isolation and culturing of human hepatocytes

Báo cáo y học: "Isolation and characterization of human cells resistant to retrovirus infection" pdf

Ngày tải lên : 13/08/2014, 05:22

... mutant cells and extent of HIV Growth Growth rates of parental and mutant cells and extent of HIV integration (A) Growth rates Parental and mutant 30-2 and 42-7 cells were seeded and growth measured ... affected all alleles of diploid test loci HPRT and APRT in a significant portion of the cell population (1 in 106) and validated the efficacy of our mutagenesis protocol Isolation of cell clones resistant ... X-chromosome and APRT human chromosome 16) are diploid and possibly polyploid in HeLa cells [14] Table shows the kinetics of the appearance of 6-TG and DAP resistant colonies after rounds of mutagenesis...

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Báo cáo khoa học: Isolation and characterization of an IgNAR variable domain speciﬁc for the human mitochondrial translocase receptor Tom70 potx

Ngày tải lên : 17/03/2014, 10:20

... respectively, and the resultant VNARs evaluated for retention of binding afﬁnity Material and methods Equipment and reagents Restriction enzymes and Vent DNA polymerase were purchased from New England ... possibility of inter- and intra CDR disulphide cross-links These strategies are summarized in Fig 1B and Table 1, and details of the library construction are given in greater detail in the Materials and ... possibility of disulphide bond formation genetically by replacement of residues Cys22 and Cys82 with alanine and valine, respectively, to give a cysteine minus mutant (12F-11DCys) Use of alanine and...

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Isolation and characterization of the novel human gene, MOST 1

Ngày tải lên : 16/09/2015, 17:13

... supervisor, A/Prof Vincent Chow for this opportunity to pursue research and his constant encouragement A/Prof Bay Boon Huat and Prof Edward Tock for providing and help in grading the biopsies and their ... cancers and prostate cancers, and is also the candidate site of potential oncogene(s) other than c-myc located at 8q24.1 Analysis of paired biopsies of invasive ductal breast cancer and adjacent ... study of isolation and characterization of a novel human gene was initiated The objectives of this study were as follow: To isolated full length cDNA; To analyze the genomic structure of MOST-1;...

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Isolation and characterization of an extracellular polymer closely related to flocculation of activated sludge

Ngày tải lên : 05/09/2013, 09:08

... polysaccharide One milligram of the partially purified polymer contained 309.7 µg of protein, 160.2 µg of neutral sugar, 58.5 µg of hexosamine, 30.8 µg of uronic acid and 3.8 µg of phosphorus Constituent ... concentration of ppm to estimate the effect of pH After min, A660 was measured and the extent of flocculation was calculated Pronase digestion of extracellular polymer Forty milligrams of the extracellular ... as follows: 500 g of soil was washed times with distilled water and suspended in 1,000 ml of water The mixture was allowed to stand for 10min and the supernatant was collected and used for the...

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Tài liệu Báo cáo khoa học: Isolation and characterization of four type 2 ribosome inactivating pulchellin isoforms from Abrus pulchellus seeds docx

Ngày tải lên : 18/02/2014, 16:20

... for cDNA single strand synthesis, 600 ng of RNA, 0.5 lg of oligo(dT) primer and 10 mm of dNTPs were incubated for at 65 °C Subsequently, lL of the ﬁrst strand buffer X and lL of dithiothreitol ... mixture of other isoforms (B) Gel visualization of proteins eluted Lane 1, molecular weight markers Numbers on the left indicate the Mr values of the standards in thousands Lanes 2–9, lg of peak ... P III ⁄ P IV and a mixture of other isoforms (*), respectively, in the presence (lanes 2–5) or absence (lanes 6–9) of 2-mercaptoethanol (C) Elution proﬁle of P III and P IV Chromatofocusing chromatography...

