The Path of Carbon in Photosynthesis VIII. The Role of MalicAcid Page: 4 of 14
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UCRL-584
ABSTRACTTHE PATH OF CARBON IN PHOTOSYNTHESIS
VIII. THE ROLE OF MALIC ACID *
James A. Bassham, Andrew A. Benson and Melvin Calvin
Radiation Laboratory and Department of Chemistry
University of California, Berkeley
ABSTRACT
Malonate has been fotnd to inhibit the f;rDation of malic acid
during short periods of photosynthesis with radioactive carbon dioxide.
This result, together with studies which show the photosynthetic cycle
to be operating normally at the same time, indicates that malic acid is
not an intermediate in photosynthesis but is probably closely related to
some intermediate of the cycle0
Absence of labeled succinic and famaric acids in these experr-
ments, in addition to the failure of malonate to inhibit photosynthesis9
precludes the participation of these acids as intermediates in photosynthesis.(*) The work described in this paper was sponsored by the U.S. Atomic
Energy Commission0To be published in the Journal of Biological Chemistry,
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Bassham, James A.; Benson, Andrew A. & Calvin, Melvin. The Path of Carbon in Photosynthesis VIII. The Role of MalicAcid, report, January 25, 1950; Berkeley, California. (https://digital.library.unt.edu/ark:/67531/metadc890654/m1/4/?rotate=90: accessed May 6, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.