... belong to one of 3 classes:12,13 gatekeepers, caretakers and landscapers Gatekeepers consist of oncogenes and tumor-supressor genes and they control the growth and differentiation pathways of the cell ... appointed the head of the Division of Cancer Treatment in the United States He had a strong interest in natural products and spearheaded a program for the collection and testing of plants and marine ... beginning of the targeted-therapy era One of the most significant Trang 2612 landmarks of this period was the development of imatinib Unlike paclitaxel and irinotecan which were derived from natural...
Ngày tải lên: 10/09/2015, 15:49
... hydrolysis of cellulose by respective enzymes (modified from [96]) Enzymatic saccharification of cellulose takes place at optimum temperature of 45-50ºC and pH of 5.0 Cellulase loading range of 10-15 ... economic, and energetic costs and benefits of biodiesel and ethanol biofuels PNAS 2006, 103(30), 11206-11210 [6] Taherzadeh M.J., Kamiri K Pretreatment of lignocellulosic wastes to improve ethanol and ... saccharification and fermentation of wheat straw to ethanol Journal of Biobased Materials and Bioenergy 2008, 2(3), 210-217 [68] Saha B.C., Cotta M.A Enzymatic hydrolysis and fermentation of lime pretreated...
Ngày tải lên: 05/09/2013, 15:28
Tài liệu Báo cáo khoa học: Bioinformatic and enzymatic characterization of the MAPEG superfamily doc
... FLAP and LTC4 synthase), suggest-ing that the origin of these forms dates back to before the occurrence of vertebrates, i.e more than 500 mya This dates the differentiation of the MAPEG forms ... capacity of fish xenobiotic metabolism [28] and raises the possibility of arachi-donic acid based signalling Zebrafish express both cyclooxygenase (cox)-1 and -2 and the primary prostaglandin end ... be part of their chemical defence Recently, two coral (Gersemia fruticosa) cyclooxygen-ases were cloned and functionally characterized, and found to catalyze the formation of PGF2a, PGE2 and PGD2...
Ngày tải lên: 19/02/2014, 17:20
Báo cáo khoa học: Crystal structure and enzymatic properties of a bacterial family 19 chitinase reveal differences from plant enzymes pdf
... egg-white lysozyme This hypothesis is not confirmed by the present analysis of enzymatic properties of ChiG, or by our analysis of the ChiG and ChiC structures Despite the deletion of the B-loop, ... catalyze the hydrolysis of chitin, a carbohydrate polymer of 1,4-b-linked GlcNAc Chitin is found in the cuticle of insect shells, in shells of crustaceans, and in the cell walls of many fungi, making ... violet) and a small, presumably amorphous, subfraction of a-chitin and b-chitin, but was not capable of degrading crystalline chitin completely The crystal structures of chitinase G and a related...
Ngày tải lên: 07/03/2014, 11:20
Báo cáo khoa học: Substrate specificity and excision kinetics of natural polymorphic variants and phosphomimetic mutants of human 8-oxoguanine-DNA glycosylase pot
... cellular distribution and enzymatic activity of OGG1 Mutations and polymorphisms of OGG1 may affect the enzymatic activity and have been associated with increased risk of several cancers In this ... Institute of Standards and Technology, Gaithersburg, MD, USA 4 Department of Clinical Biochemistry, Collegium Medicum, Nicolaus Copernicus University, Bydgoszcz, Poland 5 Department of Natural ... the bulk and charge of phosphoserine [40] In this article, we analyze the activity, substrate specificity and kinetics of two naturally occurring poly-morphic variants of OGG1, OGG1-A288V and OGG1-D322N,...
Ngày tải lên: 23/03/2014, 05:22
Báo cáo khóa học: Overexpression and enzymatic characterization of Neisseria gonorrhoeae penicillin-binding protein 4 ppt
... constants,where EC0and ECUrepresent the amount of acyl-enzyme complex formed in the absence and presence of the unlabeled antibiotic,respectively,and CU and CLare the concentrations of the unlabeled and labeled ... range of 4.2–7.5 and the male urethra having a pH of 6.2–8.4 The pH dependence of NG PBP 4 (pKavalues of 6.9 and 10.1) therefore overlaps the alkaline side of the physiological growth range of N ... 6.9 and 10.1 Comparison of the enzymatic properties of NG PBP 4 with otherDD-carboxypeptidases highlights both similarities and differences within these enzymes,and suggests the possibility of...
Ngày tải lên: 23/03/2014, 12:20
Báo cáo khoa học: X-ray crystallographic and enzymatic analyses of shikimate dehydrogenase from Staphylococcus epidermidis pot
... (2D5C, 2GPT and 2O7Q) and (c) inactive (2HK9_A and 2EV9) and active (2HK9_D and 2O7S) ternary complexes Analysis of these different conformations reveals the binding information of substrate and co-factor, ... both in its ligand-free form and in complex with shikimate SeSDH has a kcat of 22.8 s)1 and a Km of 73 lm towards shikimate, and a Kmof 100 lm towards NADP The overall folding of SeSDH comprises ... underlying the cofactor specificity of AroE and YdiB [9], and the putative catalytic mechanism of SDH [12] Notably, the rela-tive positions of the two domains responsible for substrate and cofactor binding,...
