The Path of Carbon in Photosynthesis. XVIII The Identification ofNucleotide Coenzymes

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The radioactive compounds to be observed when algae or green leaves are allowed to photosynthesize in C{sup 14}O{sub 2} for short periods are almost all phosphorylated derivatives of sugars. Of these, phosphate esters of trioses, sedoheptulose and fructose are the first to incorporate C{sup 14} followed closely by ribulose diphosphate, glucose-6-phosphate and a phosphate of mannose. It has been noted, in earlier papers of this series, that on radiograms of the products of photosynthesis, a dark area appeared in a position occupied by no known sugar phosphate and which gave glucose on acid hydrolysis or on treatment with a phosphatase ... continued below

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Buchanan, J.G.; Lynch, V.H.; Benson, A.A.; Calvin, M. & Bradley,D.F. January 19, 1953.

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The radioactive compounds to be observed when algae or green leaves are allowed to photosynthesize in C{sup 14}O{sub 2} for short periods are almost all phosphorylated derivatives of sugars. Of these, phosphate esters of trioses, sedoheptulose and fructose are the first to incorporate C{sup 14} followed closely by ribulose diphosphate, glucose-6-phosphate and a phosphate of mannose. It has been noted, in earlier papers of this series, that on radiograms of the products of photosynthesis, a dark area appeared in a position occupied by no known sugar phosphate and which gave glucose on acid hydrolysis or on treatment with a phosphatase preparation. This has hitherto been referred to as an 'unknown glucose phosphate'. It was found that this substance was more labile to acid than glucose-l-phosphate, itself a readily hydrolysable phosphate, and furthermore that other labile glucose derivatives were formed as intermediates during the acid hydrolysis. Accumulation of labeled glucose in this area precedes that in sucrose and suggests its synthetic relationship to sucrose phosphate synthesis.

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  • Report No.: UCRL--2074
  • Grant Number: DE-AC02-05CH11231
  • DOI: 10.2172/915412 | External Link
  • Office of Scientific & Technical Information Report Number: 915412
  • Archival Resource Key: ark:/67531/metadc879339

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  • January 19, 1953

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  • Sept. 22, 2016, 2:13 a.m.

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  • Nov. 3, 2016, 8:19 p.m.

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Buchanan, J.G.; Lynch, V.H.; Benson, A.A.; Calvin, M. & Bradley,D.F. The Path of Carbon in Photosynthesis. XVIII The Identification ofNucleotide Coenzymes, report, January 19, 1953; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc879339/: accessed December 12, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.