Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Protein complexity

Figure Bl.17.6. A protein complex (myosin SI decorated filamentous actin) embedded in a vitrified ice layer. Shown is a defociis series at (a) 580 mn, (b) 1130 mn, (c) 1700 mn and (d) 2600 mn underfocus. The pictures result from averagmg about 100 individual images from one electron micrograph the decorated filament length shown is 76.8 nm. Figure Bl.17.6. A protein complex (myosin SI decorated filamentous actin) embedded in a vitrified ice layer. Shown is a defociis series at (a) 580 mn, (b) 1130 mn, (c) 1700 mn and (d) 2600 mn underfocus. The pictures result from averagmg about 100 individual images from one electron micrograph the decorated filament length shown is 76.8 nm.
In light of tire tlieory presented above one can understand tliat tire rate of energy delivery to an acceptor site will be modified tlirough tire influence of nuclear motions on tire mutual orientations and distances between donors and acceptors. One aspect is tire fact tliat ultrafast excitation of tire donor pool can lead to collective motion in tire excited donor wavepacket on tire potential surface of tire excited electronic state. Anotlier type of collective nuclear motion, which can also contribute to such observations, relates to tire low-frequency vibrations of tire matrix stmcture in which tire chromophores are embedded, as for example a protein backbone. In tire latter case tire matrix vibration effectively causes a collective motion of tire chromophores togetlier, witliout direct involvement on tire wavepacket motions of individual cliromophores. For all such reasons, nuclear motions cannot in general be neglected. In tliis connection it is notable tliat observations in protein complexes of low-frequency modes in tlie... [Pg.3027]

Kolubayev T, Geacintov N E, Paillotin G and Breton J 1985 Domain sizes in chloroplasts and chlorophyll-protein complexes probed by fluorescence yield quenching induced by singlet-triplet exciton annihilation Biochimica Biophys. Acta 808 66-76... [Pg.3031]

Zinc is important biologically there are many zinc-protein complexes, and the human body contains about 2 g. In the human pancreas, zinc ions appear to play an essential part in the storage of insulin. [Pg.419]

The development of efficient algorithms and the sophisticated description of long-range electrostatic effects allow calculations on systems with 100 000 atoms and more, which address biochemical problems like membrane-bound protein complexes or the action of molecular machines . [Pg.398]

Rec tor. Receptors are membrane-bound or soluble proteins or protein complexes exerting a physiological effect after binding of an agonist. [Pg.599]

A number of structured databases have been developed to classify proteins according to the three-dimensional structures. Many of these are accessible via the World Wide Web, T1 protein databanlc (PDB [Bernstein d al. 1977]) is the primary source of data about the stru tures of biological macromolecules and contains a large number of structures, but many i these are of identical proteins (complexed with different ligands or determined at differet resolutions) or are of close homologues. [Pg.555]

Staphylococcal a-hemolysin is another widely studied pore-forming toxin. It is used by infectious bacteria to perforate host animal cells by a mechanism that is distinct from that of gramicidin. Several aspects of the stmcture and function of this heptameric protein complex have been smdied. [Pg.201]

Lead is toxic to the kidney, cardiovascular system, developiag red blood cells, and the nervous system. The toxicity of lead to the kidney is manifested by chronic nephropathy and appears to result from long-term, relatively high dose exposure to lead. It appears that the toxicity of lead to the kidney results from effects on the cells lining the proximal tubules. Lead inhibits the metaboHc activation of vitamin D in these cells, and induces the formation of dense lead—protein complexes, causing a progressive destmction of the proximal tubules (13). Lead has been impHcated in causing hypertension as a result of a direct action on vascular smooth muscle as well as the toxic effects on the kidneys (12,13). [Pg.78]

Process Va.ria.tlons. The conventional techniques for tea manufacture have been replaced in part by newer processing methods adopted for a greater degree of automation and control. These newer methods include withering modification (78), different types of maceration equipment (79), closed systems for fermentation (80), and fluid-bed dryers (81). A thermal process has been described which utilizes decreased time periods for enzymatic reactions but depends on heat treatment at 50—65°C to develop black tea character (82). It is claimed that tannin—protein complex formation is decreased and, therefore, greater tannin extractabiUty is achieved. Tea value is beheved to be increased through use of this process. [Pg.372]

Chiral Chromatography. Chiral chromatography is used for the analysis of enantiomers, most useful for separations of pharmaceuticals and biochemical compounds (see Biopolymers, analytical techniques). There are several types of chiral stationary phases those that use attractive interactions, metal ligands, inclusion complexes, and protein complexes. The separation of optical isomers has important ramifications, especially in biochemistry and pharmaceutical chemistry, where one form of a compound may be bioactive and the other inactive, inhibitory, or toxic. [Pg.110]

