Chicken egg yolk cytoplasmic proteome, mined via combinatorial peptide ligand libraries. 2009

Alessia Farinazzo, and Umberto Restuccia, and Angela Bachi, and Luc Guerrier, and Frederic Fortis, and Egisto Boschetti, and Elisa Fasoli, and Attilio Citterio, and Pier Giorgio Righetti
Department of Chemistry, Materials and Chemical Egineering Giulio Natta, Politecnico di Milano, Via Mancinelli 7, 20131 Milan, Italy.

The use of combinatorial peptide ligand libraries (CPLLs), containing hexapeptides terminating with a primary amine, or modified with a terminal carboxyl group, or with a terminal tertiary amine, allowed discovering and identifying a large number of previously unreported egg yolk proteins. Whereas the most comprehensive list up to date [K. Mann, M. Mann, Proteomics, 8 (2008) 178-191] tabulated about 115 unique gene products in the yolk plasma, our findings have more than doubled this value to 255 unique protein species. From the initial non-treated egg yolk it was possible to find 49 protein species; the difference was generated thanks to the use of the three combined CPLLs. The aberrant behaviour of some proteins, upon treatment via the CPLL method, such as proteins that do not interact with the library, is discussed and evaluated. Simplified elution protocols from the CPLL beads are taken into consideration, of which direct elution in a single step via sodium dodecyl sulphate desorption seems to be quite promising. Alternative methods are suggested. The list of egg yolk components here reported is by far the most comprehensive at present and could serve as a starting point for isolation and functional characterization of proteins possibly having novel pharmaceutical and biomedical applications.

UI MeSH Term Description Entries
D002645 Chickens Common name for the species Gallus gallus, the domestic fowl, in the family Phasianidae, order GALLIFORMES. It is descended from the red jungle fowl of SOUTHEAST ASIA. Gallus gallus,Gallus domesticus,Gallus gallus domesticus,Chicken
D003593 Cytoplasm The part of a cell that contains the CYTOSOL and small structures excluding the CELL NUCLEUS; MITOCHONDRIA; and large VACUOLES. (Glick, Glossary of Biochemistry and Molecular Biology, 1990) Protoplasm,Cytoplasms,Protoplasms
D004530 Egg Yolk Cytoplasm stored in an egg that contains nutritional reserves for the developing embryo. It is rich in polysaccharides, lipids, and proteins. Egg Yolks,Yolk, Egg,Yolks, Egg
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D015180 Electrophoresis, Gel, Two-Dimensional Electrophoresis in which a second perpendicular electrophoretic transport is performed on the separate components resulting from the first electrophoresis. This technique is usually performed on polyacrylamide gels. Gel Electrophoresis, Two-Dimensional,Polyacrylamide Gel Electrophoresis, Two-Dimensional,2-D Gel Electrophoresis,2-D Polyacrylamide Gel Electrophoresis,2D Gel Electrophoresis,2D PAGE,2D Polyacrylamide Gel Electrophoresis,Electrophoresis, Gel, 2-D,Electrophoresis, Gel, 2D,Electrophoresis, Gel, Two Dimensional,Polyacrylamide Gel Electrophoresis, 2-D,Polyacrylamide Gel Electrophoresis, 2D,Two Dimensional Gel Electrophoresis,2 D Gel Electrophoresis,2 D Polyacrylamide Gel Electrophoresis,Electrophoresis, 2-D Gel,Electrophoresis, 2D Gel,Electrophoresis, Two-Dimensional Gel,Gel Electrophoresis, 2-D,Gel Electrophoresis, 2D,Gel Electrophoresis, Two Dimensional,PAGE, 2D,Polyacrylamide Gel Electrophoresis, 2 D,Polyacrylamide Gel Electrophoresis, Two Dimensional,Two-Dimensional Gel Electrophoresis
D053719 Tandem Mass Spectrometry A mass spectrometry technique using two (MS/MS) or more mass analyzers. With two in tandem, the precursor ions are mass-selected by a first mass analyzer, and focused into a collision region where they are then fragmented into product ions which are then characterized by a second mass analyzer. A variety of techniques are used to separate the compounds, ionize them, and introduce them to the first mass analyzer. For example, for in GC-MS/MS, GAS CHROMATOGRAPHY-MASS SPECTROMETRY is involved in separating relatively small compounds by GAS CHROMATOGRAPHY prior to injecting them into an ionization chamber for the mass selection. Mass Spectrometry-Mass Spectrometry,Mass Spectrometry Mass Spectrometry,Mass Spectrometry, Tandem
D019151 Peptide Library A collection of cloned peptides, or chemically synthesized peptides, frequently consisting of all possible combinations of amino acids making up an n-amino acid peptide. Phage Display Peptide Library,Random Peptide Library,Peptide Phage Display Library,Phage Display Library, Peptide,Synthetic Peptide Combinatorial Library,Synthetic Peptide Library,Libraries, Peptide,Libraries, Random Peptide,Libraries, Synthetic Peptide,Library, Peptide,Library, Random Peptide,Library, Synthetic Peptide,Peptide Libraries,Peptide Libraries, Random,Peptide Libraries, Synthetic,Peptide Library, Random,Peptide Library, Synthetic,Random Peptide Libraries,Synthetic Peptide Libraries
D020543 Proteome The protein complement of an organism coded for by its genome. Proteomes
D020650 Combinatorial Chemistry Techniques A technology, in which sets of reactions for solution or solid-phase synthesis, is used to create molecular libraries for analysis of compounds on a large scale. Chemistry Techniques, Combinatorial,Techniques, Combinatorial Chemistry,Chemistry Technic, Combinatorial,Chemistry Technics, Combinatorial,Chemistry Technique, Combinatorial,Combinatorial Chemistry Technic,Combinatorial Chemistry Technics,Combinatorial Chemistry Technique,Technic, Combinatorial Chemistry,Technics, Combinatorial Chemistry,Technique, Combinatorial Chemistry

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