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Tài liệu Báo cáo khoa học: Phenol hydroxylase from Acinetobacter radioresistens S13 Isolation and characterization of the regulatory component docx

Ngày tải lên : 21/02/2014, 00:20

... of 50 nmÆmin)1, band-width of 1.0 nm, and a resolution of 0.1 nm in the temperature range between 10 °C and 70 °C, after preincubation for 10 at each temperature Three runs were accumulated and ... of 0.6 lM The data were fitted to Michaelis–Menten curves Squares and dotted line: data and fitting with PHI/PHO ratio of 0.5 Triangles and continuous line: data and fitting with PHI/PHO ratio of ... Asterisks and broken line: data and fitting with PHI/PHO ratio of hypothesis and therefore a direct involvement of PHI in electron transfer This conclusion is consistent with the very low degree of identity...

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Tài liệu Báo cáo khoa học: The isolation and characterization of cytochrome c nitrite reductase subunits (NrfA and NrfH) from Desulfovibrio desulfuricans ATCC 27774 Re-evaluation of the spectroscopic data and redox properties ppt

Ngày tải lên : 21/02/2014, 00:20

... intense band of 61 kDa (NrfA) and a band of weak intensity of 19 kDa (NrfH), conﬁrming its hetero-oligomeric nature (Fig 1, lane 1) However, in the absence of boiling (Fig 1A, lanes and 4) high ... and 4) high molecular mass bands of approximately 110 kDa and > 200 kDa were visible, as well as a faint band at 37 kDa, suggesting the presence of dimers All of the bands stained positively for ... between NrfH and NrfA is discussed The reassessment of previous spectroscopic studies was undertaken, particularly regarding the assignment of spectroscopic and redox potentials of the NrfA hemes...

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Báo cáo khoa học: Mechanisms and kinetics of human arylamine N-acetyltransferase 1 inhibition by disulﬁram potx

Ngày tải lên : 07/03/2014, 02:20

... [27,28] The identiﬁcation and characterization of the molecular targets of DS are of prime importance in order to understand the pharmacological and ⁄ or toxicological effects of this therapeutic compound ... reaction of cisplatin with the enzyme, thus supporting the suggestion that NAT1 could be an in vivo target of DS The human NAT2 isoform shares a similar structure and mechanism of action to human ... concentrations of DS in vitro and in human cancer cells Mechanistic and kinetic analyses indicate that DS reacts with the active site cysteine residue of NAT1, leading to the irreversible inhibition of the...

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Báo cáo khoa học: Folding and turnover of human iron regulatory protein 1 depend on its subcellular localization pdf

Ngày tải lên : 07/03/2014, 10:20

... particular property of human IRP1 The active participation of mitochondrial KGD1p is borne out by the lack of aggregates in a KGD1 mutant (Fig 6) and implies that association of IRP1 and KGD1p eludes ... consequence of the presence of unfolded or incorrectly folded human IRP1 This implies that formation of inclusion bodies competes with assembly of the [4Fe)4S] cluster in IRP1 In addition, degradation of ... coding sequence of human IRP1 as a way of translocating the protein to yeast mitochondria The aconitase activity of all proteins addressed to mitochondria was probed by complementation of the glutamate...

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Báo cáo khoa học: Engineering and characterization of human manganese superoxide dismutase mutants with high activity and low product inhibition potx

Ngày tải lên : 07/03/2014, 11:20

... backbone amide and carbonyl of Cys140 form hydrogen bonds with the backbone carbonyl and amide of Trp123, the side chain of which forms one wall of the active site cavity and the replacement of which ... due to a loss of the interaction between the side chains of Asn73 and Gln143 The X-ray crystal structure of hMnSOD shows that the side chain amide ˚ of Asn73 is near to (3.1 A) and possibly hydrogen ... the uncatalyzed dismutation of superoxide [32] A least-square ﬁt of Eqn (1) to the data of Fig yields the constants given in the legend of Fig The values of kcat ⁄ Km and kcat for catalysis by...

