PEROXISOMES AND THEIR KEY ROLE IN CELLULAR SIGNALING AND METABOLISM 69 SUBCELLULAR BIOCHEMISTRY

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Peroxisomes And Their Key Role In Cellular Signaling And Metabolism

Author : Luis A. del Rio
ISBN : 9789400768895
Genre : Medical
File Size : 33.47 MB
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Peroxisomes are a class of ubiquitous and dynamic single membrane-bounded cell organelles, devoid of DNA, with an essentially oxidative type of metabolism. In recent years it has become increasingly clear that peroxisomes are involved in a range of important cellular functions in almost all eukaryotic cells. In higher eukaryotes, including humans, peroxisomes catalyze ether phospholipids biosynthesis, fatty acid alpha-oxidation, glyoxylate detoxification, etc, and in humans peroxisomes are associated with several important genetic diseases. In plants, peroxisomes carry out the fatty acid beta-oxidation, photorespiration, metabolism of ROS, RNS and RSS, photomorphogenesis, biosynthesis of phytohormones, senescence, and defence against pathogens and herbivores. In recent years it has been postulated a possible contribution of peroxisomes to cellular signaling. In this volume an updated view of the capacity and function of peroxisomes from human, animal, fungal and plant origin as cell generators of different signal molecules involved in distinct processes of high physiological importance is presented.
Category: Medical

Nitric Oxide In Plants Metabolism And Role In Stress Physiology

Author : M. Nasir Khan
ISBN : 9783319067100
Genre : Science
File Size : 35.76 MB
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This book covers the key features of nitric oxide (NO) in plants. Comprising nine chapters, Part I highlights its metabolism and identification in plants. Part II, which consists of eight chapters, focuses on the chemical, physical and biochemical properties of the NO molecule and its derivatives; on its functional role and mode of action; and on its signaling and interaction with phytohormones, mineral nutrients, biomolecules, ions and ion channels in plants under abiotic stresses. Combining the expertise of leading researchers in the field, the book provides a concise overview of plant NO biology and offers a valuable reference work.
Category: Science

Molecular Machines Involved In Peroxisome Biogenesis And Maintenance

Author : Cecile Brocard
ISBN : 9783709117880
Genre : Science
File Size : 75.47 MB
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In eukaryotes, lipid metabolism requires the function of peroxisomes. These multitasking organelles are also part of species-specific pathways such as the glyoxylate cycle in yeast and plants or the synthesis of ether lipid in mammals. Proteins required for the biogenesis of peroxisomes typically assemble in large molecular complexes, which participate in membrane formation, protein transport, peroxisome duplication and - inheritance during cell division. Peroxisomal function is essential for life. Mutations in PEX genes, encoding for biogenesis factors, are often associated with lethal disorders. The association of peroxisomes with other organelles suggests an extensive participation in organellar crosstalk. This book represents a state-of-the-art review in the field of peroxisome research encompassing the cell and molecular biology of peroxisome biogenesis and its diseases, the protein complexes involved in this process and the modern technologies applied to study them. The book is intended for graduate students, researchers and lecturers in biochemistry, molecular and cell biology with a biomedical background.
Category: Science

Fungal Jewels Secondary Metabolites

Author : Nancy Keller
ISBN : 9782889451364
Genre :
File Size : 50.58 MB
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Fungal natural products are friends and foes of humans such as deleterious mycotoxins, cytotoxic, carcinogenic compounds or beneficial compounds such as antibiotics, fungicides, insecticides, antiviral and antitumor metabolites. Understanding fungal diversity and estimation of fungal species on our planet poses a great challenge to researchers. This complexity is further multiplied by secondary metabolite diversity of fungi, which requires interdisciplinary studies. It is extremely important to understand the fungal secondary metabolism to stop human, animal and plant diseases caused by fungi and harvest their valuable metabolites. Furthermore, many secondary metabolite gene clusters are silenced under laboratory conditions. It is vital to develop effective methods to activate those clusters in order to discover novel potent metabolites. This e-book is a compilation of original review articles contributed by leading fungal secondary metabolite researchers with a wide range of expertise. Important aspects of fungal secondary metabolism, including regulation, genome mining, evolution, synthetic biology and novel methods have been discussed. This book will be a great source to those people, who are interested in understanding overall structure, diversity and regulation of production of these tiny but precious chemicals.
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Lipid Hydroperoxide Derived Modification Of Biomolecules

Author : Yoji Kato
ISBN : 9789400779204
Genre : Medical
File Size : 23.38 MB
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Lipid peroxidation is an important cellular process which can lead to detrimental effects if it is not regulated efficiently. Lipid hydroperoxide is formed in an initial step of lipid peroxidation. Lipid hydroperoxide is also known as a potential source of singlet oxygen. Harmful aldehydes are formed when the lipid hydroperoxide is degraded. The formed aldehyde has high reactivity against thiol or amine moieties. Therefore, it could act as a signaling molecule, which might induce the changing of gears inside a cell. Recent studies have shown that lipid hydroperoxide or a slightly modified product of the lipid hydroperoxide reacts with biomolecules such as proteins and aminophospholipids, which leads to formation of amide-type adducts. Amide-type adducts could be one of markers for oxidative stress and could also be an important player in some diseases. In this book, the chemistry and biochemistry of lipid hydroperoxide along with their conjugates with biomolecules are described.
Category: Medical