Several physiological

Comparison of several physiological and biochemical indexes in germinating seeds of two different acid-resistant rice (Oryza sativa L.) varieties OM1490 and CR203 under the influence of the acid environment and acid environment plus KClO3 treated to seeds.

8p tamynhan9 02-12-2020 33 2   Download

This chapter list the steps involved in preparing animal tissue for microscopic viewing; list several structural and functional characteristics of epithelial tissue; name, classify, and describe the various types of epithelia, and indicate their chief function(s) and location(s).

29p tangtuy07 02-04-2016 45 3   Download

Would you be enticed by an ad for a coat that is waterproof, stretchable, washable, and permanent-press, that automatically repairs small cuts, rips, and burns? How about one that’s guaranteed to last a lifetime? Sounds too good to be true, but you already have such a coat-your skin. The skin and its derivatives (sweat and oil glands, hairs, and nails) make up a complex set of organs that serves several functions, mostly protective. Together, these organs form the integumentary system.

67p tangtuy07 02-04-2016 51 2   Download

Venoms from crotalid and viperid snakes contain several peptide inhibitors which regulate the proteolytic activities of their snake-venom metalloproteinases (SVMPs) in a reversible manner under physiological conditions. In this report, we describe the high-resolution crystal structures of a SVMP, TM-3, from Taiwan habu (Trimeresurus mucrosquamatus) cocrystallized with the endogenous inhibitors pyroGlu-Asn-Trp (pENW), pyroGlu-Gln-Trp (pEQW) or pyroGlu-Lys-Trp (pEKW).

10p system191 01-06-2013 29 5   Download

Angiotensin converting enzyme (ACE) was already discovered in insects in 1994, but its physiological role is still enigmatic. We have addressed this problem by purifying four new ACE substrates from the ovaries of the grey fleshfly, Neobellieria bullata. Their primary structures were identified as NKLKPSQWISLSD (Neb-ODAIF-11)13), NKLKPSQWI (Neb-ODAIF-11)9), SLKPSNWLTPSE (Neb-ODAIF-2) and LEQIYHL. Database analysis showed significant homology with amino acid sequence stretches as present in the N-terminal part of several fly yolk proteins....

9p research12 01-06-2013 36 3   Download

Antifreeze proteins (AFPs) are produced by several cold-water fish species. They depress physiological freezing temperatures by inhibiting growth of ice crystals and, in so doing, permit the survival of these fish in seawater cooler than their normal freezing temperatures. The type II AFP from rainbow smelt (Osmerus mordax), which is a member of the C-type lectin superfamily, was characterized in terms of its Ca2+-binding quaternary structure and the role of its single N-linked oligosaccharide....

8p research12 01-06-2013 40 4   Download

Oviparously developing embryos of the brine shrimp, Artemia franciscana, synthesize abundant quantities of a small heat shock/a-crystallin protein, termed p26. Wild-type p26 functions as a molecular chaperone in vitro and is thought to help encysted Artemia embryos survive severe physiological stress encountered during diapause and anoxia. Full-length and truncated p26 cDNA derivatives were generated by PCR amplification of p26-3-6-3, then cloned in either pET21(+) or pRSETC and expressed in Escherichia coli BL21(DE3)....

10p research12 01-06-2013 56 5   Download

The adenosine A2a receptor belongs to the seven trans-membrane helix G-protein-coupled receptor family, is abundant in striatum, vasculature and platelets and is involved in several physiological processes such as blood pressure regulation and protection of cells during anoxia. For structural and biophysical studies we have expressed the human adenosine A2areceptor (hA2aR) at high levels inserted into the Escherichia coliinner membrane, and established a puri®cation scheme.

11p research12 29-04-2013 50 4   Download

Plant lipoxygenases (LOXs) are a class of dioxygenases which display diverse functions in several physiological processes such as growth, development and response to biotic and abiotic stresses.Even though LOXs have been characterized from several plant species, the physiological role of seed LOXs is still unclear.With the aim to better clarify the occurrence of LOXs and their influence on hazelnut seed quality, we carried out the biochemical and molecular characterization of the main LOX isoforms expressed during seed development....

