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protein sample preparation


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  • GEL-FREE SAMPLE PREPARATION FOR THE NANOSCALE LC-MS/MS ANALYSIS AND IDENTIFICATION OF LOW-NANOGRAM PROTEIN SAMPLES 17763504

    Protein identification at the low nanogram level could in principle be obtained by most nanoscale LC-MS/MS systems. Nevertheless, the complex sample preparation procedures generally required in biological applications, and the consequent high risk of sample losses, very often hamper practical achievement of such low levels. In f...
    Typ dokumentu:
    Reference
    Katalogové číslo produktu:
    C5737
    Název katalogu produktů:
    ZipTip® Pipette Tips

  • Measurement of human surfactant protein-B turnover in vivo from tracheal aspirates using targeted proteomics. 20178338

    We describe a method to measure protein synthesis and catabolism in humans without prior purification and use the method to measure the turnover of surfactant protein-B (SP-B). SP-B, a lung-specific, hydrophobic protein essential for fetal-neonatal respiratory transition, is present in only picomolar quantities in tracheal aspir...
    Typ dokumentu:
    Reference
    Katalogové číslo produktu:
    Multiple
    Název katalogu produktů:
    Multiple

  • Large-Scale Filter-Aided Sample Preparation Method for the Analysis of the Ubiquitinome. 28260372

    Protein ubiquitination regulates key cellular functions, including protein homeostasis and signal transduction. The digestion of ubiquitinated proteins with trypsin yields a glycine-glycine remnant bound to the modified lysine residue (K-ε-GG) that can be recognized by specific antibodies for immunoaffinity purification (IAP) an...
    Typ dokumentu:
    Reference
    Katalogové číslo produktu:
    UFC901024
    Název katalogu produktů:
    Amicon® Ultra-15 Centrifugal Filter Unit

  • Homocysteine and other thiols determined in plasma by HPLC and thiol-specific postcolumn derivatization. 8353942

    We describe a versatile high-performance liquid-chromatographic method for determining homocysteine and other plasma sulfhydryls. Using three different procedures for preparation of plasma, we determined total, free (non-protein-bound), and reduced forms of homocysteine, cysteine, glutathione, cysteinylglycine, and gamma-glutamy...
    Typ dokumentu:
    Reference
    Katalogové číslo produktu:
    20-176
    Název katalogu produktů:
    100X GTPγS, 10mM

  • Rapid and sensitive determination of protein-nitrotyrosine by ELISA: Application to human plasma. 22276750

    3-Nitrotyrosine (3NT) is known as an important indicator of nitrosative stress and has been linked to various diseases. Our aim was to develop an indirect ELISA (enzyme-linked immunosorbent assay) method suitable for the detection of protein-bound 3NT in clinical plasma and serum samples. Nitrated protein standards and reduced p...
    Typ dokumentu:
    Reference
    Katalogové číslo produktu:
    06-284
    Název katalogu produktů:
    Anti-Nitrotyrosine Antibody

  • Spinning-disk confocal microscopy of yeast. 20946826

    Spinning-disk confocal microscopy is an imaging technique that combines the out-of-focus light rejection of confocal microscopy with the high sensitivity of wide-field microscopy. Because of its unique features, it is well suited to high-resolution imaging of yeast and other small cells. Elimination of out-of-focus light signifi...
    Typ dokumentu:
    Reference
    Katalogové číslo produktu:
    Multiple
    Název katalogu produktů:
    Multiple

  • Identification and quantification of Gi-type GTP-binding proteins that copurify with a pituitary somatostatin receptor 8449959

    Somatostatin (SRIF) receptors of GH4C1 cells occupied with biotinyl-NH-[Leu8,D-Trp22,Tyr25] somatostatin28 (bio-S28) have been affinity purified over streptavidin affinity columns (Eppler, C. M., Zysk, J. R., Corbett, M., and Shieh, H.-M. (1992) J. Biol. Chem. 267, 15603-15612). This procedure results in the copurification of a...
    Typ dokumentu:
    Reference
    Katalogové číslo produktu:
    Multiple
    Název katalogu produktů:
    Multiple

  • Cross-sample validation provides enhanced proteome coverage in rat vocal fold mucosa. 21423617

    The vocal fold mucosa is a biomechanically unique tissue comprised of a densely cellular epithelium, superficial to an extracellular matrix (ECM)-rich lamina propria. Such ECM-rich tissues are challenging to analyze using proteomic assays, primarily due to extensive crosslinking and glycosylation of the majority of high M(r) ECM...
    Typ dokumentu:
    Reference
    Katalogové číslo produktu:
    AB1954
    Název katalogu produktů:
    Anti-Fibronectin Antibody

  • Paraoxonase-3, a Putative Circulating Antioxidant, Is Systemically Up-Regulated in Late Gestation in the Fetal Rat, Sheep, and Human. 20463093

    Context: Surfactant is a successful therapeutic based on supplementing preterm infants with a substance that would normally have been up-regulated in late gestation. Although prematurity is associated with oxidative stress, no effective antioxidant therapy has yet been identified. Objective: Our objective was to identify endogen...
    Typ dokumentu:
    Reference
    Katalogové číslo produktu:
    2100
    Název katalogu produktů:
    Protein-Concentrate Kit (Micro)

  • Analysis of modified apolipoprotein B-100 structures formed in oxidized low-density lipoprotein using LC-MS/MS. 17549798

    Oxidatively modified low-density lipoprotein (oxLDL) is one of the major factors involved in the development of atherosclerosis. Because of the insolubility of apolipoprotein B-100 (apoB-100) and the heterogeneous nature of oxidative modification, modified structures of apoB-100 in oxLDL are poorly understood. We applied an on-M...
    Typ dokumentu:
    Reference
    Katalogové číslo produktu:
    C5737
    Název katalogu produktů:
    ZipTip® Pipette Tips