Plasmid-Encoded asp Operon Confers a Proton Motive Metabolic Cycle Catalyzed by an Aspartate-Alanine Exchange Reaction
نویسندگان
چکیده
منابع مشابه
Plasmid-encoded asp operon confers a proton motive metabolic cycle catalyzed by an aspartate-alanine exchange reaction.
Tetragenococcus halophila D10 catalyzes the decarboxylation of L-aspartate with nearly stoichiometric release of L-alanine and CO(2). This trait is encoded on a 25-kb plasmid, pD1. We found in this plasmid a putative asp operon consisting of two genes, which we designated aspD and aspT, encoding an L-aspartate-beta-decarboxylase (AspD) and an aspartate-alanine antiporter (AspT), respectively, a...
متن کاملRates of Acid-Catalyzed NH Proton Exchange of Enaminones, an 1H NMR Study
: 1H NMR spectra of a series of enaminones R-CO-CH=C(NHCH2Ph)-R [1, R=CH3; 2, R=C6H5; 3, R=CF3; 4, R=CH2CH2CH2; 5, R=CH2C(CH3)2CH2], were obtained in the presence of trifluoroacetic acid in CDCl3 or DMSO-d6 at 28 °C. S...
متن کاملEnergizing porters by proton-motive force.
It is generally accepted that the chemistry of water was the most crucial determinant in shaping life on earth. Among the more important chemical features of water is its dissociation into protons and hydroxyl ions. The presence of relatively high proton concentrations in the ambient solution resulted in the evolution of proton pumps during the dawn of life on earth. These proton pumps maintain...
متن کاملrates of acid-catalyzed nh proton exchange of enaminones, an 1h nmr study
: 1h nmr spectra of a series of enaminones r-co-ch=c(nhch2ph)-r [1, r=ch3; 2, r=c6h5; 3, r=cf3; 4, r=ch2ch2ch2; 5, r=ch2c(ch3)2ch2], were obtained in the presence of trifluoroacetic acid in cdcl3 or dmso-d6 at 28 °c. steric, solvent, electronic and hydrogen bonding effects on the rates of acid-catalyzed nh proton exchanges were investigated. rate constants were calculated by 1h nmr line shape ...
متن کاملRole of Metabolic Anion Exchange Carriers in the Malate-aspartate Cycle
• Under physiological conditions, the energy requirements of the heart are met primarily by the oxidation of fatty acids, glucose, and lactate (1, 2). Initially, during the metabolism of glucose and lactate, the coenzyme NAD is reduced to NADH and pyruvate is formed in the cytosolic compartment of the myocardial cell. Subsequent entry of pyruvate into the mitochondria for oxidative metabolism i...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 2002
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.184.11.2906-2913.2002