Auxin concentrations in plants are tightly regulated through both biosynthesis and degradation. In the past few years, much progress was made in the area of auxin metabolism. Genetic and biochemical studies in Arabidopsis unequivocally established a complete tryptophan (Trp)-dependent two-step auxin biosynthesis pathway in which Trp is first converted into indole-3-pyruvate (IPA) by the TAA fam...

In addition to polyamine homoeostasis, it has become increasingly clear that polyamine catabolism can play a dominant role in drug response, apoptosis and the response to stressful stimuli, and contribute to the aetiology of several pathological states, including cancer. The highly inducible enzymes SSAT (spermidine/spermine N1-acetyltransferase) and SMO (spermine oxidase) and the generally con...

Gibson, D. T., Koch, J. R., Schuld, C. L. & Kallio, R. E. (1968) Biochemistry 7,3795-3802 Goldman, P. (1972~) in Ciba Found. Symp.: Carbon-Fluorine Compounds: Chemistry, Biochemistry and Biological Activities, pp. 335-349, Elsevier Publishing Company, Amsterdam Goldman, P. (1972b) in Degradation of Synthetic Organic Molecules in the Biosphere, pp. 147165, Printing and Publishing Office, Nationa...

Recently, the phenomenon of quantum-classical correspondence breakdown was uncovered in optomechanics, where in the classical regime the system exhibits chaos but in the corresponding quantum regime the motion is regular - there appears to be no signature of classical chaos whatsoever in the corresponding quantum system, generating a paradox. We find that transient chaos, besides being a physic...

Glucose catabolism in eight Xanthomonas species has been comparatively examined by means of the radiorespirometric method. The basic mechanisms for the respective xanthomonads closely resembled each other. The Entner-Doudoroff pathway, in conjunction with the tricarboxylic acid cycle pathway, was the predominant mechanism for glucose catabolism. A small portion (8 to 16%) of substrate glucose w...

In this study we examine the effects of intravenous ethyl oleate emulsions on the metabolism of native and cyclohexanedione-modified human low density lipoprotein in rabbits. Treatment produced a highly significant faU in receptor-independent catabolism as measured by the fractional clearance rate of cyclohexanedione-modified low density lipoprotein. Receptor-dependent Catabolism (the differenc...

In this study we examine the effects of intravenous ethyl oleate emulsions on the metabolism of native and cyclohexanedione-modified human low density lipoprotein in rabbits. Treatment produced a highly significant fall in receptor-independent catabolism as measured by the fractional clearance rate of cyclohexanedione-modified low density lipoprotein. Receptor-dependent catabolism (the differen...

Metabolism can be divided into 2 phases – Catabolism and Anabolism. Catabolism is the degradative phase of metabolism in which complex nutrient molecules (lipids, carbohydrates and proteins) are broken down to simpler endproducts such as C02, H20 and NH3 and is accompanied by the synthesis of ATP. Anabolism refers to biosynthetic processes in which simple precursor molecules are enzymatically c...

We investigate the physics underlying the presence of a quasicondensate in a nearly one dimensional, weakly interacting trapped atomic Bose gas. We show that a Hartree-Fock (mean-field) approach fails to predict the existence of the quasicondensate in the center of the cloud: the quasicondensate is generated by interaction-induced correlations between atoms and not by a saturation of the excite...

ABSTRACT Electrochemically active bacteria (EAB) interact electrochemically with electrodes via extracellular electron transfer (EET) pathways. These have attracted significant attention due to their utility in environmental-friendly bioelectrochemical systems (BESs), including microbial fuel cells and electrofermentation systems. The electrochemical activity of EAB is dependent on carbon catab...