Xem 1-20 trên 107 kết quả Proteins occurs
  • The collected Chapters in this volume describe the current status of poly(ethylene glycol) (PEG) modification of proteins, peptides, oligonucleotides and small molecule drugs, the recent advances in conjugation chemistry, and new clinical products. The book provides an excellent update in this rapidly evolving field, and the comprehensive collection of Chapters complements well past reviews/volumes that have documented the evolution of PEGylation. For example, a reader new to this field is encouraged to gain the historical perspective by reading the following reviews [1–8].

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  • Chapter 17 (part 2) - Protein turnover and amino acid catabolism. In this chapter you will: Know the essential and non-essential amino acids, know how dietary proteins are degraded to amino acids, know in which tissue type different processes occur, know that cellular proteins have different half lives. Know how this relates to there function,...

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  • Originally the term ‘protein module’ was coined to distinguish mobile domains that frequently occur as building blocks of diverse multidomain proteins from ‘static’ domains that usually exist only as stand-alone units of single-domain proteins. Despite the widespread use of the term ‘mobile domain’, the distinction between static and mobile domains is rather vague as it is not easy to quantify the mobility of domains.

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  • It was shown previously [Riedinger, H. J., van Betteraey-Nikoleit, M & Probst, H. (2002)Eur. J. Biochem.269, 2383–2393] that initiation ofin vivo SV40 DNA replication is reversibly suppressed by hypoxia in a state where viral minichromosomes exhibit a nearly complete set of repli-cation proteins. Reoxygenation triggers fast completion and post-translational modifications.

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  • Bacterial biofilms are regarded to be the primary aetiological factor in the initiation of gingival inflammation and subsequent destruction of periodontal tissues (Offenbacher 1996) and three major specific pathogens have been repeatedly identified as etiologic agents, namely Aggregatibacter (Actinobacillus) actinomycetemcomitans (Aa), Porphyromonas gingivalis (Pg) and Tannerella forsythia (Tf) (Socransky et al. 1998).

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  • Fenton's Reagent requires soluble Fe2+ to form OH•. This optimal reaction occurs under relatively low pH conditions (e.g., pH of 2 to 4). pH adjustment in the treatment area is often necessary to enable the oxidation process to proceed efficiently. This can be accomplished by either acidifying the hydrogen peroxide or by adding a chelating acid. Using a ferrous sulfate solution `simultaneously adjusts aquifer pH and adds the iron catalyst needed for Fenton's Reagent.

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  • However, in 2009, about 15% of world corn production is converted into ethanol fuel. More subtle example occurs when a inedible biomass as energy source, but its production still compete with food supply chain. Recent world food price increases, especially in 2008 has been blamed a classification of food crops towards biofuels production.

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  • Different PHI functions give rise to specific policy challenges. Primary PHI markets often create access-related challenges, especially for high-risk and vulnerable groups, where they represent the sole form of cover for some population groups.15 Where public and private delivery systems are linked to different funding sources, as in systems with duplicate private health insurance, differences in access to care, choice levels and utilisation patterns occur between individuals with and without private insurance.

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  • They found that AAV5 and 7-syn-GFP resulted in the highest percentage of nigral dopaminergic neurons transduction, where AAV7 showed the highest efficiency in transducing the nigrostriatal projection pathway. Accordingly, they conclude that AAV7-syn-GFP is the most suitable SN gene delivery vehicle in mice. In the eleventh chapter, Okada et al. developed a new method of producing AAV vectors. They applied these AAV vectors in muscle transduction for the treatment of Duchenne muscular dystrophy (DMD). In chapter twelve, Sunico et al.

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  • Electrophoresis is defined as the transport of electrically charged particles in a direct current electric field. Electrophoretic separation is based on differential rates of migration in the bulk of the liquid phase and is not concerned with reactions occurring at the electrodes. In the early days, electrophoresis was carried out either in free solution or in the supporting media such as paper, cellulose acetate, starch, agarose, and polyacry lamide gel.

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  • According to the International Labour Organization (ILO, 2005), each year an estimated 2.2 million men and women die from work-related injuries and diseases. Moreover, annually, an estimated 160 million new cases of non-fatal work-related diseases occur worldwide. These include cancer, respiratory and cardiovascular diseases, infectious diseases, musculoskeletal and reproductive disorders, and mental and neurological illnesses (Takala, 2002).

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  • The first function, sperm cell formation, occurs in the two testes. The formation of sperm requires a temperature that is a few degrees cooler than the temperature of the rest of the body. How is this temperature reduction produced? The testes are suspended within a sac called the scrotum. Because it is not located within the body cavity, the temperature of the scrotum is a few degrees lower than normal body temperature. The scrotum is an adaptation that has evolved to increase the chances of pro- ducing healthy sperm. Inside the testes are a great many tiny tubes, or tubules.

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  • This paper addresses the innovation dynamics induced by environmental policy in the pulp and paper industry. There has been a fair amount on technical change in the pulp and paper industry in the recent past and there are still plenty of options for improve- ment. Innovation and diffusion of new technologies have occurred with respect to end- of-pipe abatement, on processes and the product (paper) itself. The main drivers for in- novation in the pulp and paper industry are competition and market demands, but envi- ronmental policies have also played a role.

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  • Masaki Okumura1,2, Masatoshi Saiki2,3, Hiroshi Yamaguchi1 and Yuji Hidaka2 1 School of Science and Technology, Kwansei Gakuin University, Hyogo, Japan 2 Graduate School of Science and Engineering, Kinki University, Osaka, Japan 3 Department of Applied Chemistry, Faculty of Engineering, Tokyo University of Science, Yamaguchi, Japan Keywords arginine; disulfide; folding; glutathione; uroguanylin Correspondence Y.

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  • In response to the need for an all encompassing treatment device to deal with trash, debris (organic and non organic) solids, sediment, total suspended solids (“TSS”), metals (dissolved/particulate), nutrients (dissolved/particulate), oils, hydrocarbons, polycyclic aromatic hydrocarbons (“PAH”), and pathogenic bacterium contaminants, the City of Oceanside authorized the installation of the Modular Wetlands Device in April of 2008.

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  • A material weakness is a condition in which the design or operation of one or more internal control components does not reduce to a relatively low level the risk that noncompliance with applicable requirements of laws, regulations, contracts, and grants that would be material in relation to a major federal program being audited may occur and not be detected within a timely period by employees in the normal course of performing their assigned functions.

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  • A decisive step in the biosynthesis of many eukaryotic proteins is their par-tial or complete translocation across the endoplasmic reticulum membrane. A similar process occurs in prokaryotes, except that proteins are trans-ported across or are integrated into the plasma membrane.

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  • We cloned a new cysteine proteinase of wheat seed origin, which hydro-lyzed the storage protein gliadin almost specifically, and was named glia-dain. Gliadain mRNA was expressed 1 day after the start of seed imbibition, and showed a gradual increase thereafter.

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  • Membranes serve a number of essential cellular functions. They constitute the boundaries of cells and intracellular organelles, and they provide a surface where many important biological reactions and processes occur. Membranes have proteins that mediate and regulate the transport of metabolites, macromolecules, and ions.

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  • A small part of the absorbed light energy in the photosynthesis process is lost during the migration from the pigment antenna to the reaction centers and are dissipated by a number of non-photochemical processes, including heat, and re-emission of a small but easily detectable amount (2-5% in vivo) of the absorbed radiation. This re-emission occurs at longer wavelengths in the red and far-red spectral regions and is termed as Chlorophyll Fluorescence (ChlF) (Shreiber, 1983; Backer & Bradbury, 1981)....

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