A method of detecting herbicides is proposed the photosynthetic herbicides act by binding to Photosystem II (PS II), a multiunit chlorophyll-protein complex which plays a vital role in photosynthesis. The inhibition of PS II causes a reduced photoinduced production of hydrogen peroxide, which can be measured by a chemiluminescence reaction with luminol and the enzyme horseradish peroxidase (HRP). The sensing device proposed combines the production and detection of hydrogen peroxide in a single flow assay by combining all the individual steps in a compact, portable device that utilises micro-fluidic components. [Pg.332]

These difficulties have prompted a search for novel techniques for crystallization of membrane proteins. Two approaches have given promising results one using antibodies to solubilize the proteins and the second using continuous lipidic phases as crystallization media. Complexes with specific antibodies have larger polar surfaces than the membrane protein itself and are therefore likely to form crystals more easily in an aqueous enviroment. A recent example of an antibody-membrane protein complex utilized an Fv... [Pg.224]

The interiors of rhodopseudomonad bacteria are filled with photosynthetic vesicles, which are hollow, membrane-enveloped spheres. The photosynthetic reaction centers are embedded in the membrane of these vesicles. One end of the protein complex faces the Inside of the vesicle, which is known as the periplasmic side the other end faces the cytoplasm of the cell. Around each reaction center there are about 100 small membrane proteins, the antenna pigment protein molecules, which will be described later in this chapter. Each of these contains several bound chlorophyll molecules that catch photons over a wide area and funnel them to the reaction center. By this arrangement the reaction center can utilize about 300 times more photons than those that directly strike the special pair of chlorophyll molecules at the heart of the reaction center. [Pg.235]

Deisenhofer, J., et al. X-ray structure analysis of a membrane protein complex. Electron density map at 3 A resolution and a model of the chromophores of the photosynthetic reaction center from Rhodopseudomonas viridis. f. Mol. Biol. 180 385-398, 1984. [Pg.249]

Michel, H. Three-dimensional crystals of a membrane protein complex. The photosynthetic reaction center from Rhodopseudomonas viridis.. Mol. Biol. [Pg.249]

Nucleosome (Section 28.9) A DNA-protein complex by which DNA is stored in cells. [Pg.1289]

FIGURE 17. 33 A model of the flagellar motor assembly of Escherichia coli. The M ring carries an array of about 100 motB proteins at its periphery. These juxtapose with motA proteins in the protein complex that snrronnds the ring assembly. Motion of protons throngh the motA/motB complexes drives the rotation of the rings and the associated rod and helical filament. [Pg.562]

Hoenger, A., Sablin, E., Vale, R., et al., 1995. Three-dimensional structure of a tnbnlin-motor-protein complex. Nature... [Pg.564]

Protein Complexes of the Mitochondrial Electron-Transport Cham ... [Pg.681]

Three protein complexes have been isolated, including the flavoprotein (FP), iron-sulfur protein (IP), and hydrophobic protein (HP). FP contains three peptides (of mass 51, 24, and 10 kD) and bound FMN and has 2 Fe-S centers (a 2Fe-2S center and a 4Fe-4S center). IP contains six peptides and at least 3 Fe-S centers. HP contains at least seven peptides and one Fe-S center. [Pg.683]

Thus, Og and cytochrome c oxidase are the final destination for the electrons derived from the oxidation of food materials. In concert with this process, cytochrome c oxidase also drives transport of protons across the inner mitochondrial membrane. These important functions are carried out by a transmembrane protein complex consisting of more than 10 subunits (Table 21.2). [Pg.689]

Detergent treatment of a suspension of thylakoids dissolves the membranes, releasing complexes containing both chlorophyll and protein. These chlorophyll-protein complexes represent integral components of the thylakoid membrane, and their organization reflects their roles as either light-harvesting com-... [Pg.717]


See other pages where Protein complexity is mentioned: [Pg.1638]    [Pg.1645]    [Pg.1647]    [Pg.2511]    [Pg.2961]    [Pg.2977]    [Pg.409]    [Pg.66]    [Pg.610]    [Pg.202]    [Pg.278]    [Pg.62]    [Pg.3]    [Pg.66]    [Pg.441]    [Pg.458]    [Pg.459]    [Pg.235]    [Pg.256]    [Pg.536]    [Pg.297]    [Pg.298]    [Pg.562]    [Pg.562]    [Pg.681]    [Pg.714]    [Pg.717]    [Pg.725]   
See also in sourсe #XX -- [ Pg.57 ]




