Results 91 to 100 of about 144 (131)

Urea, Ureides, and Guanidines in Plants

Annual Review of Plant Physiology, 1962
H Reinbothe, K Mothes
exaly   +2 more sources

Ureide biosynthesis in legume nodules

Frontiers in Bioscience, 2004
In tropical legumes like Glycine, Phaseolus and Vigna sp., ammonia as direct product of symbiotic nitrogen fixation is converted to ureides (allantoin and allantoic acid) and they were translocated to the shoots as nitrogen source. In the xylem sap of soybean in reproductive phase the ureides reached to 60-75% of soluble nitrogen.
Shigeyuki, Tajima, Mika, Nomura, Hiroshi, Kouchi   +2 more
openaire   +2 more sources

Ureide catabolism in nitrogen-fixing legumes

Trends in Biochemical Sciences, 1988
Abstract The ureides, allantoin and allantoate, are the major nitrogen transport compounds in certain N 2 -fixing legumes. A novel pathway of allantoate catabolism that releases 4NH 3 , 2CO 2 and glyoxylate from allantoate, independent of urease action, has been proposed for soybeans.
R G, Winkler, D G, Blevins, J C, Polacco, D D, Randall   +3 more
openaire   +2 more sources

Simple estimate of ureides in soybean tissue

Analytical Biochemistry, 1982
Abstract Extracts of soybean tissue are treated with an acidic cation-exchange resin to remove amino acids. The sample is treated with hypochlorite, pH 4.0, to convert the amide from allantoic acid or allantoin to products that react with alkaline phenol to form indophenol. The procedure is inexpensive, sensitive, and rapid. The method may be adapted
T G, Patterson, R, Glenister, T A, LaRue
openaire   +2 more sources

The Infrared Spectra of Ureides of Glucose and Lactose

Journal of the American Chemical Society, 1960
Leon Segal
exaly   +2 more sources

Ureide metabolism in higher plants

Phytochemistry, 1981
Abstract The synthesis, transport and assimilation of the ureides, allantoin and allantoic acid, in higher plants is reviewed. Evidence indicates that in nodulated legumes ureides are synthesized from products of N2-fixation via purine synthesis and degradation.
Richard J. Thomas, Larry E. Schrader
openaire   +1 more source

Ureide biogenesis in leguminous plants

Trends in Biochemical Sciences, 1982
Abstract Allantion and allantoic acid are the predominant forms of organic nitrogen produced by N-fixing nodules of some important legume species. Only recently has the significance and biosynthetic origin of these substances in leguminous plants been realized.
Paul H.S. Reynolds, Michael J. Boland, Dale G. Blevins, Douglas D. Randall, Karel R. Schubert   +4 more
openaire   +1 more source

THE METABOLISM OF UREA AND UREIDES

Canadian Journal of Botany, 1961
Urea has long been of interest to both plant and animal physiologists. As early as 1889 De Vries demonstrated by plasmolytic methods that urea permeates plant cells. Since then it has played a large part in the development of theories of permeability, and more recently a non-osmotic uptake of urea has been postulated.
openaire   +1 more source

Urea and Ureides

1955
The necessity for the inclusion of a section on this group of compounds was unfortunately realised late by the editors. As a consequence it proved impossible to secure a contribution from a recognised authority in the field. Since however it seems to the editors that it is a subject that has been unjustly neglected — particularly in Britain and the ...
openaire   +1 more source

Ureide catabolism in Arabidopsis thaliana and Escherichia coli

Nature Chemical Biology, 2009
The availability of whole genome sequences boosts the identification of biochemical pathways conserved across species using tools of comparative genomics. A cross-organism protein association analysis allowed us to identify two enzymes, ureidoglycine aminohydrolase and ureidoglycolate amidohydrolase, that catalyze the final reactions of purine ...
Andrea K, Werner, Tina, Romeis, Claus-Peter, Witte   +2 more
openaire   +2 more sources