein structure must be considered. But, protein structures are very complicated and have so much information such as angles, 3-dimensional coordinates. Thus, it is not easy to efficiently compute their relations. In this paper, we present a method to ef...

Four levels in protein structural organization are commonly identified. Primary structure is a sequence of amino acids. Secondary structure is represented by regular local conformations of polypeptide chain, such as α-helix or β-strand. The combinations of two secondary structure elements are also sometimes referred to as secondary (or supersecondary) structure. The example is a β-hairpin forme...

introduction: the sexual maturity is a major factor of fertility and reproduction activity. since no information was availabe about microscopic developement of seminiferous tubules structure including spermatogenic cells, sertoli, pgc (primordial germ cell) and laydig cells, the present detailed study on buffalo testis was undertaken. materials and methods: the present study was made on 30 buff...

     In this study, the effect of the secondary structure of the protein on the acid strength of three structures of random (R), alpha helix (α) and beta sheet (b) were investigated theoretically. These structures are related to the cationic amino acids of histidine and lysine in the polypeptide chain of eight-glycine residue. Computational methods at the HF, B3LYP, X3LYP and M05-2X levels in t...

Thermal characteristics of egg white proteins (EWP) may differ in the presence of saccharides. Therefore, the influence of saccharides including carboxymethyl cellulose (CMC), pectin, sucrose and maltodextrin and heating time on physicochemical characteristics of EWP as a whole were studied. Investigation of Heat Coagulation Time (HCT), solubility, turbidity and protein secondary structure of h...