Are phloem amino acids involved in the shoot to root control of NO
... or element (Clarkson and Lüttge, 1991; Logan et al., 1997). Little is known about the endogenous signals triggering this response, but a common hypothesis is that root uptake systems are under negative feedback control by the root concentration of the ion they take up (or of its metabolic products) ...
... or element (Clarkson and Lüttge, 1991; Logan et al., 1997). Little is known about the endogenous signals triggering this response, but a common hypothesis is that root uptake systems are under negative feedback control by the root concentration of the ion they take up (or of its metabolic products) ...
Enzyme
... • It is an inorganic ion which loosely bound to an enzyme or an substrate to increase the chance to an enzyme-substrate complex forming. Some times, the inorganic ions are free and does not bind to the enzyme or substrate, • e.g. copper, iron, calcium, Cl- etc. ...
... • It is an inorganic ion which loosely bound to an enzyme or an substrate to increase the chance to an enzyme-substrate complex forming. Some times, the inorganic ions are free and does not bind to the enzyme or substrate, • e.g. copper, iron, calcium, Cl- etc. ...
The Effect of Actidione and other Antifungal Agents on Nucleic Acid
... Investigations on the mode of action of many antibiotics have shown that in a number of cases the biochemical lesion resulting in the bacteriostatic or bacteriocidal effect is located in the sequence of reactions leading to the synthesis of nucleic acid or protein. Fitzgerald, Bernheim & Fitzgerald ...
... Investigations on the mode of action of many antibiotics have shown that in a number of cases the biochemical lesion resulting in the bacteriostatic or bacteriocidal effect is located in the sequence of reactions leading to the synthesis of nucleic acid or protein. Fitzgerald, Bernheim & Fitzgerald ...
The Proteins of the Keratin Component of Bird`s Beaks
... Charge heterogeneity of the proteins was studied by electrophoresis on cellulose acetate in urea at pH 8·9 (Blagrove et al. 1975) and in urea (6 M), citric acid (0·2 M) and sodium chloride (0·03 M) at pH2·9. Electrophoresis of the S-carboxymethyl proteins in sodium dodecyl sulphate (SDS)-polyacrylam ...
... Charge heterogeneity of the proteins was studied by electrophoresis on cellulose acetate in urea at pH 8·9 (Blagrove et al. 1975) and in urea (6 M), citric acid (0·2 M) and sodium chloride (0·03 M) at pH2·9. Electrophoresis of the S-carboxymethyl proteins in sodium dodecyl sulphate (SDS)-polyacrylam ...
Nitrogen catabolite repressible GAP1 promoter, a new tool for
... mediate uptake of all protein amino acids, several nonprotein amino acids (e.g., ornithine, citrulline, gammaaminobutyic acid, beta-alanine) and toxic analogs. Gap1 shows very high affinity for most of its natural substrates, with apparent Km values in the micromolar range [13]. These properties are ...
... mediate uptake of all protein amino acids, several nonprotein amino acids (e.g., ornithine, citrulline, gammaaminobutyic acid, beta-alanine) and toxic analogs. Gap1 shows very high affinity for most of its natural substrates, with apparent Km values in the micromolar range [13]. These properties are ...
Genetic code ambiguity: an unexpected source of proteome
... Sources of genetic code ambiguity during genome translation into the proteome. Codons may be misassigned to amino acids due to tRNA mischarging by aminoacyl-tRNA synthetases (aaRSs) or due to codon misreading during mRNA decoding in the ribosome. Mischarging of tRNAs may be caused by the failure of ...
... Sources of genetic code ambiguity during genome translation into the proteome. Codons may be misassigned to amino acids due to tRNA mischarging by aminoacyl-tRNA synthetases (aaRSs) or due to codon misreading during mRNA decoding in the ribosome. Mischarging of tRNAs may be caused by the failure of ...
How to ID an Unknown Organism
... • If an organism has the ability to ferment sugars, the end products of the fermentation process are acids. We are looking for fermentation with acid (A) or acid + gas (AG). If there is fermentation, it will be yellow. If there is gas, the inverted miniature tube inside the media will fill with a ga ...
... • If an organism has the ability to ferment sugars, the end products of the fermentation process are acids. We are looking for fermentation with acid (A) or acid + gas (AG). If there is fermentation, it will be yellow. If there is gas, the inverted miniature tube inside the media will fill with a ga ...