SEARCH



Activating protein 1 complexes

Activator protein-1 complex

Adaptor protein complex

Affinity purification of RNA-protein complexes

Amicyanin protein complex

Apical protein complex

Aptamer protein complexes, analysis

Bacteriochlorophyll-protein complex structure

Bacteriochlorophyll-protein complexes

Binding Protein Complex eIF

Binding protein-enzyme complex

Calcium complexes proteins

Carbohydrates protein complexes

Carotenoid-protein complexes

Chitin protein complexes

Chitin-protein complex from

Chlorins protein complexes

Chlorophyll protein complex

Chlorophyll-carotenoid-protein complexe

Chloroplasts protein complexes

Chondroitin sulfate-protein complex, biosynthesis

Coactivator-complex proteins

Coagulation proteins prothrombin complex concentrate

Colloidal gold protein complexes

Complex Rieske iron sulfur protein

Complex lipids, synthesis proteins

Complex mixtures, protein components

Complex protein molecules

Complex protein-polysaccharide

Complex protein-surfactant

Complex proteins

Complex proteins

Complex proteomes proteins

Complex systems lipid-protein mixtures and cell membranes

Complex systems protein folding

Complexation with Proteins

Complexed protein spectra

Complexes gold-protein

Complexes protein-substrate

Complexes with proteins

Contractile protein complex

Copper coordination complexes, models proteins

Copper proteins model complexes

Copper proteins normal” complexes

Copper, complexes proteins

Cross-linked protein complexes

Crystallographic protein-ligand complexes

Cysteine-Containing Oligopeptide Model Complexes of Iron-Sulfur Proteins

Cytochrome protein—electrode complex

DNA complex with Trp repressor protein

DNA complex with zinc finger protein

DNA-protein complexes

Database ligand-protein complex

Detergent-protein complexes

Dinuclear copper proteins model complexes

DnaK, Hsp70-protein complexes

Dynamics of water around a protein-DNA complex

Dystrophin-associated protein complex

Electron-transport assemblies protein complexes

Factors influencing protein-polyelectrolyte complexes

Formation of RNA-protein complexes

Fruit juice protein complex

Functional analysis of RNA-protein complexes in vitro

G protein complex

G protein-coupled receptors complexes

Glucan mannan-protein complex

Glycans protein complexes

Glycosidic bond, protein-carbohydrate complexes

Gold-Protein Reactions and Complexes

Golgi complex protein glycosylation

Golgi complex protein modification

H-bonds in Protein-Nucleic Acid Complexes

Heme proteins model complexes

Heparin protein complex

Heparinic acid protein complex

High-Spin NO Complexes with Non-Heme Iron Proteins

High-quality ligand-protein complexes

Hormone protein complex

Hsp70-protein complexes

Hyaluronic acid complex with protein

Hyaluronic acid, complex formation with proteins

I 6 Hydrogen Bonds in Protein-Ligand Complexes

Inclusion complexes with proteins

Interaction protein complexes

Iodine complex protein effects

Iron succinyl-protein complex

Iron-protein complex

Iron-sulfur protein complex

Iron-sulfur proteins high-potential, thiolate complexes

Iron-sulfur proteins nitric oxide complexes

Kinetic Complexity of Protein Electron Transfer Reactions

Labeling of Proteins with Organometallic Complexes Strategies and Applications

Lactose-protein complexes

Ligand-protein complexes, induction

Ligand-protein complexes, induction functional

Ligand-protein complexes, induction functionals

Ligands as Wrappers of Proteins in PDB Complexes Bioinformatics Evidence

Light-harvesting complex proteins

Light-harvesting pigment protein complex

Light-harvesting pigment protein complex isolation

Light-harvesting pigment protein complex model

Light-harvesting pigment protein complex photosynthetic bacteria

Ligno-protein complexes

Lipid-Protein Complexes

Lipide-protein complex

MRNA-protein complex

Magnesium protein complex

Magnetic susceptibility, heme protein complexes

Major histocompatibility complex MHC) proteins

Major histocompatibility complex class I proteins

Major histocompatibility complex proteins

Major histocompatibility complex proteins class

Major histocompatibility complex proteins peptide presentation

Major histocompatibility complex proteins structure

Mammalian achaete-scute complex-like protein

Manganese complexes proteins

Mannan protein complex

Mannans protein complex with

Mass spectrometry metal-protein complexes

Membrane bound protein complex

Metal-complexes with Proteins

Metallo-protein complexes

Methylamine dehydrogenase protein complex

Mitochondria protein complexes

Mitochondrial lipid-protein complexes

Mixed protein gels, complex

Mn protein complex

Molecular complexes proteins

Monoclonal antibodies complexed with protein

Mucopolysaccharides mucopolysaccharide-protein complex

Nanoparticle-protein complex

Nitric Oxide Complexes of Ferrohemes in Proteins

