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Pyrithiamine deaminase
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Pyrithiamine deaminase : ウィキペディア英語版
Pyrithiamine deaminase

In enzymology, a pyrithiamine deaminase () is an enzyme that catalyzes the chemical reaction
:1-(4-amino-2-methylpyrimid-5-ylmethyl)-3-(beta-hydroxyethyl)-2- methylpyridinium bromide + H2O \rightleftharpoons 1-(4-hydroxy-2-methylpyrimid-5-ylmethyl)-3-(beta-hydroxyethyl)-2- methylpyridinium bromide + NH3
The 3 substrates of this enzyme are 1-(4-amino-2-methylpyrimid-5-ylmethyl)-3-(beta-hydroxyethyl)-2-, methylpyridinium bromide, and H2O, whereas its 3 products are 1-(4-hydroxy-2-methylpyrimid-5-ylmethyl)-3-(beta-hydroxyethyl)-2-, methylpyridinium bromide, and NH3.
This enzyme belongs to the family of hydrolases, those acting on carbon-nitrogen bonds other than peptide bonds, specifically in cyclic amidines. The systematic name of this enzyme class is 1-(4-amino-2-methylpyrimid-5-ylmethyl)-3-(beta-hydroxyethyl)-2-methy lpyridinium-bromide aminohydrolase.
==References==

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抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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