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NITROGEN METABOLISM IN THE‘ROOT’OF BRASSICA NAPUS L.
Author(s) -
BOSWELL J. G.
Publication year - 1961
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.1961.tb06234.x
Subject(s) - enzyme , biochemistry , metabolism , ascorbic acid , brassica , nitrogen cycle , chemistry , protein metabolism , protein biosynthesis , nitrogen , citric acid cycle , metabolic pathway , biology , botany , organic chemistry , food science
S ummary The recorded observations are interpreted on the basis that part at least of the protein in the tissue is maintained by a metabolic system in which synthesis and breakdown of protein occur simultaneously, and that these two processes are not two phases of a reversible system but are composed of two separate groups of reactions. The data obtained indicate that protein breakdown is controlled by an iron‐containing enzyme system which may well involve cytochrome and that this is associated with the Krebs cycle of organic‐acid metabolism. The synthesis of protein appears to be controlled by a copper‐containing enzyme system which in the swede ‘root’ may well involve ascorbic acid. C 4 and C 6 organic acids are utilized in the process of protein synthesis.