351
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Toyama S, Misono H, Soda K. Properties of taurine: alpha-ketoglutarate aminotransferase of Achromobacter superficialis. Inactivation and reactivation of enzyme. BIOCHIMICA ET BIOPHYSICA ACTA 1978; 523:75-81. [PMID: 629994 DOI: 10.1016/0005-2744(78)90010-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The activity of taurine: alpha-ketoglutarate aminotransferase (taurine: 2-oxoglutarate aminotransferase, EC 2.6.1.55) from Achromobacter superficialis is significantly diminished by treatment of the enzyme with (NH4)2SO4 in the course of purification, and recovered by incubation with pyridoxal phosphate at high temperatures such as 60 degrees C. The inactive form of enzyme absorbing at 280 and 345 nm contains 3 mol of pyridoxal phosphate per mol. The activated enzyme contains additional 1 mol of pyridoxal phosphate with a maximum at 430 nm. This peak is shifted to about 400 nm as a shoulder by dialysis of the enzyme, but the activity is not influenced. The inactive form is regarded as a partially resolved form, i.e. a semiapoenzyme. The enzyme catalyzes transamination of various omega-amino aicds with alpha-ketoglutarate, which is the exclusive amino acceptor. Hypotaurine, DL-beta-aminoisobutyrate, beta-alanine and taurine are the preferred amino donors. The apparent Michaelis constants are as follows; taurine 12 mM, hypotaurine 16 mM, DL-beta-aminoisobutyrate 11 mM, beta-alanine 17 mM, alpha ketoglutarate 11 mM and pyridoxal phosphate 5 micron.
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352
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Kido T, Soda K. Properties of 2-nitropropane dioxygenase of Hansenula mrakii. Formation and participation of superoxide. J Biol Chem 1978; 253:226-32. [PMID: 201619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
2-Nitropropane dioxygenase, purified to homogeneity from a yeast, Hansenula mrakii, is significantly inhibited by superoxide dismutase and various scavengers for superoxide anion such as cytochrome c, epinephrine, NADH, thiols, and polyhydric phenols. The reduction of cytochrome c and the oxidation of epinephrine and NADH are concomitant with the inhibition of enzymatic oxygenation. Neither the oxidation nor the reduction occursin the presence of superoxide dismutase or in the absence of 2-nitropropane or oxygen. Superoxide anion added externally induces the oxygenation. These findings indicate the generation of superoxide anion and its participation in the oxygenation of 2-nitropropane. The difference spectrum of the binding of NADH to 2-nitropropane dioxygenase exhibits a negative peak at 353 nm. One mole of NADH is bound to 1 mol of the enzyme and the pro-R hydrogen of the nicotinamide moiety of bound NADH predominantly is transferred to superoxide anion formed enzymatically or given externally. Thus, the diastereotopic hydrogen of NADH is discriminated by the enzyme, although not completely.
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353
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Kido T, Soda K. Properties of 2-nitropropane dioxygenase of Hansenula mrakii. Formation and participation of superoxide. J Biol Chem 1978. [DOI: 10.1016/s0021-9258(17)38292-3] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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354
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Kido T, Hashizume K, Soda K. Purification and properties of nitroalkane oxidase from Fusarium oxysporum. J Bacteriol 1978; 133:53-8. [PMID: 22538 PMCID: PMC221975 DOI: 10.1128/jb.133.1.53-58.1978] [Citation(s) in RCA: 57] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
A nitroalkane-oxidizing enzyme, which was inducibly formed by addition of nitroethane to the medium was purified to homogeneity from an extract of Fusarium oxysporum (IFO 5942) with an overall yield of about 20%. The enzyme catalyzed the oxidative denitrification of 1-nitropropane as follows: CH2(NO2)CH2CH3 + O2 + H2O leads to OHCCH2CH3 + HNO2 + H2O2. In addition to 1-nitropropane, 3-nitro-2-pentanol, 2-nitropropane, and nitrocyclohexane are good substrates; the enzyme is designated "nitroalkane oxidase" (EC class 1.7.3). The enzyme has a molecular weight of approximately 185,000 and consists of four subunits identical in molecular weight (47,000). Flavin adenine dinucleotide was required for the enzyme activity and could be replaced in part by riboflavin 5'-phosphate. The maximum reactivity was found at about pH 8.0. The enzyme was inhibited significantly by HgCl2, KCN, p-chloromercuribenzoate, and N-ethylmaleimide. The Michaelis constants are as follows: 1-nitropropane, 1.54 mM; 2-nitropropane, 7.40 mM; nitroethane, 1.00 mM; 3-nitro-2-pentanol, 3.08 mM; nitrocyclohexane, 0.90 mM; and flavin adenine dinucleotide, 1.33 micrometer.
