1691 K
24 pp.
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TitleThe Path of Carbon in Photosynthesis XVIII. The Identification of Nucleotide Coenzymes
Author(s)Buchanan, J. G.; Lynch, V. H.; Benson, A. A.; Calvin, M.; Bradley, D. F.
Publication DateJanuary 19, 1953
Report NumberUCRL-2074
Unique IdentifierACC0321
Other NumbersOSTI ID: 4372149; OSTI ID: 915412
Research OrgUniversity of California Radiation Laboratory, Berkeley, CA; Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (US) [LBL][LBNL]
Contract NoW-7405-eng-48; DE-AC02-05CH11231
Sponsoring OrgU.S. Atomic Energy Commission (AEC)
Subject14 Solar Energy; Carbon Cycle; Coenzymes; Nucleotides; Photosynthesis; Chemical Reaction Kinetics
KeywordsBiology And Medicine; Acidity; Adenine; Adenosine; ADP; Ammonium Compounds; Amp Process; ATP; Chromatography; Compounds; Mannose-- Molybdenum Phosphates; Nucleic Acids; Nucleotides; Organic Phosphorus Compounds; Phosphates; Proteins; Ribonucleic Acid; Separation Processes; Sugars; Carbohydrates; Carbon; Carbon Dioxide; Carbon 14; Compounds; Enzymes; Galactose; Glucose; Heterocyclics; Hexose; Labelled Compounds; Metabolism; Nucleic Acids; Organic Nitrogen Compounds; Phosphates; Pigments; Plants; Polysaccharides; Proteins; Sugars; Uridine
Related Web PagesMelvin Calvin and Carbon in Photosynthesis
AbstractThe 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.
1691 K
24 pp.
View Document 

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