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Article type: Cover
2001 Volume 75 Issue 2 Pages
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Published: February 25, 2001
Released on J-STAGE: December 26, 2017
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Haruo Misono
Article type: Article
2001 Volume 75 Issue 2 Pages
51-61
Published: February 25, 2001
Released on J-STAGE: December 26, 2017
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This review summarizes functions, regulations, and structures of NAD(P)^+ and vitamin B_6 (B_6) enzymes which were found by us. NADP^+-dependent meso-diaminopimelate dehydrogenase, a kind of D-amino acid dehydrogenase, functions in lysine biosynthesis of Bacillus sphaericus. Properties of the enzymes purified from B. sphaericus, Corynebacterium glutamicum, Brevibacterium sp. were compared. The amino acid residues of the active site in the B. sphaericus enzyme were identified by the site-directed mutagenesis. NAD^+-dependent lysine dehydrogenase of Agrobacterium tumefaciens functions in degradation of L-lysine. Stereochemistry of the enzyme reaction, allosteric properties of the enzyme, a lysine residue in the effector-binding site, and a cysteine residue essential for its activation were characterized. The properties and primary structures of NADP^+-dependent dehydrogenases acting on the hydroxylgroup of amino acids, D-threonine dehydrogenase, D-phenylserine dehydrogenase, and serine dehydrogenase, were studied. Moreover, D-threonine dehydrogenase homologues, YhaE and YbbQ of Escherichia coli and serine dehydrogenase homologues of E. coli (YdfG) and Saccharomyces cerevisiae (Ymr226cp) were characterized. Inducible two kinds of B_6 enzymes, phenylserine dehydratase and phenylserine aldolase, and a homologue of the aldolase, GLY1 protein of S. cerevisiae, were characterized. The aldolase gene was present in an operon with a regulatory protein gene. Function of the reguratory protein was also described.
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[in Japanese]
Article type: Article
2001 Volume 75 Issue 2 Pages
63-71
Published: February 25, 2001
Released on J-STAGE: December 26, 2017
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[in Japanese]
Article type: Article
2001 Volume 75 Issue 2 Pages
73-80
Published: February 25, 2001
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[in Japanese], [in Japanese]
Article type: Article
2001 Volume 75 Issue 2 Pages
81-86
Published: February 25, 2001
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[in Japanese]
Article type: Article
2001 Volume 75 Issue 2 Pages
87-94
Published: February 25, 2001
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[in Japanese], [in Japanese]
Article type: Article
2001 Volume 75 Issue 2 Pages
95-97
Published: February 25, 2001
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[in Japanese]
Article type: Article
2001 Volume 75 Issue 2 Pages
97-100
Published: February 25, 2001
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
2001 Volume 75 Issue 2 Pages
101-
Published: February 25, 2001
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
2001 Volume 75 Issue 2 Pages
101-102
Published: February 25, 2001
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
2001 Volume 75 Issue 2 Pages
102-
Published: February 25, 2001
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
Article type: Article
2001 Volume 75 Issue 2 Pages
102-
Published: February 25, 2001
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
2001 Volume 75 Issue 2 Pages
102-103
Published: February 25, 2001
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
2001 Volume 75 Issue 2 Pages
103-
Published: February 25, 2001
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
2001 Volume 75 Issue 2 Pages
104-
Published: February 25, 2001
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
2001 Volume 75 Issue 2 Pages
104-
Published: February 25, 2001
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
2001 Volume 75 Issue 2 Pages
104-
Published: February 25, 2001
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