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355
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Esaki N, Suzuki T, Tanaka H, Soda K, Rando RR. Deamination and gamma-addition reactions of vinylglycine by L-methionine gamma-lyase. FEBS Lett 1977; 84:309-12. [PMID: 598510 DOI: 10.1016/0014-5793(77)80713-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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356
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Misono H, Soda K. L-Lysine-alpha-ketoglutarate epsilon-aminotransferease. Properties of the bound pyridoxal 5'-phosphate. J Biochem 1977; 82:535-43. [PMID: 914795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
L-Lysine-alpha-ketoglutarate epsilon-aminotransferase of Flavobacterium lutescens (Achromobacter liquidum) IFO 3084 shows positive circular dichroic bands at 340 and 415 nm where absorption maxima are observed, and fluorescence maxima at 380 and 490 nm on excitation at 340 and 415 nm, respectively. The pyridoxal 5'-phosphate absorbing at 415 nm is bound through an aldimine linkage to an epsilon-amino group of the lysine residue of the protein. Upon aging, the 415 nm pyridoxal 5'-phosphate changes to a less active form (lambda max, 325 nm), which is distinguishable from the 340 nm pyridoxal 5'-phosphate. This 325 nm bound pyridoxal 5'-phosphate is reduced with sodium borohydride and shows no circular dichroism. When the semiapoenzyme is aged under the same conditions, no spectral change is observed. These findings suggest that the pyridoxal 5'-phosphate bound through an aldimine linkage may be converted into a carbinol amine or some other related form by aging.
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357
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Abstract
The distribution of bacterial L-methionine gamma-lyase (L-methionine methanethiollyase (deaminating) (EC 4.4.1.11) was investigated, and Pseudomonas ovalis (IFO 3738) was found to have the highest activity of enzyme, which was inducibly formed by addition of L-methionine to the medium. L-Methionine gamma-lyase, purified to homogeneity from Ps. ovalis, has a molecular weight of about 173 000 and consists of nonidentical subunits (mol wt: 40 000 and 48 000). The enzyme exhibits absorption maxima at 278 and 420 nm, and a shoulder around 330 nm, which are independent of the pH (6.0 to 10.0), and contains 4 mol of pyridoxal 5'-phosphate per mol of the enzyme. The formyl group of pyridoxal 5'-phosphate is bound in an aldimine linkage to the epsilon-amino group of lysine residues of the protein. The holoenzyme is resolved to the apoenzyme by incubation with hydroxylamine, and reconstituted by addition of pyridoxal 5'-phosphate. The enzyme activity is significantly affected by both carbonyl and sulfhydryl reagents. L-Methionine gamma-lyase catalyzes alpha,gamma- and alpha,beta-elimination reactions of, in addition to L-methionine, several derivatives of L-methionine and L-cysteine, e.g., L-ethionine, DL-methionine sulfone, L-homocysteine, and S-methyl-L-cysteine. The enzyme catalyzes also gamma-replacement reactions of the thiomethyl group of methionine with various alkanethiols (C2-C7), arylthio alcohols (benzenethiol and beta-naphthalenethiol) and the derivatives of ethanethiol (2-mercaptoethanol and cysteamine) to yield the corresponding S-substituted homocysteine. The thiomethyl group of S-methyl-L-cysteine also is replaced by ethanethiol to form S-ethyl-L-cysteine.