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Báo cáo khoa học: Cloning, expression and interaction of human T-cell receptors with the bacterial superantigen SSA ppt

Ngày tải lên : 07/03/2014, 16:20

... clonal expansion of T-cells bearing human Vb3, Vb12, Vb17 and Vb19 [20] Others showed proliferation of human T-cells bearing Vb1, Vb2, Vb3, Vb5.2, Vb12, Vb15 and Vb17 domains and found differences ... Immobilization of the SAgs instead of TCRs yielded a higher binding constant of the former, which was similar for both complexes, wtSSA–Vb5.2 and SSA(C26S)– Vb5.2 Different concentrations of human Vb2.1 and ... hVb2.1hCb2 and hVb1hCb2 (genes kindly provided by U Utz and R P Sekaly, University of Montreal, Canada), were cloned between the NdeI and EcoRI restriction sites of the pET17b expression vector and...

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Báo cáo khoa học: pH dependence, substrate speciﬁcity and inhibition of human kynurenine aminotransferase I ppt

Ngày tải lên : 07/03/2014, 16:20

... picture of the enzyme and should be helpful in a comprehensive understanding of the role of hKAT-I, especially in KYNA biosynthesis in the human brain Experimental procedures Enzyme expression and ... Department of Animal Health and Biomedical Sciences, University of Wisconsin (Madison, WI, USA) and Dr Menico Rizzi (Department of Genetics, University of Pavia, Italy) for their critical reading of ... protein standard (lane 3), respectively (B) Spectral changes of hKAT-I following the addition of 10 mM glutamine into hKAT-I solution The concomitant decrease of the 422 nm peak and increase of the...

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Preparative isolation and purification of six volatile compounds from essential oil of Curcuma wenyujin using high-performance centrifugal partition chromatography doc

Ngày tải lên : 07/03/2014, 21:20

... total of mg of curdione (1), mg of curcumol (2), 10 mg of germacrone (3), 18 mg of curzerene (4), mg of 1,8-cineole (5) and 17 mg of b-elemene (6) from the essential oil (300 mg) in 2.4 mL of the ... the differences between K2 and K3, and between K4 and K5 in solvent systems (petroleum ether/acetonitrile/acetone 2:1:1 and 4:3:1 v/v/v) are 0.34 and 0.24, and 0.20 and 0.20, respectively, which ... Both of the upper and the lower phases were degassed for 30 by ultrasonication before use Aliquots of 300 mg of the essential oil were diluted by 2.4 mL of the mixed solution of lower phase and...

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Báo cáo Y học: Isolation and characterization of a thioredoxin-dependent peroxidase from Chlamydomonas reinhardtii doc

Ngày tải lên : 08/03/2014, 16:20

... BLAST of peptide sequences of 21 kDa proteins in databases Tryptic peptides were puri®ed by RP-HPLC and some of them were totally or partially analyzed by Edman sequencing (ááá) and/ or by MALDI-TOF ... BAS1 protein of Brassica, spinach, barley and A thaliana, PR1 of Phaseolus and MHF of A thaliana These proteins belong to the 2Cys-Prx subfamily All plant 2Cys-Prx proteins, except BAS1 of barley, ... previously [21] Chloroplastic thioredoxins m and f from spinach were a kind gift of P Schurmann (University È of Neuchatel, Switzerland) Thioredoxins m and h from Ã Chlamydomonas were puri®ed as...

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Nervous system and sensory organs color atlas and textbook of human anatomy potx

Ngày tải lên : 15/03/2014, 19:20

... plan of the CNS can be recognized in the spinal cord and brain stem, knowledge of which will aid in understanding the organization of various parts of the brain The derivatives of basal and alar ... pekinensis Neanderthal Cro-Magnon B Endocranial casts of a gorilla and of fossil hominids C Endocranial casts of Homo sapiens, lateral view and basal view Kahle, Color Atlas of Human Anatomy, ... morphological evolution of the human brain by means of casts made of fossil cranial cavities (B, C) The positive cast of the cranial cavity (endocranial cast) is a rough replica of the shape of the brain...

