Production and polymerization[edit]. Commercially D5 is produced from dimethyldichlorosilane. Hydrolysis of the dichloride ...
Emulsion Polymerization picture[edit]. Nice diagram, just make sure that it isn't protected by copyright.Delmlsfan (talk) 22:16 ...
Structure and polymerization[edit]. Like other serpins, PAI-2 has three beta sheets (A, B, C) and nine alpha helices (hA-hI).[6 ... Mikus P, Ny T (April 1996). "Intracellular polymerization of the serpin plasminogen activator inhibitor type 2". The Journal of ... PAI-2 exists in three polymeric states: monomeric, polymerigenic, and polymer (inactive state). Polymerization occurs by a so- ... Polymerization of PAI-2 occurs spontaneously under physiological conditions, for instance in the cytosol of placental cells.[12 ...
Polymerization: C8-C9[edit]. Similar hydrophobic sites on C8 and C9 molecules are exposed when they bind to the complex, so ... C5b-6-7-8 subsequently binds to C9[4][5][6] and acts as a catalyst in the polymerization of C9. ... C8 alpha-gamma induces the polymerization of 10-16 molecules of C9 into a pore-forming structure known as the membrane attack ...
Polymerization[edit]. In the presence of strong acids, THF converts to a linear polymer called poly(tetramethylene ether) ...
Polymerization[edit]. Polystyrene results when styrene monomers interconnect. In the polymerisation, the carbon-carbon π bond ... The plastic has a glass transition temperature Tg of ~90 °C. Polymerisation is initiated with free radicals.[7] ... Ziegler-Natta polymerization can produce an ordered syndiotactic polystyrene with the phenyl groups positioned on alternating ... In 1866 Marcelin Berthelot correctly identified the formation of metastyrol/Styroloxyd from styrol as a polymerisation process. ...
insect attraction, polymerization, psoriasis, suntanning BaSi. 2O. 5, Pb 350 40 /09 /79 "BL" insect attraction, suntanning ... medical applications, polymerization Wood's glass tubes manufactured by Osram use a fairly narrow-band emitting phosphor, ...
During the polymerization process, some chemical groups may be lost from each monomer. This happens in the polymerization of ... Staudinger, H (1920). "Über Polymerisation" [On polymerization]. Berichte der Deutschen Chemischen Gesellschaft (in German). 53 ... Newer methods, such as plasma polymerization do not fit neatly into either category. Synthetic polymerization reactions may be ... step-growth polymerization and chain-growth polymerization.[15] The essential difference between the two is that in chain ...
... is implicated in actin polymerization". Cell. 84 (5): 723-34. doi:10.1016/S0092-8674(00)81050-8. PMID 8625410.. ...
... s, also known as guanine nucleotide-binding proteins, are a family of proteins that act as molecular switches inside cells, and are involved in transmitting signals from a variety of stimuli outside a cell to its interior. Their activity is regulated by factors that control their ability to bind to and hydrolyze guanosine triphosphate (GTP) to guanosine diphosphate (GDP). When they are bound to GTP, they are 'on', and, when they are bound to GDP, they are 'off'. G proteins belong to the larger group of enzymes called GTPases.. There are two classes of G proteins. The first function as monomeric small GTPases, while the second function as heterotrimeric G protein complexes. The latter class of complexes is made up of alpha (α), beta (β) and gamma (γ) subunits.[1] In addition, the beta and gamma subunits can form a stable dimeric complex referred to as the beta-gamma complex.. G proteins located within the cell are activated by G protein-coupled receptors (GPCRs) that span the cell ...
Cytoplasmic dynein, which has a molecular mass of about 1.5 megadaltons (MDa), is a dimer of dimers, containing approximately twelve polypeptide subunits: two identical "heavy chains", 520 kDa in mass, which contain the ATPase activity and are thus responsible for generating movement along the microtubule; two 74 kDa intermediate chains which are believed to anchor the dynein to its cargo; two 53-59 kDa light intermediate chains; and several light chains. The force-generating ATPase activity of each dynein heavy chain is located in its large doughnut-shaped "head", which is related to other AAA proteins, while two projections from the head connect it to other cytoplasmic structures. One projection, the coiled-coil stalk, binds to and "walks" along the surface of the microtubule via a repeated cycle of detachment and reattachment. The other projection, the extended tail, binds to the light intermediate, intermediate and light chain subunits which attach dynein to its cargo. The alternating ...