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358
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Kido T, Soda K, Suzuki T, Asada K. A new oxygenase, 2-nitropropane dioxygenase of Hansenula mrakii. Enzymologic and spectrophotometric properties. J Biol Chem 1976; 251:6994-7000. [PMID: 11214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
2-Nitropropane dioxygenase, purified to homogeneity from Hansenula mrakii (IFO 0895), has a molecular weight of approximately 62,000 and consists of two subunits nonidentical in molecular weight (39,000 and 25,000). Stoichiometrical studies and the results obtained with 18O2 showed that 2 atoms of molecular oxygen are incorporated into 2 molecules of acetone formed from 2-nitropropane. In addition to 2-nitropropane, nitroethane, 3-nitro-2-pentanol, and 1-nitropropane are oxidatively dentrified. The enzyme, which exhibits absorption maxima at 274, 370, 415, and 440 nm and a shoulder at 470 nm, contains 1 mol of FAD and 1 g atom of non-heme iron per mol of enzyme. The enzyme-bound FAD is reduced by 2-nitropropane under anaerogic conditions, but the enzyme-bound Fe3+ is not affected. The introduction of oxygen to the reduced form of enzyme causes reoxidation of the enzyme. The bound FAD and Fe3+ are reduced by the addition of nitromethane, which is not a substrate, under anaerobic conditions. The aerobic dialysis of the enzyme treated with nitromethane causes reoxidation of only the Fe2+. Sodium dithionite also reduces both the enzyme-bound FAD and Fe3+ under anaerobic conditions. When the enzyme is dialyzed against 10 mM potassium phosphate buffer (pH 7.0) immediately after reduction by dithionite, the absorption spectrum similar to that of the native enzyme appeared with concomitant restoration of approximately 80% of the activity. The enzyme activity is significantly inhibited by pyrocatechol-3,5-disulfonate disodium salt, 8-hydroxyquinoline, reducing agents such as 2-mercaptoethanol, and HgCl2. The Michaelis constants are as follows: 2-nitropropane (2.13 X 10(-2) M), nitroethane (2.43 X 10(-2) M), 3-nitro-2-pentanol (6.8 X 10(-3) M), 1-nitropropane (2.56 X 10(-2) M), and oxygen (3.03 X 10(-4) M, with 2-nitropropane).
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359
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Yonaha K, Toyama S, Yasuda M, Soda K. Purification and crystallization of bacterial omega-amino acid-pyruvate aminotransferase. FEBS Lett 1976; 71:21-4. [PMID: 992085 DOI: 10.1016/0014-5793(76)80889-7] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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360
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361
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Kido T, Soda K, Suzuki T, Asada K. A new oxygenase, 2-nitropropane dioxygenase of Hansenula mrakii. Enzymologic and spectrophotometric properties. J Biol Chem 1976. [DOI: 10.1016/s0021-9258(17)32932-0] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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362
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Misono H, Togawa H, Yamamoto T, Soda K. Occurrence of meso-alpha, epsilon-diaminopimelate dehydrogenase in Bacillus sphaericus. Biochem Biophys Res Commun 1976; 72:89-93. [PMID: 10904 DOI: 10.1016/0006-291x(76)90964-5] [Citation(s) in RCA: 33] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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363
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Tanaka H, Esaki N, Yamamoto T, Soda K. Purification and properties of methioninase from Pseudomonas ovalis. FEBS Lett 1976; 66:307-11. [PMID: 955094 DOI: 10.1016/0014-5793(76)80528-5] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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364
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Kido T, Yamamoto T, Soda K. Purification and properties of nitroalkane-oxidizing enzyme from Hansenula mrakii. J Bacteriol 1976; 126:1261-5. [PMID: 947888 PMCID: PMC233151 DOI: 10.1128/jb.126.3.1261-1265.1976] [Citation(s) in RCA: 31] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
A nitroalkane-oxidizing enzyme was purified about 1,300-fold from a cell extract of Hansenula mrakii grown in a medium containing nitroethane as the sole nitrogen source by ammonium sulfate fractionation, diethylaminoethyl-cellulose column chromatography, hydroxyapatite column chromatography, and Bio-Gel P-150 column chromatography. The enzyme was shown to be homogeneous upon acrylamide gel electrophoresis and ultracentrifugation. The enzyme exhibits absorption maxima at 274, 370, 415, and 440 nm and a shoulder at 470 nm. Balance studies showed that 2 mol of 2-nitropropane is converted into an equimolar amount of acetone and nitrite with the consumption of 1 mol of oxygen. Hydrogen peroxide is not formed in the enzyme reaction. In addition to 2-nitropropane, 1-nitropropane and nitroethane are oxidatively dentrified by the enzyme, but nitromethane is inert to the enzyme. The nitroalkanes are not oxidized under anaerobic conditions.
