The crystal structure of aspartate aminotransferase of Escherichia coli was determined by X-ray structure analysis at 2.8 A resolution. The structure was solved by the molecular replacement method and refined to an R-factor of 0.27, and it was found that the overall structure of AspAT of E. coli is similar to that of those of higher animals.
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Kamitori et al. (1988) studied this question.