Ngày tải lên: 30/03/2014, 02:20
alexandersson - living water - viktor schauberger and the secrets of natural energy (1990)
... was a great friend of Nature and a man with original, grandiose and often revolutionary ideas Many have been moved by his ideas about Nature and his philosophies of life, and would agree with ... rays is tired and lazy and therefore curls up and sleeps At night, however, and especially in moonlight, the water becomes fresh and lively and is able to support the logs of beech and silver fir, ... however, seen right into the depths of the workings of Nature, and his theories are based on his own understanding of Nature's life and functions He was, of course, an outsider, an individualist;...
Ngày tải lên: 04/06/2014, 12:43
implosion - viktor schauberger and the path of natural energy
... SCHAUBERGER and the PATH of NATURAL ENERGY Compiled by Riley Hansard Crabb & Thomas Maxwell Thompson 1985 Revised Edition of Implosion Instead of ExplosionTABLE OF CONTENTS Viktor Schauberger and ... Brands tatter 1Implosion At First Hand, from The 1977 July-Aug Journal of Borderland Research By Riley Crabb .34Viktor Schauberger and His Work, from The 1979 May-June Journal of Borderland ... specific phenomena and represents one of the two components of the force which animates and activates the whole universe The secret of the normal and good life con- sists of achieving the proper...
Ngày tải lên: 04/06/2014, 12:43
báo cáo hóa học:" Protective versus pathogenic anti-CD4 immunity: insights from the study of natural resistance to HIV infection" potx
... progression of HIV infection and, in the absence of antiviral treatment, the main contributor to the development of opportunistic infections and ultimately to the death of the majority of infected ... study of natural resistance to HIV infection Samuele E Burastero*1, Mariangela Figini2, Barbara Frigerio, Paolo Lusso3, Luca Mollica4 and Lucia Lopalco5 Address: 1 Unit of Clinical and Molecular ... activation of many key components of the immune system even in the very early stages and this is likely a fundamental mechanism for the ultimate collapse of immunity [1] On the other hand, the natural...
Ngày tải lên: 18/06/2014, 15:20
Báo cáo toán học: "Stapled Sequences and Stapling Coverings of Natural Numbers" doc
... sequence is a set of consecutive positive integers such that no one of them is relatively prime with all of the others The problem of existence and construction of stapled sequences of length N was ... Lemmata 3.1 and 3.2 show that the existence of a stapling covering of the sequence [1, N ] = (1, 2, , N ) is the necessary and sufficient condition for the existence of a stapled sequence of length ... for all N ≥ 2098 and the above algorithm works for all N ≥ 1618. Corollary 4.3 Stapled sequences of natural numbers exist for all N ≥ 17 Proof Follows from the results of Sec 3 and Theorem 4.2....
Ngày tải lên: 07/08/2014, 06:20
Báo cáo vật lý: "Effect of Blowing Agent Concentration on Cell Morphology and Impact Properties of Natural Rubber Foam" ppt
... Effect of Blowing Agent Concentration on Cell Morphology and Impact Properties of Natural Rubber Foam N.N Najib1*, Z.M Ariff1, N.A Manan1, A.A Bakar1 and C.S Sipaut2 1 School of Material and Mineral ... effect on the morphology and impact properties of natural rubber foam The expandable rubber samples were prepared using a conventional two-roll mill and were then expanded via a heat transfer ... absorbed energy of the foam increases with decreasing crosslink density and relative foam density, which is associated with the formation of smaller foam cells and an increase in the number of cells...
Ngày tải lên: 07/08/2014, 14:20
Báo cáo y học: "Biophysical and enzymatic properties of the simian and prototype foamy virus reverse transcriptases" pptx
... kinetics of PFV PR-RT with those of HIV-1 and Figure 1 Biophysical properties of PFV and SFVmac PR-RT (A) Far UV circular dichroism (CD) spectra of wild-type SFVmac (continuous line) and PFV PR-RT ... 20°C using a band width of 1 nm, a sensitivity of 100 mdeg and a data density of 5 points/nm in a 0.1 cm cell with 0.5 μM of each enzyme in 25 mM Na 2 HPO 4 /NaH 2 PO 4 pH 7.4, and 5 mM NaCl ... the determination of kinetic parameters on a heteropolymeric substrate 100 nM of single stranded M13mp18 DNA and 15 nM of PR-RT was used dNTP concentrations of 25, 50, 75, 125 and 250μM were added,...