11p tumor12 20-04-2013 34 4   Download

To assess the expression and physiological role of the mitochondrial NAD + -independent lactate dehydrogenase (iLDH) inEuglena gracilis, cells were grown with different carbon sources, and theD-andL-iLDHactivities and several key metabolic intermediates were examined. iLDH activity was significant throughout the growth period, increasing by three- to fourfold from latency to the stationary phase. Intracellular levels ofD-andL-lactate were high (5–40 mM) fromthe start of the culture and increased (20–80 mM)when the stationaryphasewas entered....

10p fptmusic 12-04-2013 37 1   Download

NADHoxidase fromThermus thermophilusis a homodimer with anunknownphysiological function. As is typical for an enzyme isolated froma thermophile,the catalytic rate,kcat,is low at low temperatures and increases with temperature, achieving an optimum at the physiological temperature of the organism,i.e. at
70
CforT. thermophilus.Atlow temperatures,thekcatof several enzymes from thermophilic and mesophilic organisms can be increased by chaotropic agents.

11p fptmusic 12-04-2013 34 3   Download

The formation of amyloid fibrils is associated with various human medical disorders of unrelated origin. Recent research indicates that self-assembled amyloid fibrils are also involved in physiological processes in several micro-organisms. Yet, the molecular basis for the recognition and self-assembly processes mediating the formation of such structures from their soluble protein precursors is not fully understood.

8p dell39 27-03-2013 38 5   Download

In vertebrates, multiple microsomal retinol dehydrogenases are involved in reversible retinol⁄retinal interconversion, thereby controlling retinoid meta-bolism and retinoic acid availability. The physiologic functions of these enzymes are not, however, fully understood, as each vertebrate form has several, usually overlapping, biochemical roles.

14p galaxyss3 19-03-2013 31 3   Download

The endocannabinoid system is a conserved system involved in the modula-tion of several physiologic processes, from the activity of the central ner-vous system to reproduction. Type 1 cannabinoid receptor (CNR1) cDNA was cloned from the brain and testis of the anuran amphibian, the frog Rana esculenta.

12p galaxyss3 19-03-2013 35 2   Download

The mammalian brain contains unusually high levels ofd-serine, ad-amino acid previously thought to be restricted to some bacteria and insects. In the last few years, studies from several groups have demonstrated that d-serine is a physiological co-agonist of the N-methyl d-aspartate (NMDA) type of glutamate receptor – a key excitatory neurotransmitter receptor in the brain.

13p galaxyss3 07-03-2013 44 3   Download

This concise volume, edited by two of today’s leading pain clinician-scientists, represents the culmination of several forces. First and foremost is the recognition that the knowledge and skills supporting current medical management of pain have grown sufficiently large that this field has become a discipline in its own right. Accordingly, candidates who meet the requirements of the American Board of Anesthesiology may now become board-certified in Pain Management and achieve diplomate status just as their colleagues in other areas have done for years.

401p nhutretho 18-01-2013 91 9   Download

Polyubiquitin receptors execute the targeting of polyubiquitylated proteins to the 26S proteasome. In vitro studies indicate that disturbance of the physiological balance among different receptor proteins impairs the prote-asomal degradation of polyubiquitylated proteins.

12p cosis54 08-12-2012 42 3   Download

Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Critical Care cung cấp cho các bạn kiến thức về ngành y đề tài: Effects of lornoxicam on the physiology of severe sepsis...

9p thulanh17 23-10-2011 44 5   Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Application of Portsmouth modification of physiological and operative severity scoring system for enumeration of morbidity and mortality (P-POSSUM) in pancreatic surgery

6p matuot_238 13-10-2011 64 3   Download

For many years obesity in rodents has been known to be caused by a number of distinct mutations distributed through the genome. Most of these singlegene mutations cause both hyperphagia and diminished energy expenditure, suggesting a physiologic link between these two parameters of energy homeostasis. Identification of the ob gene mutation in genetically obese (ob/ob) mice represented a major breakthrough in the field. The ob/ob mouse develops severe obesity, insulin resistance, and hyperphagia, as well as efficient metabolism (e.g.

6p konheokonmummim 03-12-2010 75 4   Download