Newly scientists have contrived the alternative system to learn the structure of protein, that is x-ray analysis. In general, x-ray crystallography includes protein crystallography as a little, but very significant part. The protein is such a complex substance that has threefold structure, but it's become known just after the study of the secondary structure of protein. Usually, on the basis of protein crystallography data it is possible do define the protein quaternary texture, but it is not always available. The ability of protein structure defining depends from many different factors. Folding of protein is the cardinal structural characteristic of protein molecule. According to all analysisses, all data about protein folding is stocked in the protein basic structure, or in protein sequence, that is why it is essential to commence any protein research from defining of sequence of protein. On the basis of protein sequence, it is possible to carry out analysis of protein and define a lot of various protein characteristics, such as classification of protein, protein function and a lot of etc. and just learn more about function of protein. Despite our progress in these studies, the main protein problem is not resolved yet. There is some determined relations between the texture of protein and its basic texture, but they haven't been described. For very little, that called peptides, this problem is worked out. Scientists achieve success in the sphere of peptide. Owing to the new technologies we have a chance to fulfill the peptide synthesis action.

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