Ngày tải lên: 12/08/2014, 23:22
Studying on the actual status of the vegetation cover and the process of natural forest recovery in Vi Xuyen district, Ha Giang province (Nghiên cứu hiện trạng thảm thực vật và quá trình phục hồi rừng tự nhiên ở huyện Vị Xuyên, tỉnh Hà Giang)
... 102.072,06 ha and accounts for about 86% of forest land area and accounts for 68% of total natural land area; area without forest land proportion is less than that of total area of forest land (about ... planning review of forest types in Vi Xuyen district, 2012) The area of forest land of Vi Xuyen district is about 118,691.36 ha and accounts for 79.2% of natural land area Of which, forest land is 102.072,06 ... survey routes and in standard plots (SP) * Soil sampling: Digging soil profile, taken land for the analysis of physical and chemical properties and microorganisms and sampling of soil animals...
Ngày tải lên: 19/09/2014, 09:45
microbiology experiments a health science perspective
... know the location of fire extinguishers, eyewash apparatus, and other safety equipment 14 Wash your hands with soap and water after any possible contamination and at the end of the laboratory ... know the location of fire extinguishers, eyewash apparatus, and other safety equipment 14 Wash your hands with soap and water after any possible contamination and at the end of the laboratory ... growth of all microorganisms The trypticase soy agar used in this exercise is a rich medium (a digest of meat and soy products, similar to a beef and vegetable broth) and will support the growth of...
Ngày tải lên: 11/04/2014, 09:51
Uncommon Sense: Out of the Box Thinking for An In the Box World
... is often a lack of imagination that limits the impact and effect of the information technology revolution He properly recognizes that wireless communications and access will be omnipresent, and ... age and still remember with some affection the magic of Rupert Bear, and excitement of Dan Dare, Superman, Batman and more The education process was relentless, and soon I was lost in a world of ... mathematics and science was almost entirely down to the limited artistry and lack of clarity and thinking of my early teachers I systematically failed one class after another and gained almost nothing of...
Ngày tải lên: 15/03/2014, 16:07
Báo cáo hóa học: " Stochastic Feature Transformation with Divergence-Based Out-of-Handset Rejection for Robust Speaker Verification" pot
... cb3 and row cb4 are large Therefore, in the first part of the experiment, we use handsets cb3 and cb4 as the unseen handsets, and the other eight handsets as the seen handsets Seen and unseen handsets ... (1) unseen handsets with characteristics different from those of the seen handsets, and (2) unseen handsets whose characteristics similar to those of the seen handsets Seen and unseen handsets with ... likely handset and transforms the distorted vectors according to the transformation parameters of the identified handset Otherwise, the selector identifies the handset as an unseen handset and processes...
Ngày tải lên: 23/06/2014, 01:20
báo cáo khoa học:" Validation of the "World Health Organization Disability Assessment Schedule, WHODAS-2" in patients with chronic diseases" ppt
... loadings of each item was above 0.5 in 75% of the cases Results of CFA presented acceptable goodness of fit indexes: CFI and TLI above the standard 0.95 (0.975 and 0.973), and RMSEA (0.127); and supported ... severity scales, and with standardised instruments measuring disability and quality of life Sample Patients had to be over 18 years old and meet the diagnosis criteria of one of the following ... conceptualized and oversaw analyses, and wrote the article JA and GV contributed and revised statistical analyses and contributed to the interpretation of data SC contributed to the conception, design and...
Ngày tải lên: 12/08/2014, 01:21
Báo cáo y học: " Aberrant splicing of the hRasGRP4 transcript and decreased levels of this signaling protein in the peripheral blood mononuclear cells in a subset of patients with rheumatoid arthritis" pdf
... acquisition of the data and draft of the manuscript HT helped collection and acquisition of the data and draft of the manuscript TA and TK was involved in the interpretation and design of the study, and ... and performed experiments and performed statistical analyses SY designed the study, performed experiments and drafted the manuscript HK designed and performed experiments, helped collection and ... isoforms of hRasGRP4 have been designated as splice variants to [1] Two of the alternative splicing isoforms identified in our RA patients correspond to variants and However, the other 10 isoforms...
Ngày tải lên: 12/08/2014, 18:20
Báo cáo y học: " Endothelial Postresuscitation care with mild therapeutic hypothermia and coronary intervention after out-of-hospital cardiopulmonary resuscitation: a prospective registry analysi" pot
... bystanders in 324 patients (55%), and CPR was performed by bystanders in 102 patients (17%) The main cause of OHCA was presumably of cardiac origin in 466 patients (80%) Table shows the number of ... Society of Cardiologists and Internal Medicine The registry was also accepted and recommended both by the German Resuscitation Council and the German Society of Emergency Physicians, and in addition ... combination of hypothermia and coronary intervention Seventy-three patients received both MTH and PCI, irrespective of first ECG findings Ninety-six per cent of these patients survived 24 hours and 49%...
Ngày tải lên: 14/08/2014, 07:21