Xem 1-20 trên 849 kết quả Studying protein
  • The purpose of this work was to study protein and lipid recovery from yellowfin tuna head by enzymatic hydrolysis as well as to analyse the amino acid compositions in tuna head protein hydrolysate and the fatty acid compositions in tuna head oil.

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  • Multi-protein complexes are emerging as important entities of biological activity inside cells that serve to create func-tional diversity by contextual combination of gene products and, at the same time, organize the large number of different proteins into functional units. Many a time, when studying protein complexes rather than individual proteins, the bio-logical insight gained has been fundamental, particularly in cases in which proteins with no previous functional anno-tation couldbe placed intoa functional context derived from theirmolecular environment. ...

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  • Milk evolved as a means of providing for the postnatal needs of the developing mammalian neonate. Any perception that milk is a simple, homogeneous fluid does not adequately acknowledge the remarkable array of complex activities and functionalities of its constituent components.

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  • Nanotechnology involves research and development on materials and species at length scales between 1 and 100 nm. The term nano is derived from the Greek word meaning “dwarf.” In dimensional scaling, nano refers to 10–9, i.e., one billionth of a unit. Thus, a nanometer is 10–9 m (0.000000001 m), or about the size of a molecule such as benzene. Nanotechnology therefore, refers to the techniques and methods for studying, designing, and fabricating things at the nanometer scale.

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  • But up to now not only few but also rather inadequate empirical segmentation studies of these markets have been carri ed out and published. So, this book will present the results of a newer and better designed segmentation study of Chinese consumer goods markets. This study identifies and characterizes 12 market segments that are internally homogeneous and externally heterogeneous with regard to the product related needs and wants of their members. Moreover, it explains the possibilities of a segment specific tailoring of some other elements of the marketing mix.

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  • The Nobel Prize in Medicine 1968 for interpretation of the genetic code and its function in protein synthesis and in Chemistry 2009 for studies of the structure and function of the ribosome highlighted the ground-breaking experiment performed on May 15, 1961 by Nirenberg and Matthaei and their principal breakthrough on the creation of "cell-free protein synthesis (CFPS) system". Since then the continuous technical advances have revitalized CFPS system as a simple and powerful technology platform for industrial and high-throughput protein production....

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  • To measure mechanical stress in real time, we designed a fluorescence reso-nance energy transfer (FRET) cassette, denoted stFRET, which could be inserted into structural protein hosts. The probe was composed of a green fluorescence protein pair, Cerulean and Venus, linked with a stablea-helix.

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  • Objective of study determining diet formula for 4-breeds exotic hybrid with optimal protein level bases on balancing some essential amino acids includes: lysine, methionine and threonine in order to improve grow capacity, feed utilization efficiency and to reduce urinal and faecal nitrogen and phosphorus excretion; formulating some formulas base on the local ingredients with optimal protein and amino acids level to ensure production efficiency of exotic 4-breeds hybrid and to reduce environment pollution in pig production.

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  • An ultimate goal of modern biology is to understand how the genetic blueprint of cells (genotype) determines the structure, function, and behavior of a living organism (phenotype). At the center of this scientific endeavor is characterizing the biochemical and cellular roles of proteins, the working molecules of the machinery of life. A key to understanding of functional proteins is the knowledge of their folded structures in a cell, as the structures provide the basis for studying proteins’ functions and functional mechanisms at the molecular level....

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  • n the 1990s, a technique was developed to transfer proteins from electro-phoresis gels onto poly(vinylidene difluoride) (PVDF) membranes, digest the proteins on the membranes with proteases such as trypsin and analyze the resulting peptides on the membranes directly by mass spectrometry to identify the proteins.

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  • While many studies have focused on estimating a relationship between pollution and health, they have largely neglected to consider that pollution exposure is endogenously determined if individuals make choices to maximize their well-being. People with high preferences for clean air may choose to live in areas with better air quality. People can respond to a wide range of readily available information on pollution levels by adjusting their exposure. Failing to appropriately account for such actions can yield misleading estimates of the causal effect of pollution on health. ...

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  • Migration and remittances patterns in Nicaragua are also worth noting. Migration from Nicaragua is predominantly to Costa Rica and the United States. In a nationwide study conducted in June 2001, 42 per cent of those living in Managua reported having a relative abroad, compared to 35 per cent in the Pacific region and 29 per cent from North-Central Nicaragua. The majority of those reporting outside Managua had relatives working in Costa Rica, whereas those living in Managua had relatives primarily migrating to the United States (Orozco, 2003).

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  • The conformational conversion of prion protein (PrP) from a native con-formation to the amyloid form is a hallmark of transmissible spongiform encephalopathies. Conversion is usually monitored by fluorescent dyes, which bind generic amyloids and are less suited for living cell imaging.

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  • A novel plant protein isolated from the underground bulbs of Scadoxus multiflorus, xylanase and a-amylase inhibitor protein (XAIP), inhibits two structurally and functionally unrelated enzymes: xylanase and a-amylase. The mature protein contains 272 amino acid residues which show sequence identities of 48% to the plant chitinase hevamine and 36% to xylanase inhibitor protein-I, a double-headed inhibitor of GH10 and GH11 xylanases.

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  • Hormone-sensitive lipase (EC 3.1.1.79; HSL) is a key enzyme in the mobili-zation of fatty acids from stored triacylglycerols. HSL activity is controlled by phosphorylation of at least four serines. In rat HSL, Ser563, Ser659 and Ser660 are phosphorylated by protein kinase A (PKA)in vitro as well asin vivo, and Ser660 and Ser659 have been shown to be the activity-controlling sites in vitro.

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  • The crystal structure of aThermoactinomyces vulgariscyclo⁄maltodextrin-binding protein (TvuCMBP) complexed withc-cyclodextrin has been deter-mined. LikeEscherichia colimaltodextrin-binding protein (EcoMBP) and other bacterial sugar-binding proteins,TvuCMBP consists of two domains, an N- and a C-domain, both of which are composed of a centralb-sheet surrounded bya-helices; the domains are joined by a hinge region contain-ing three segments.

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  • Ammonium assimilation is tightly regulated in nitrogen-fixing bacteria; the target of regulation is primarily the activity of the key enzyme glutamine synthetase that is regulated by reversible covalent modification by AMP groups in reactions catalysed by the bifunctional adenylyltransferase (ATase). The properties and regulation of ATase fromEscherichia colihave been studied in great detail.

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  • Although several proteins undergo tyrosine phosphorylation at the nuclear envelope, we achieved, for the first time, the identification of tyrosine-phos-phorylation sites of a nuclear-membrane protein, emerin, by applying two mass spectrometry-based techniques.

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  • Oviparous development in the extremophile crustacean,Artemia franciscana, generates encysted embryos which enter a profound state of dormancy, termed diapause. Encystment is marked by the synthesis of p26, a polydis-perse small heat shock protein thought to protect embryos from stress.

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  • Mitochondria evolved from a bacterial endosymbiont ancestor in which the integral outer membrane proteins would have been b-barrel structured within the plane of the membrane. Initial proteomics on the outer mem-brane from yeast mitochondria suggest that while most of the protein components are integral in the membrane, most of these mitochondrial pro-teins behave as if they have a-helical transmembrane domains, rather than b-barrels.

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