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365
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366
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367
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Kido T, Yamamoto T, Soda K. Microbial assimilation of alkyl nitro compounds and formation of nitrite. Arch Microbiol 1975; 106:165-9. [PMID: 1217935 DOI: 10.1007/bf00446519] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
66 representative strains of bacteria, yeasts and fungi were tested for their ability to grow in a semidefined medium containing 0.5% nitroethane as a nitrogen source. About half of them were found capable of growing in the medium. Hansenula beijerinckii, Candida utilis, and Penicillium chrysogenum were most active in assimilating nitroethane. 2-Nitropropane inhibited growth of most of the microorganisms tested in a medium containing 0.2% peptone and 0.2% glycerol. Hansenula mrakii was found to grow rapidly in the nitroethane-peptone medium after a lag phase. Nitrite was accumulated in the culture fluid after the phase of logarithmic multiplication, and increased with increase of the growth, followed by a decline after the maximum growth. The alkyl nitro compounds were oxidatively denitrified to form nitrite by the crude enzyme from Hansenula mrakii. Nitroethane was generally a poor substrate, but was the best inducer to produce the nitro compounds oxidizing enzyme. 2-Nitro-propane and nitroethane were enzymatically oxidized to nitrite, and acetone and acetaldehyde, respectively, which were isolated as 2,4-dinitrophenylhydrazones and identified. Nitrite formed was found to be reduced into ammonia by the intact cells and also the crude enzyme.
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368
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Yonaha K, Misono H, Yamamoto T, Soda K. D-amino acid aminotransferase of Bacillus sphaericus. Enzymologic and spectrometric properties. J Biol Chem 1975; 250:6983-9. [PMID: 1158891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
D-Amino acid aminotransferase, purified to homogeneity and crystallized from Bacillus sphaericus, has a molecular weight of about 60,000 and consists of two subunits identical in molecular weight (30,000). The enzyme exhibits absorption maxima at 280, 330, and 415 nm, which are independent of the pH (5.5 to 10.0), and contains 2 mol of pyridoxal 5'-phosphate per mol of enzyme. One of the pyridoxal-5'-P, absorbing at 415 nm, is bound in an aldimine linkage to the epsilon-amino group of a lysine residue of the protein, and is released by incubation with phenylhydrazine to yield the catalytically inactive form. The inactive form, which is reactivated by addition of pyridoxal 5'phosphate, still has a 330 nm peak and contains 1 mol of pyridoxal 5'-phosphate. Therefore, this form is regarded as a semiapoenzyme. The holoenzyme shows negative circular dichroic bands at 330 and 415 nm. D-Amino acid aminotransferase catalyzes alpha transamination of various D-amino acids and alpha-keto acids. D-Alanine, D-alpha-aminobutyrate and D-glutamate, and alpha-ketoglutarate, pyruvate, and alpha-ketobutyrate are the preferred amino donors and acceptors, respectively. The enzyme activity is significantly affected by both the carbonyl and sulfhydryl reagents. The Michaelis constants are as follows: D-alanine (1.3 and 4.2 mM with alpha-ketobutyrate and alpha-ketoglutarate, respictively), alpha-ketobutyrate (14 mM withD-alanine), alpha-ketoglutarate (3.4 mM with D-alanine), pyridoxal 5'-phosphate (2.3 muM) and pyridoxamine 5'-phosphate (25 muM).
