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Wyszukujesz frazę "phage display" wg kryterium: Temat

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    Wyświetlanie 1-4 z 4
    Tytuł:
    One-step purification of vitronectin from human plasma by affinity chromatography on phage-displayed peptides
    Autorzy:
    Skurzynski, Szymon
    Powiązania:
    https://bibliotekanauki.pl/articles/1040429.pdf
    Data publikacji:
    2010
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    affinity chromatography
    phage display
    vitronectin
    Opis:
    A novel affinity purification method for rapid isolation of vitronectin (VN) from human plasma is described. Recently we have used phage display technology to obtain clones expressing peptides with high binding activity for VN. The isolated "strong VN binders" were covalently coupled to CNBr-activated Sepharose. Human plasma was applied to the column and bound VN was eluted using 0.5 M acetic acid, giving purity exceeding 90%. The developed method is a convenient alternative to conventional antibody-antigen affinity chromatography techniques for purification of VN, as it offers low ligand cost, is rapid and ensures good protein recovery from human plasma.
    Źródło:
    Acta Biochimica Polonica; 2010, 57, 1; 89-93
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Novel peptide recognized by RhoA GTPase
    Autorzy:
    Drulis-Fajdasz, Dominika
    Jelen, Filip
    Oleksy, Arkadiusz
    Otlewski, Jacek
    Powiązania:
    https://bibliotekanauki.pl/articles/1041207.pdf
    Data publikacji:
    2006
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    GrafGAP
    RhoA GTPase
    epitope mapping
    PDZRhoGEF
    peptide phage display
    Opis:
    A phage-displayed random 7-mer disulfide bridge-constrained peptide library was used to map the surface of the RhoA GTPase and to find peptides able to recognize RhoA switch regions. Several peptide sequences were selected after four rounds of enrichment, giving a high signal in ELISA against RhoA-GDP. A detailed analysis of one such selected peptide, called R2 (CWSFPGYAC), is reported. The RhoA - R2 interaction was investigated using fluorescence spectroscopy, chemical denaturation, and determination of the kinetics of nucleotide exchange and GTP hydrolysis in the presence of RhoA regulatory proteins. All measurements indicate that the affinity of the R2 peptide for RhoA is in the micromolar range and that R2 behaves as an inhibitor of: i) GDP binding to the apo form of RhoA (Mg2+- and nucleotide-free form of the GTPase), ii) nucleotide exchange stimulated by GEF (DH/PH tandem from PDZRhoGEF), and iii) GTP hydrolysis stimulated by the BH domain of GrafGAP protein.
    Źródło:
    Acta Biochimica Polonica; 2006, 53, 3; 515-524
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Degenerate specificity of PDZ domains from RhoA-specific nucleotide exchange factors PDZRhoGEF and LARG
    Autorzy:
    Smietana, Katarzyna
    Kasztura, Monika
    Paduch, Marcin
    Derewenda, Urszula
    Derewenda, Zygmunt
    Otlewski, Jacek
    Powiązania:
    https://bibliotekanauki.pl/articles/1040739.pdf
    Data publikacji:
    2008
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    binding specificity
    LARG
    PDZ domain
    PDZRhoGEF
    phage display
    Opis:
    PDZ domains are ubiquitous protein-protein interaction modules which bind short, usually carboxyterminal fragments of receptors, other integral or membrane-associated proteins, and occasionally cytosolic proteins. Their role in organizing multiprotein complexes at the cellular membrane is crucial for many signaling pathways, but the rules defining their binding specificity are still poorly understood and do not readily explain the observed diversity of their known binding partners. Two homologous RhoA-specific, multidomain nucleotide exchange factors PDZRhoGEF and LARG contain PDZ domains which show a particularly broad recognition profile, as suggested by the identification of five diverse biological targets. To investigate the molecular roots of this phenomenon, we constructed a phage display library of random carboxyterminal hexapeptides. Peptide variants corresponding to the sequences identified in library selection were synthesized and their affinities for both PDZ domains were measured and compared with those of peptides derived from sequences of natural partners. Based on the analysis of the binding sequences identified for PDZRhoGEF, we propose a sequence for an 'optimal' binding partner. Our results support the hypothesis that PDZ-peptide interactions may be best understood when one considers the sum of entropic and dynamic effects for each peptide as a whole entity, rather than preferences for specific residues at a given position.
    Źródło:
    Acta Biochimica Polonica; 2008, 55, 2; 269-280
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A novel, stable, helical scaffold as an alternative binder - construction of phage display libraries
    Autorzy:
    Cyranka-Czaja, Anna
    Otlewski, Jacek
    Powiązania:
    https://bibliotekanauki.pl/articles/1039716.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    phage display
    construction of phage libraries
    alternative scaffold
    Opis:
    Specific, high affinity binding macromolecules are of great importance for biomedical and biotechnological applications. The most popular classical antibody-based molecules have recently been challenged by alternative scaffolds with desirable biophysical properties. Phage display technology applied to such scaffolds allows generation of potent affinity reagents by in vitro selection. Here, we report identification and characterization of a novel helical polypeptide with advantageous biophysical properties as a template for construction of phage display libraries. A three-helix bundle structure, based on Measles virus phosphoprotein P shows a very favourable stability and solubility profile. We designed, constructed and characterized six different types of phage display libraries based on the proposed template. Their functional size of over 109 independent clones, balanced codon bias and decent display level are key parameters attesting to the quality and utility of the libraries. The new libraries are a promising tool for isolation of high affinity binders based on a small helical scaffold which could become a convenient alternative to antibodies.
    Źródło:
    Acta Biochimica Polonica; 2012, 59, 3; 383-390
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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