Dimers of nicotinamide adenine dinucleotide: New evidence for the structure and the involvement in an enzymatic redox process
The composition and the structure of the product from the known electrochemical dimerization of the NAD + have been conclusively demonstrated. A detailed analysis of the 1H and 13C nmr spectra has in fact led to the conclusion that the product contains three diastereoisomeric dimers of the 4,4′-tetr...
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Published in | Bioorganic chemistry Vol. 9; no. 3; pp. 342 - 351 |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
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Elsevier Inc
1980
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Abstract | The composition and the structure of the product from the known electrochemical dimerization of the NAD
+ have been conclusively demonstrated. A detailed analysis of the
1H and
13C nmr spectra has in fact led to the conclusion that the product contains three diastereoisomeric dimers of the 4,4′-tetrahydrobipyridyl type. Furthermore, the cytoplasmic fraction obtained from a standard mitochondrial preparation of rat liver has been shown to catalyze the oxygen uptake by the dimers. A 1 : 1 molar ratio of the reagents in the redox process is indicated by manometric data on oxygen uptake complemented by spectrophotometric analysis of the oxidized substrates, suggesting that H
2O
2 is the reduction product. NAD
+ was identified as the oxidation product by an enzymatic method. |
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AbstractList | The composition and the structure of the product from the known electrochemical dimerization of the NAD
+ have been conclusively demonstrated. A detailed analysis of the
1H and
13C nmr spectra has in fact led to the conclusion that the product contains three diastereoisomeric dimers of the 4,4′-tetrahydrobipyridyl type. Furthermore, the cytoplasmic fraction obtained from a standard mitochondrial preparation of rat liver has been shown to catalyze the oxygen uptake by the dimers. A 1 : 1 molar ratio of the reagents in the redox process is indicated by manometric data on oxygen uptake complemented by spectrophotometric analysis of the oxidized substrates, suggesting that H
2O
2 is the reduction product. NAD
+ was identified as the oxidation product by an enzymatic method. |
Author | Casini, Antonio Mondelli, Rosanna Liberatore, Felice Rotilio, Giuseppe Carelli, Italo Arnone, Alberto Carelli, Vincenzo Mavelli, Irene |
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Cites_doi | 10.1021/bi00886a021 10.1016/S0021-9258(19)43244-4 10.1021/ja00851a010 10.1021/bi00805a013 10.1016/0003-9861(73)90525-0 10.1021/bi00850a003 10.1016/S0040-4039(01)85366-1 10.1021/bi00777a023 10.1002/mrc.1270091007 10.1039/p29720001643 10.1021/jo00887a007 10.1111/j.1432-1033.1977.tb11630.x 10.1016/S0021-9258(18)96961-9 10.1021/ja00484a047 10.1021/jo00411a046 10.1002/mrc.1270010404 10.1038/2211239a0 |
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