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Báo cáo khoa học: Local changes in the catalytic site of mammalian histidine decarboxylase can affect its global conformation and stability

Chia sẻ: Nguyen Thang | Ngày: | Loại File: PDF | Số trang:12

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Mature, active mammalian histidine decarboxylase is a di-meric enzyme of carboxy-truncatedmonomers (53 kDa). By using a biocomputational approach, we have generateda three-dimensional model of a recombinant 1/512 fragment of the rat enzyme, which shows kinetic constants similar to those of the mature enzyme purified from rodent tissues. This model, together with previous spectroscopic data, al-lowed us to postulate that the occupation of the catalytic center by the natural substrate, or by substrate-analogs, would induce remarkable changes in the conformation of the intact holoenzyme....

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Nội dung Text: Báo cáo khoa học: Local changes in the catalytic site of mammalian histidine decarboxylase can affect its global conformation and stability

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