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Báo cáo khoa học: Isolation and characterization of a D-cysteine desulfhydrase protein from Arabidopsis thaliana pptx

Ngày tải lên : 16/03/2014, 18:20

... presequence of 19 amino acids The mature protein would have a molecular mass of 41.7 kDa and a pI of 6.34 The YedO protein from E coli and the d-CDes from Arabidopsis showed an overall identity of 36% and ... d-CDes mRNA and protein levels in older plants, during the light phase in a diurnal light ⁄ dark rhythm and under sulfate limitation Results In silico characterization and isolation of the Arabidopsis ... protein has a predicted molecular mass of 43.9 kDa and a pI of 7.2 It contains relatively high amounts of the sulfur amino acids cysteine (four residues) and methionine (10 residues) According...

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Báo cáo khoa học: Targeting mechanism of the retinoblastoma tumor suppressor by a prototypical viral oncoprotein Structural modularity, intrinsic disorder and phosphorylation of human papillomavirus E7 doc

Ngày tải lên : 22/03/2014, 21:20

... type, and on the developmental and cell cycle stages [7] The Rb protein has a molecular mass of 105 kDa and is composed of three domains Both the N-terminal and the AB (RbAB) domains consist of ... interaction between E7 and the Rb protein is required for the induction and maintenance of the transformed state of human keratinocytes [20] Deregulation of E7 expression upon integration of the HPV genome ... between the A and B subdomains on the opposite side of RbAB [16,18] (Fig 1C,D) Early evidence for the tumor suppressor role of the Rb protein came from the mechanism of action of the human papillomavirus...

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Manhood Of Humanity The Science and Art of Human Engineering potx

Ngày tải lên : 22/03/2014, 23:20

... the first of the sciences and the mother of safety.” BRANDEIS It is the aim of this little book to point the way to a new science and art—the science and art of Human Engineering By Human Engineering ... propensities and powers that make human beings human and not animal When and only when this fact is clearly seen and [pg 063]keenly realized, there will begin the science of man—the science and art of human ... jurisprudence and economics, a governance—a science and art of human life and society—based upon the laws of human nature because based upon the just conception of humanity as the time-binding class of...

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Báo cáo khoa học:The isolation and characterization of temperature-dependent ricin A chain molecules in Saccharomyces cerevisiae docx

Ngày tải lên : 23/03/2014, 07:20

... site molecules Y80, Y123 and E177 are shown in green and the position of the two mutated amino acids, F108 and L151, are shown in blue between the aromatic rings of Tyr80 and Tyr123 close to the ... diagram of wild-type RTA structure, and the positions of the altered amino acids of the double mutant, F108 and L151, within the structure are indicated Discussion RTA is the catalytic polypeptide of ... Utilisation of the budding yeast Saccharomyces cerevisiae for the generation and isolation of non-lethal ricin A chain variants Yeast 22, 1287–1297 16 Gemmill TR & Trimble RB (1999) Overview of N- and...

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Báo cáo khoa học: Effect of mutations in the b5–b7 loop on the structure and properties of human small heat shock protein HSP22 (HspB8, H11) pptx

Ngày tải lên : 23/03/2014, 07:20

... HSP22) and R108 (equivalent to K141 of human HSP22) are shown in purple and grey, respectively (B) Alignment of human HSP22 with human aB-crystallin and HSP27 and M jannaschii Hsp16.5 and T aestivum ... N- and C-terminal domains are indicated by N and C correspondingly All b-strands are numbered and the b5 and b7 strands are shown in red and blue, respectively G104 (equivalent to K137 of human ... the effect of a mutation in this part of the molecule on the structure and properties of human sHsp Oligomeric structure of HSP22 and its mutants All samples of recombinant HSP22 and its mutants...

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