There are lots methods to research the structure of protein, but the most proper is x-ray analysis. Protein crystallography is considered to be just a section of x-ray crystallography but it is really important. The protein is quite complex matter which has threefold structure, but it's found out only after the study 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 the case. In certain cases protein displays its different characteristics, it depends on conditions. Folding of protein is the cardinal structural characteristic of protein molecule. In compliance with all analysisses, all data about protein folding is collected in the protein primary structure, or in protein sequence, that is why it is essential to begin any proteins research from defining of sequence of protein. Read more
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