Chapter 7 - Metabolism
... a. energy, fatty acids b. glucose, acetyl CoA c. oxygen, lactate d. glycogen, glucose Copyright © 2011, Pearson Education, Inc., publishing as Pearson Benjamin Cummings. ...
... a. energy, fatty acids b. glucose, acetyl CoA c. oxygen, lactate d. glycogen, glucose Copyright © 2011, Pearson Education, Inc., publishing as Pearson Benjamin Cummings. ...
Photosynthesis in Hydrogen-Dominated Atmospheres
... chemical energy on the surface of the Earth, so any form of life that evolves the ability to capture light energy will be able to out-compete its non-photosynthetic sister species, at least for growth on the surface of the planet. Light will be an abundant and accessible energy source on the surface ...
... chemical energy on the surface of the Earth, so any form of life that evolves the ability to capture light energy will be able to out-compete its non-photosynthetic sister species, at least for growth on the surface of the planet. Light will be an abundant and accessible energy source on the surface ...
Maintaining proton homeostasis is an essential role of
... maintaining cellular microenvironment, and provide a better understanding of the essential requirement of aerobic glycolysis for proliferating cells whose active anabolism consumes a great many protons. ...
... maintaining cellular microenvironment, and provide a better understanding of the essential requirement of aerobic glycolysis for proliferating cells whose active anabolism consumes a great many protons. ...
file ini - Pusat Penelitian Biologi
... and capacity of phosphatases enzyme activity, as due to availability of phosphorous content in the medium identified by Barik & Purushothaman (1998). In the other hand, there is increasing evidence that phosphobacteria improve plant caused to biosynthesis of plant growth substances rather than their ...
... and capacity of phosphatases enzyme activity, as due to availability of phosphorous content in the medium identified by Barik & Purushothaman (1998). In the other hand, there is increasing evidence that phosphobacteria improve plant caused to biosynthesis of plant growth substances rather than their ...
Insect Biochemistry 15:
... study represents the first purification of this enzyme from insects to homogeneity. The study of the insect neuromuscular junction is likely to uncover a unique biochemical region, in that other animals (except crustaceans) are only known to possess cholinergically mediated nerve-muscle transmission ...
... study represents the first purification of this enzyme from insects to homogeneity. The study of the insect neuromuscular junction is likely to uncover a unique biochemical region, in that other animals (except crustaceans) are only known to possess cholinergically mediated nerve-muscle transmission ...
PDF - The Journal of General Physiology
... This month’s installment of Generally Physiological focuses on mitochondria, exploring circadian regulation of mitochondrial oxidative metabolism, what happens when you eliminate the mitochondrial calcium uniporter, and Ca2+ transport by the inner mitochondrial membrane protein Letm1. ...
... This month’s installment of Generally Physiological focuses on mitochondria, exploring circadian regulation of mitochondrial oxidative metabolism, what happens when you eliminate the mitochondrial calcium uniporter, and Ca2+ transport by the inner mitochondrial membrane protein Letm1. ...
Get - Wiley Online Library
... Occurrence and Properties . Purines and Purine Nucleotides: Structure, Occurrence and Properties . Dinucleotides and Oligonucleotides ...
... Occurrence and Properties . Purines and Purine Nucleotides: Structure, Occurrence and Properties . Dinucleotides and Oligonucleotides ...
The prebiotic molecules observed in the interstellar gas
... intensity of the molecular radio emission lines in space depends mainly on two factors, both of which can be well determined: the molecular electric dipole moment and the rotational partition function, which depends on the populations of the various levels. For stable molecules, the dipole moment ca ...
... intensity of the molecular radio emission lines in space depends mainly on two factors, both of which can be well determined: the molecular electric dipole moment and the rotational partition function, which depends on the populations of the various levels. For stable molecules, the dipole moment ca ...
Molecular genetics of the carotenoid biosynthesis pathway in plants
... Biosynthesis of carotenoids occurs in all photosynthetic organisms - bacteria, algae and plants, as well as in some non-photosynthetic bacteria and fungi. The intermediate steps in the carotenoid biosynthesis pathway were postulated several decades ago by standard biochemical analyses using labeled ...
