Newly scientists have contrived the new system to get known the structure of protein, that is x-ray analysis. Protein crystallography is known as just a part of x-ray crystallography but it is truly significant. The protein is such a compound substance which has triple structure, but it's found out only after the research of the secondary structure of protein. Sometimes, on the basis of protein crystallography data it is possible do determine the protein quaternary texture, but it is not always available. The capability of protein structure determination depends from a lot of various factors. Folding of protein is the main structural feature of protein molecule. As of today lots of scientists try to carry out the complex analysis of the protein function. They have already tested thoroughly that all the essential data of protein can be found in its primary texture or in protein sequence. Many quite important features of protein as protein classification, its role are still can not be determined due to shortage of knowledge about it, so we should learn more about protein classification. There are lots of protein problems which are not worked out regardless of the current progress. It is impossible to study how the texture of protein is related with its primary structure. For very little, that named peptides, this problem is resolved. Scientists achieve success in the sphere of description of peptides. Now it is feasible to carry out the peptide synthesis process for any size peptides.

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