5 edition of Copper proteins found in the catalog.
Includes bibliographical references and indexes.
|Statement||edited by Helmut Sigel, with the assistance of Astrid Sigel.|
|Series||Metal ions in biological systems,, v. 13|
|Contributions||Sigel, Helmut., Sigel, Astrid.|
|LC Classifications||QP532 .M47 vol. 13, QP552.C64 .M47 vol. 13|
|The Physical Object|
|Pagination||xx, 394 p. :|
|Number of Pages||394|
|LC Control Number||81012629|
Johnson, B. Hemerythrin Hemerythrin is used to transport O2 in a variety of marine invertebrates. The Cu-alpha-synuclein complex itself is also Copper proteins book of oxidizing other endogenous antioxidants, for example, GSH [ 58 ]. The alpha-synuclein protein binds copper. The authors further discussed the implications of oxidized ceruloplasmin because this event would lead not only to alterations in the iron efflux from the brain but also to the possibility of releasing copper from the enzyme, yielding free copper ions to be available for the production of even more free radicals.
Protein Sci. This duality makes copper interesting for the study of neurodegenerative diseases. Singleton, M. Mollusc tyrosinase, B. This transporter is also expressed abundantly in the choroid plexus and, as opposed to its function in the BBB, transports copper out of the brain in the BCB [ ].
Pedley, Eds. Comparative protein modelling by satisfaction of spatial restraints. Water, hydroxide and alkoxide oxygens are also used. Increased ferroportin expression is associated with neuronal survival after Fe overload [ ].
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The second may be debatable, but it is more probable to occur in this way because the free ion is more diffusible and available. The symptoms of acute copper poisoning include nausea, vomiting and abdominal and muscle pain. In fact, hemocyanin is so foreign to humans that it is one of the major factors responsible for the common allergies to shellfish.
These and organic copper salts are powerful emetics and inadvertent large doses are normally rejected by vomiting. Riederer, E. The structure of plastocyanin from the cyanobacterium Phormidium laminosum.
Figure 1 Domain architecture, copper-binding site alignment and origin of type-3 copper protein subclasses. Alpha-synuclein aggregation causes dysfunction Copper proteins book the ubiquitin-proteasome system [ 56 ].
In plants, catechol oxidase genes display a dynamic and complex evolutionary pattern e. Chronic copper poisoning is also very rare and the few reports refer to patients with liver disease. Research suggests that copper deficiency is one factor leading Copper proteins book an increased risk of developing Copper proteins book heart disease.
ATP7A and ATP7B are expressed in neuronal cell bodies in some brain regions, and both of them are expressed in the cytoplasm of neurons in the substantia nigra; only ATP7B is associated with neuromelanin [ ]. In the United Kingdom, it is now recommended that the daily intake should range from 0.
In addition to their Copper proteins book of editing amyloid precursor proteins, presenilins are related to copper transport and homeostasis. This placeholder residue varies, depending on the species and type-3 copper protein subclass.
Research is going on into anti-ulcer and anti-inflammatory medicines containing copper, and its use in radiology and for treating convulsions and epilepsy. However, due to the delicate equilibrium in copper homeostasis and the need for research about the distribution of copper in different compartments of the brain and other organs, therapeutic strategies trying to adjust the copper levels in the brain must be undertaken with caution.
From a structural and spectroscopic point of view, the three main types of biologically active copper centres found in the copper proteins may be distinguished according to a generally accepted convention deriving mainly from from their electron paramagnetic resonance EPR spectra.
Structural changes at the binuclear copper active site underlie the evolution of tyrosinase, catechol oxidase and hemocyanin functionalities Homology modelling of type-3 copper proteins based on published crystal structures [ 38 — 414546 ] and pairwise comparisons provides insight into the functional constraints on amino acids associated with the active site and how steric effects might underlie differences in molecular oxygen binding and the enzymatic activity of tyrosinases, tyrosinase-related proteins, catechol oxidases and hemocyanins.
The direct injection of copper sulfate into the substantia nigra of rodents has also been tested, and the authors assayed several copper doses, finding that noxious copper effects began at 50 nmoles intranigral, which is fivefold greater than the values of iron necessary to produce damage.
Caeruloplasmin has several of these functions, and is a blue colour, hence the recently acquired description as a "moonlighting' protein.
Importance of protein rearrangement in the electron-transfer reaction between the physiological partners cytochrome f and plastocyanin. The structural homology of amicyanin from Thiobacillus versutus to plant plastocyanins.
As a whole, this combination of symptoms leads to disability and dependency. Solution structure of the type 1 blue copper protein amicyanin from Thiobacillus versutus.
In solution, ATOX1 exists as a monomer, but, in the presence of metals, it can form dimers [ ]. Abstract Blue copper proteins are type-I copper-containing redox proteins whose role is to shuttle electrons from an electron donor to an electron acceptor in bacteria and plants.
Plastocyanin: structural and functional analysis. Individuals carrying the defective gene die at an Copper proteins book age, evidencing the pivotal role of copper in development. In fact, it is claimed that presenilin ablation may diminish the activity of copper-dependent SODs because Copper proteins book the decreased availability of intracellular copper [ 98 ].
Copper is an essential cofactor in a diversity of biological oxidation-reduction reactions due to its existence Copper proteins book either a reduced (Cu +) or an oxidized (Cu 2+) state [1–3].Oxidized copper preferentially coordinates with oxygen in aspartic and glutamic acids or with the imidazole nitrogen group in histidines , allowing interactions with a wide spectrum of by: Copper Proteins and Enzymes By David Crochet.
Properties of Copper • Two isotopes Cu‐63 and Cu‐65 • Both have a nuclear spin of 3/2 • Is usually ligated by Histidine, Cystiene, Aspartic acid, Tyrosine, or sulfide File Size: 1MB.
Copper combines with certain proteins to produce enzymes that act as catalysts to help a number of body functions. Some help provide energy required by biochemical reactions.
Others are involved in the transformation of melanin for pigmentation of the skin and still others help to form cross-links in collagen and elastin and thereby maintain.Thus, I have tried to make this a source pdf for historic pdf well as current information on all aspects of copper bio chemistry, and a summary of our current knowledge of copper-dependent proteins and processes.
Most of the research on copper has been carried out on vertebrates, especially s: 1. Copper. Molybdenum interacts with protein-bound copper in and outside the cells and can even remove copper from the tissues, so excess molybdenum contributes to copper deficiency.
Molybdenum can also be used to treat problems associated with excess levels of copper, such as Wilson’s disease.The subject matter ebook in this book is divided into four parts. These are: 1) the iron-sulfur proteins ebook are not a part of the mitochondrial electron transport system); 2) the iron-sulfur proteins and heme proteins of the mitochondrial electron transport system; 3) other heme and nonheme iron proteins; and 5) selected copper proteins.