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369
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370
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Soda K, Yonaha K, Misono H. Purification and crystallization of D-amino acid aminotransferase of Bacillus sphaericus. FEBS Lett 1974; 46:359-63. [PMID: 4420466 DOI: 10.1016/0014-5793(74)80407-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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371
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Tanaka H, Toyama S, Tsukahara H, Soda K. Transamination of hypotaurine by taurine:alpha-ketoglutarate aminotransferase. FEBS Lett 1974; 45:111-3. [PMID: 4607305 DOI: 10.1016/0014-5793(74)80823-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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372
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Tanaka H, Soda K. Enzymatic N-acetylation of lysine analogs. Purification and properties of acetyl coenzyme A:S-(beta-aminoethyl)-L-cysteine omega-N-acetyltransferase. J Biol Chem 1974; 249:5285-9. [PMID: 4851875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
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373
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Sawada S, Tanaka A, Hirasawa T, Soda K. Biostereochemistry of histidine metabolism. II. The steric course of ammonia elimation from L-histidine. BIOCHIMICA ET BIOPHYSICA ACTA 1974; 350:354-7. [PMID: 4847567 DOI: 10.1016/0005-2744(74)90509-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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374
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Moriguchi M, Yamamoto T, Soda K. Properties of crystalline kynureninase from Pseudomonas marginalis. Biochemistry 1973; 12:2969-74. [PMID: 4730493 DOI: 10.1021/bi00740a004] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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375
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Moriguchi M, Soda K. Transamination reaction catalyzed by kynureninase and control of the enzyme activity. Biochemistry 1973; 12:2974-80. [PMID: 4730494 DOI: 10.1021/bi00740a005] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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376
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Oki T, Shirai M, Oshima M, Yamamoto T, Soda K. Antitumor activities of bacterial leucine dehydrogenase and glutaminase A. FEBS Lett 1973; 33:286-8. [PMID: 4199599 DOI: 10.1016/0014-5793(73)80212-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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377
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Soda K, Oshima M, Yamamoto T. Purification and properties of isozymes of glutaminase from Pseudomonas aeruginosa. Biochem Biophys Res Commun 1972; 46:1278-84. [PMID: 4622222 DOI: 10.1016/s0006-291x(72)80113-x] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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378
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Toyama S, Misono H, Soda K. Crystalline taurine: -ketoglutarate aminotransferase from Achromobacter superficialis. Biochem Biophys Res Commun 1972; 46:1374-9. [PMID: 5012173 DOI: 10.1016/s0006-291x(72)80127-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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379
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Abstract
High activity of taurine:alpha-ketoglutarate aminotransferase was found exclusively in cell-free extracts of Achromobacter superficialis and A. polymorph. The former was chosen for characterization of the enzymatic reaction. The enzyme activity was enhanced by addition of beta-alanine to the growth medium. The product from alpha-ketoglutarate was identified as l-glutamate. Another product has been isolated, purified, and identified as sulfoacetaldehyde (2-oxoethanesulfonate), a deamination product from taurine, by comparison between the 2,4-dinitrophenylhydrazones of the synthetic and enzymatic products on the basis of studies by paper chromatography, by visible, infrared, and nuclear magnetic resonance spectrophotometries, and by elemental analysis. This enzymatic transamination was found to proceed stoichiometrically and reversibly as follows: NH(2).CH(2).CH(2).SO(3)H + HOOC.CH(2).CH(2).CO.COOH right harpoon over left harpoon OHC.CH(2).SO(3)H + HOOC.CH(2).CH(2).CH(NH(2)).COOH.
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380
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Soda K. Plaque characteristics of coxsackie A7 virus. JAPANESE JOURNAL OF MEDICAL SCIENCE & BIOLOGY 1971; 24:295-311. [PMID: 5003822 DOI: 10.7883/yoken1952.24.295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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381
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382
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Soda K, Matumoto M. Enhancement of rubella virus replication in swine testicle cells by co-infection with hog cholera virus. JAPANESE JOURNAL OF MICROBIOLOGY 1971; 15:397-406. [PMID: 5003257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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383
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Yorifuji T, Misono H, Soda K. Arginine racemase of Pseudomonas graveolens. II. Racemization and transamination of ornithine catalyzed by arginine racemase. J Biol Chem 1971; 246:5093-101. [PMID: 5570440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
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384
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385
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Moriguchi M, Yamamoto T, Soda K. Crystalline kynureninase from Pseudomonas marginalis. Biochem Biophys Res Commun 1971; 44:752-7. [PMID: 5123212 DOI: 10.1016/s0006-291x(71)80147-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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386