SMC dimers form a V-shaped molecule with two long coiled-coil arms.[14][15] To make such a unique structure, an SMC protomer is self-folded through anti-parallel coiled-coil interactions, forming a rod-shaped molecule. At one end of the molecule, the N-terminal and C-terminal domains together form an ATP-binding domain. The other end is called a hinge domain. Two protomers then dimerize through their hinge domains and assemble a V-shaped dimer.[16][17] The length of the coiled-coil arms is ~50 nm long. Such long "antiparallel" coiled-coils are very rare, and found only among SMC proteins (and its relatives such as Rad50). The ATP-binding domain of SMC proteins is structurally related to that of ABC transporters, a large family of transmembrane proteins that actively transport small molecules across cellular membranes. It is thought that the cycle of ATP binding and hydrolysis modulates the cycle of closing and opening of the V-shaped molecule, but the detailed mechanisms of action of SMC ...
actin filament polymerization. • cell adhesion. • negative regulation of interleukin-23 production. • homeostasis of number of ... positive regulation of actin filament polymerization. • regulation of neuron maturation. • negative regulation of receptor- ... positive regulation of microtubule polymerization. • neutrophil degranulation. • regulation of nitric oxide biosynthetic ...
Main article: Emulsion polymerization. Emulsions are used to manufacture polymer dispersions - polymer production in an ... "Terminology of polymers and polymerization processes in dispersed systems (IUPAC Recommendations 2011)". Pure and Applied ...
The impact of KRAS mutations is heavily dependent on the order of mutations. Primary KRAS mutations generally lead to a self-limiting hyperplastic or borderline lesion, but if they occur after a previous APC mutation it often progresses to cancer.[18] KRAS mutations are more commonly observed in cecal cancers than colorectal cancers located in any other places from ascending colon to rectum.[19][20] KRAS mutation is predictive of a very poor response to panitumumab (Vectibix®) and cetuximab (Erbitux®) therapy in colorectal cancer.[21] Currently, the most reliable way to predict whether a colorectal cancer patient will respond to one of the EGFR-inhibiting drugs is to test for certain "activating" mutations in the gene that encodes KRAS, which occurs in 30%-50% of colorectal cancers. Studies show patients whose tumors express the mutated version of the KRAS gene will not respond to cetuximab or panitumumab.[22] Although presence of the wild-type (or normal) KRAS gene does not guarantee that ...
Polymerization. See also: Ziegler-Natta catalyst and Polyethylene. Polyethylene consumes more than half of the world's ethylene ... Major industrial reactions of ethylene include in order of scale: 1) polymerization, 2) oxidation, 3) halogenation and ...
... s are used in industry as an initiator for anionic polymerization, which leads to the production of ... Carbolithiation is key in anionic polymerization processes, and n-butyllithium is used as a catalyst to initiate the ... doi:10.1002/14356007.o23_o02 Baskara, D.; Muller, A.H. (2010). "Anionic Vinyl Polymerization". Controlled and living ... initiator for polymerization, and starting material for the preparation of other organometallic compounds. As nucleophiles, ...
The clog is removed by heating the needle (e.g. with a lighter) before use.[citation needed] The polymerisation is also ... will nearly stop the polymerization process and prevent aging. ...
Condensation polymerization of nucleotide analogues. Die Makromolekulare Chemie (1972), 154:255-261. ...
Polymerization of acrylonitrile to PAN,. *Cyclization during low temperature process,. *High temperature oxidative treatment of ...
PolymerizationEdit. In addition to combustion, many polymerization reactions involve radicals. As a result, many plastics, ... Recent advances in radical polymerization methods, known as living radical polymerization, include: *Reversible addition- ... Nitroxide mediated polymerization (NMP). These methods produce polymers with a much narrower distribution of molecular weights ... Radicals are important in combustion, atmospheric chemistry, polymerization, plasma chemistry, biochemistry, and many other ...
Nucleation and polymerizationEdit. Thin filament formation showing the polymerization mechanism for converting G-actin to F- ... hydrolysis actin polymerization.. *^ Zhang DS, Piazza V, Perrin BJ, Rzadzinska AK, Poczatek JC, Wang M, Prosser HM, Ervasti JM ... Under in vitro conditions Cc is 0.1 μM,[58] which means that at higher values polymerization occurs and at lower values ... A potential regulatory mechanism for actin polymerization in cells". Molecular Biology of the Cell. 3 (9): 1015-1024. doi: ...
Polymerization and oligomerizationEdit. Polymerization of epoxides gives polyethers. For example ethylene oxide polymerizes to ...
"In Chang, J. Y. (ed.). Biopolymers · PVA Hydrogels, Anionic Polymerisation Nanocomposites. Advances in Polymer Science. 153. pp ...
Yoldas, B. E. (1979). "Monolithic glass formation by chemical polymerization". Journal of Materials Science. 14: 1843. Bibcode: ...