... Biosynthesis of carotenoids occurs in all photosynthetic organisms - bacteria, algae and plants, as well as in some non-photosynthetic bacteria and fungi. The intermediate steps in the carotenoid biosynthesis pathway were postulated several decades ago by standard biochemical analyses using labeled ...
Sample Paper – 2013 Class – XII Subject – Chemistry GENERAL
... * Questions 1 to 8 carry one mark each. Answer them in one word or a sentence. * Questions 9 to 18 carry 2 marks each. Answer them in 20 to 30 words. * Questions 19 to 27 carry 3 marks each. Answer them in 40 to 50 words. * Questions 28 to 30 carry 5 marks each. Answer them in 70 words. * There is n ...
... * Questions 1 to 8 carry one mark each. Answer them in one word or a sentence. * Questions 9 to 18 carry 2 marks each. Answer them in 20 to 30 words. * Questions 19 to 27 carry 3 marks each. Answer them in 40 to 50 words. * Questions 28 to 30 carry 5 marks each. Answer them in 70 words. * There is n ...
Mineral Catalysis and Prebiotic Synthesis: Montmorillonite
... the Murchison meteorite contains seventeen classes of organics compounds that seem to have been formed by random processes (Cronin 1998). Given this chemical diversity, a process like catalysis is required to select just those compounds that can react and combine to form the complex biomolecules and ...
... the Murchison meteorite contains seventeen classes of organics compounds that seem to have been formed by random processes (Cronin 1998). Given this chemical diversity, a process like catalysis is required to select just those compounds that can react and combine to form the complex biomolecules and ...
Effect of essential and non-essential amino acid addition to a
... The basal endogenous AA losses are defined as the quantities of AA found in the terminal ileum which are independent of diet (Stein et al., 2007). It is assumed that they represent the minimum inevitable AA losses, originating mainly from digestive secretions, sloughed-off epithelial cells and mucin ...
... The basal endogenous AA losses are defined as the quantities of AA found in the terminal ileum which are independent of diet (Stein et al., 2007). It is assumed that they represent the minimum inevitable AA losses, originating mainly from digestive secretions, sloughed-off epithelial cells and mucin ...
Pyruvate Dehydrogenase
... Glycolysis occurs in the cytosol of cells. Pyruvate enters the mitochondrion to be metabolized further. Mitochondrial Compartments: ...
... Glycolysis occurs in the cytosol of cells. Pyruvate enters the mitochondrion to be metabolized further. Mitochondrial Compartments: ...
Metabolism
Metabolism (from Greek: μεταβολή metabolē, ""change"") is the set of life-sustaining chemical transformations within the cells of living organisms. These enzyme-catalyzed reactions allow organisms to grow and reproduce, maintain their structures, and respond to their environments. The word metabolism can also refer to all chemical reactions that occur in living organisms, including digestion and the transport of substances into and between different cells, in which case the set of reactions within the cells is called intermediary metabolism or intermediate metabolism.Metabolism is usually divided into two categories: catabolism, the breaking down of organic matter by way of cellular respiration, and anabolism, the building up of components of cells such as proteins and nucleic acids. Usually, breaking down releases energy and building up consumes energy.The chemical reactions of metabolism are organized into metabolic pathways, in which one chemical is transformed through a series of steps into another chemical, by a sequence of enzymes. Enzymes are crucial to metabolism because they allow organisms to drive desirable reactions that require energy that will not occur by themselves, by coupling them to spontaneous reactions that release energy. Enzymes act as catalysts that allow the reactions to proceed more rapidly. Enzymes also allow the regulation of metabolic pathways in response to changes in the cell's environment or to signals from other cells.The metabolic system of a particular organism determines which substances it will find nutritious and which poisonous. For example, some prokaryotes use hydrogen sulfide as a nutrient, yet this gas is poisonous to animals. The speed of metabolism, the metabolic rate, influences how much food an organism will require, and also affects how it is able to obtain that food.A striking feature of metabolism is the similarity of the basic metabolic pathways and components between even vastly different species. For example, the set of carboxylic acids that are best known as the intermediates in the citric acid cycle are present in all known organisms, being found in species as diverse as the unicellular bacterium Escherichia coli and huge multicellular organisms like elephants. These striking similarities in metabolic pathways are likely due to their early appearance in evolutionary history, and their retention because of their efficacy.