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Soda K, Matumoto M, Tabata E. Erythrocytes of Japanese quail for hemagglutination by rubella virus. JAPANESE JOURNAL OF MICROBIOLOGY 1971; 15:351-7. [PMID: 5315707 DOI: 10.1111/j.1348-0421.1971.tb00591.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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387
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Soda K, Tanaka H, Yamamoto T. Enzymic N-acetylation of a sulfur analog of L-lysine, S-(beta-aminoethyl)-L-cysteine. FEBS Lett 1970; 8:301-303. [PMID: 11947599 DOI: 10.1016/0014-5793(70)80292-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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388
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Soda K, Yorifuji T, Misono H, Moriguchi M. Spectrophotometric determination of pyridoxal and pyridoxal 5'-phosphate with 3-methyl-2-benzothiazolone hydrazone hydrochloride, and their selective assay. Biochem J 1969; 114:629-33. [PMID: 5820647 PMCID: PMC1184936 DOI: 10.1042/bj1140629] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
A spectrophotometric method with 3-methyl-2-benzothiazolone hydrazone hydrochloride was developed for the determination of pyridoxal and pyridoxal 5'-phosphate, and for the selective determination of each in the presence of the other. Pyridoxal and pyridoxal 5'-phosphate react with the reagent to yield the azine derivatives, which give characteristic absorption spectra. The highest extinction values are obtained when pyridoxal and pyridoxal 5'-phosphate are incubated at pH values of about 3.4 and 8.0 respectively; their maxima are at 430nm. (in 2.74x10(4)) and 380nm. (in 2.24x10(4)) respectively. The azine of pyridoxal is only slightly soluble under the neutral and alkaline conditions, whereas that of pyridoxal 5'-phosphate is substantially insoluble in the acid pH range. This difference in solubility of the azines made possible the selective determination of pyridoxal and pyridoxal 5'-phosphate. alpha-Oxoglutarate and pyruvate are among the substances shown not to interfere with the assay of pyridoxal; their derivatives absorb appreciably only at wavelengths below 420nm. For the assay of pyridoxal 5'-phosphate in the presence of these compounds measurement at 390nm. is necessary.
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389
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Soda K, Kitahara T, Nakao C, Hara M, Tagaya I. Serodifferentiation of poliovirus strains. II. Modified Wecker test on type 3 poliovirus strains. JAPANESE JOURNAL OF MEDICAL SCIENCE & BIOLOGY 1969; 22:201-16. [PMID: 4311582 DOI: 10.7883/yoken1952.22.201] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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390
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391
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Soda K, Misono H, Yamamoto T. Transamination of S-(beta-aminoethyl)-L-cysteine by L-lysine: alpha-ketoglutarate aminotransferase. BIOCHIMICA ET BIOPHYSICA ACTA 1969; 177:364-7. [PMID: 5780098 DOI: 10.1016/0304-4165(69)90152-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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392
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393
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Soda K, Tanaka H, Yamamoto T. Bacterial N-acetylation of an L-lysine antagonist, S-(beta-aminoethyl)-L-cysteine. Arch Biochem Biophys 1969; 130:610-6. [PMID: 5778674 DOI: 10.1016/0003-9861(69)90077-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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394
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395
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Soda K, Misono H, Yamamoto T. L-Lysine:alpha-ketoglutarate aminotransferase. I. Identification of a product, delta-1-piperideine-6-carboxylic acid. Biochemistry 1968; 7:4102-9. [PMID: 5722275 DOI: 10.1021/bi00851a045] [Citation(s) in RCA: 78] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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396
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Soda K, Misono H. L-Lysine:alpha-ketoglutarate aminotransferase. II. Purification, crystallization, and properties. Biochemistry 1968; 7:4110-9. [PMID: 5722276 DOI: 10.1021/bi00851a046] [Citation(s) in RCA: 48] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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397
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Soda K. Microdetermination of D-amino acids and D-amino acid oxidase activity with 3,methyl-2-benzothiazolone hydrazone hydrochloride. Anal Biochem 1968; 25:228-35. [PMID: 4387536 DOI: 10.1016/0003-2697(68)90095-x] [Citation(s) in RCA: 85] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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398
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Soda K. [Observations on corneal and retinal epithelium in tissue culture. 2. Phase microscopy and microcinematographic observations on corneal polygonal cell of the cultured chick embryo and the effect of nycline (nicotinic acid) and Condron (chondroitin sulfate) on the cell]. IGAKU KENKYU. ACTA MEDICA 1967; 37:683-7. [PMID: 4871086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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399
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Soda K. [Observations on corneal and retinal epithelium in tissue culture. 1. Phase microscopy and microcinematographic observations on the epithelium in the cultured chick embryo]. IGAKU KENKYU. ACTA MEDICA 1967; 37:677-82. [PMID: 4871085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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400
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Soda K. [Observations on corneal and retinal epithelium in tissue culture. 3. Phase microcinematographic observations on the effect of Nycline and Condron on epithelial cells of the cornea and retina in cultured chick embryos]. IGAKU KENKYU. ACTA MEDICA 1967; 37:688-92. [PMID: 4871087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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