Nitric Oxide Complexes of Iron-Sulfur Proteins

Nitric Oxide Complexes of Other Nonheme Iron Proteins

Nitric oxide complexes nonheme iron proteins

Oligosaccharide-protein complexes

Peridinin chlorophyll-protein complex

Photosynthetic pigment-protein complexes

Photosystem protein complexes

Phytate protein complex

Pigment-protein complexes

Pigment-protein complexes Photosystem

Pigment-protein complexes light-harvesting complex

Plasticity protein complexes

Poly globular protein complexation

Poly protein complexes

Polyelectrolyte complexes (polyion protein

Polyelectrolyte complexes protein carriers

Polyelectrolyte-protein complexes

Polyelectrolyte-protein complexes coacervation

Polyelectrolyte-protein complexes enzyme activity

Polyelectrolyte-protein complexes precipitation

Polyelectrolyte-protein complexes solubility

Polysaccharide-protein complexes/interactions

Potato starch complexation with proteins

Preparation of Protein A-Gold Complexes

Protein A-IgG complexes

Protein Complex Formation

Protein antigens structural complexity

Protein cavities, metal complexes

Protein complex isolated from culture

Protein complexes characteristics

Protein complexes native

Protein complexes synthetic

Protein complexes with polyelectrolytes

Protein complexes, electron transfer

Protein complexes, interfacial films

Protein complexes, nonspecific

Protein complexes, purification

Protein complexity evolution

Protein folding complex mechanisms

Protein folding complexity

Protein from complex mixtures

Protein kinase replication complex

Protein ligand complexes

Protein lipid complex, disadvantages

Protein multienzyme complexes

Protein nucleic acid complexes

Protein polyphenol complexes

Protein reagent complex, equilibrium

Protein supramolecular chemistry enzyme complexes

Protein tyrosine kinases signaling complexes

Protein-Small Molecule Complexes

Protein-carbohydrate complexes, computer

Protein-cellodextrin complexes

Protein-drug complex

Protein-electrolyte complexes

Protein-enzyme complexes

Protein-inhibitor complexes

Protein-inhibitor complexes, conformational

Protein-inhibitor complexes, conformational energies

Protein-ligand complexes, binding mode

Protein-ligand complexes, molecular

Protein-ligand complexes, molecular recognition

Protein-ligand docking complexes

Protein-ligand interactions/complexes

Protein-lipid respiratory chain complexes

Protein-peptide interactions/ complexes

Protein-phospholipid complex

Protein-phospholipid complex, physical

Protein-polyelectrolyte complexes, factors

Protein-saccharide complexes

Protein-small molecule interactions/ complexes

Protein-starch complexes

Protein-starch complexes characteristics

Protein-starch complexes native

Protein-starch complexes synthetic

Protein-surfactant complexation

Protein-surfactant complexes, solubilizing

Proteins ODNA) complex

Proteins SDS complexes

Proteins TCDD complex

Proteins avidin-biotin complex

Proteins carbohydrate complexes with

Proteins complexation

Proteins complexation

Proteins complexes induced

Proteins major histocompatibility complex-associated

Proteins major urinary protein complex

Proteins metal complexes

Proteins protein—ligand complexes

Proteins prothrombin complex activity

Proteins repressive complex

Proteins, complexes with heparin

Proteoglycans mucopolysaccharide-protein complexes

Proteomics protein-complex identification

Quenching probe/protein complexes

Receptor-G protein complex

Renin-protein complex

Retinol-binding protein-transthyretin complex

Ribosome protein complexes

Ruthenium complexes proteins

SIFt and the Analysis of Protein Kinase - Inhibitor Complexes

Scoring protein-ligand complexes

Separation complex protein mixture

Settlement induced protein complex

Settlement-inducing protein complex

Simple and Complex Iron-Sulfur Proteins

Simple and Complex Iron-Sulfur Proteins in Sulfate Reducing

Simple and Complex Iron-Sulfur Proteins in Sulfate Reducing Bacteria

Skpl/Cull/F-Box Protein Complex

Small Molecules in Self-Crystals and Protein-Carbohydrate Complexes

Sodium dodecyl sulfate protein complex

Spectrin-protein 4.1-actin complex

Spin NO Complexes with Non-Heme Iron Proteins

Stability constants protein complexes

Starch phosphates complexation with proteins

Steroid-protein complex

Stress-70 protein family complexes

Synaptonemal complex proteins

TATA binding protein preinitiation complex

TFIIH-A Pivotal Regulatory Protein Complex

Tannin protein complexes

Tannin-protein complexation

The Complexity of Protein Biosynthesis

The complexity of G protein signalling

Thiolate complexes, iron-sulfur proteins

Three-dimensional protein-ligand complex

Toward a Model of the Receptor-G Protein Complex

Trace metals protein complexes

Ubiquitin Domains in Complex Proteins

Ubiquitin complex proteins

Zirconium complexes proteins

© 2024 chempedia.info