Xem 1-20 trên 38 kết quả Protein electrophoresis
  • 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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  • Biomedical research has entered a new era of characterizing a disease or a protein on a global scale. In the post-genomic era, Proteomics now plays an increasingly important role in dissecting molecular functions of proteins and discovering biomarkers in human diseases. Mass spectrometry, two-dimensional gel electrophoresis, and high-density antibody and protein arrays are some of the most commonly used methods in the Proteomics field.

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  • 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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  • In this study there were several important issues investigated namely, the process of dynamic coating of capillary surface with amines, denaturation of protein by urea, pH and composition of background electrolyte solution. In addition, instrumental parameters eg. voltage, capillary temperature, detection wavelength were also optimized.

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  • LIF (laser-induced fluorescence) is a very popular CE detector – These have ~0.01 attomole sensitivity for fluorescent molecules (e.g. derivatized proteins). Direct absorbance (UV-Vis) can be used for organics. For inorganics, indirect absorbance methods are used instead, where a absorptive buffer (e.g. chromate) is displaced by analyte ions – Detection limits are in the 50-500 ppb range. Alternative methods involving potentiometric and conductometric detection are also used – Potentiometric detection: a broad-spectrum ISE – Conductometric detection: like IC...

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  • The endoplasmic reticulum (ER) and the Golgi apparatus both maintain their specific morphology, composition, and function in spite of the exchange of proteins and lipids between the two organelles through membrane trafficking. The morphology of the Golgi apparatus is closely linked to the balance between anterograde (ER-to-Golgi) and retrograde (Golgi-to-ER) transport. It has been reported that the inhibition of anterograde transport leads to the redistribution of Golgi components to the cytoplasm or the ER (Storrie et al., 1998; Ward et al., 2001; Miles et al., 2001).

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  • Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế đề tài:"Two-dimensional gel electrophoresis of membrane proteins from ectomycorrhizal fungi...

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  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Evaluation of protein pattern changes in roots and leaves of Zea mays plants in response to nitrate availability by two-dimensional gel electrophoresis analysis

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  • Evaluation of the patient with jaundice. MRCP, magnetic resonance cholangiopancreatography; ALT, alanine aminotransferase; AST, aspartate aminotransferase; SMA, smooth-muscle antibody; AMA, antimitochondrial antibody; LKM, liver-kidney microsomal antibody; SPEP, serum protein electrophoresis; CMV, cytomegalovirus; EBV, Epstein-Barr virus. Isolated Elevation of Serum Bilirubin Unconjugated Hyperbilirubinemia The differential diagnosis of an isolated unconjugated hyperbilirubinemia is limited (Table 43-1).

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  • Bệnh nhân 83 tuổi đàn bà, caucasian, trại nội thuơng hỏi ý kiến vì thiếu máu Hct 29%, MCV bình thuờng, MCH bình thường, Platelet bình thuờng (normocytic normochromic anemia), TB máu tráng 18 nghìn /mm3, nhưng bnhân đang uống Prednisone. Thử nghiệm gan, thận, LDH, Serum B12, Folate, Iron, TIBC, Ferritin, Protein electrophoresis, Serum immunofixation: normal, Nước đái: normal. Dòm phết máu dưới ống dầu (phóng đại 1000 lần): tb máu không thấy gì lạ, chỉ thấy hơi anisocytosis, poikilocytosis.

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  • Bnhân đàn bà, caucasian, khoảng 56-57 tuổi, vào nhà thương vì khó thở và ngủ li bì (lethargy). Máu lấy ở Emergency Dept cho thấy serum calcium 14 g/dL (normal thường ở khoảng 10). Hematocrit 30%, TBMáuTrắng 16nghìn/mm3. Platelet normal. Diện vịnh (serum protein electrophoresis) không thấy monoclonal gammopathy, electrolytes bình thường, serum creatinine: bình thường, thử nghiệm gan: bình thuờng (Total protein, Albumin, bilirubin: normal) Serum Inonized calcium xác nhận tăng Calcium.

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  • Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế đề tài: "Contribution of two-dimensional electrophoresis of proteins to maritime pine genetics...

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  • Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học 'Respiratory Research cung cấp cho các bạn kiến thức về ngành y đề tài: "Psoriasin, one of several new proteins identified in nasal lavage fluid from allergic and non-allergic individuals using 2-dimensional gel electrophoresis and mass spectrometry...

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  • The gold standard of assessing liver fibrosis is liver biopsy, which is invasive and not without risk. Therefore, searching for noninvasive serologic biomarkers for liver fibrosis is an importantly clinical issue. Methods: A total of 16 healthy volunteers and 45 patients with chronic hepatitis C virus (HCV) were enrolled (F0: n = 16, F1: n = 7, F2: n = 17, F3: n = 8 and F4: n = 13, according to the METAVIR classification). Three serum samples of each fibrotic stage were analyzed by two-dimension difference gel electrophoresis (2D-DIGE). The differential proteins were identified by...

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  • We used a proteomic approach to identify constitutively formed extracellu-lar proteins of Hypocrea atroviridis(Trichoderma atroviride), a known bio-control agent. The fungus was cultivated on glucose and the secretome was examined by two-dimensional gel electrophoresis.

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  • The presenilin proteins are required for intramembrane cleavage of a subset of type 1 membrane proteins including the Alzheimer’s disease amyloid precursor protein. Previous studies indicate presenilin proteins form enzymatically act-ive high molecular mass complexes consisting of hetero-dimers of N- and C-terminal fragments in association with nicastrin, presenilin enhancer-2 and anterior pharynx defective-1 proteins.

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  • Apsychrotrophic bacteriumShewanellasp. strain SIB1 was grown at 4 and 20C, and total soluble proteins extracted from the cells were analyzed by two-dimensional poly-acrylamide gel electrophoresis. Comparison ofthese pat-terns showed that the cellular content ofa protein with a molecular mass of28 kDa and an isoelectric point of four greatly increased at 4 C compared to that at 20C.

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  • A systematic search for Escherichia coli proteins with the zinc-binding activity was performed using the assay of radioactive Zn(II) binding to total E. coli proteins fractionated by two methods of two-dimensional gel electrophoresis. A total of 30–40 radioactive spots were identified, of which 14 have been assigned from N-terminal sequencing.

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  • Division of Medicinal and Natural Products Chemistry, Department of Chemistry and Department of Chemical Engineering, University of Iowa, USA; 2Department of Autoimmunology, Statens Serum Institut, Copenhagen, Denmark Synthetic peptides based on amino-acid residues 27–38 of human serum amyloid P component represent a novel type of heparin binders as they do not contain clusters of basic amino acids or other known features associated with protein or peptide heparin binding.

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  • Tuyển tập các báo cáo nghiên cứu khoa học quốc tế về bệnh thú y đề tài: Reference map of soluble proteins from Salmonella enterica serovar Enteritidis by two-dimensional electrophoresis

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