摘要:
The present invention relates to a method of purifying peptides and/or polypeptides, said method comprising or consisting of: (a) loading a sample comprising peptides and/or polypeptides under acidic or neutral aqueous conditions on mixed-phase solid phase extraction (SPE) material, wherein said material consists of or comprises reversed phase/ion exchange material; (b) washing said mixed-phase SPE material with (ba) an acidic or neutral composition comprising at least 50% (vlv) organic solvent; and/or (bb) an acidic or neutral aqueous solution; and (c) eluting said peptides and/or polypeptides from said mixed-phase SPE material with an alkaline composition comprising at least 50% (v/v) organic solvent.
摘要:
The present invention relates to sample preparation container for purification and/or enrichment of bio-organic compounds from cellular material, viruses and/or sub-components of said cellular material and/or viruses, the container comprising a reaction chamber and a chromatography medium; wherein said reaction chamber is for holding said cellular material, viruses and/or sub-components of said cellular material and/or viruses and is configured such that at least one of the following reactions can be performed therein: lysis, e.g. by sonication and/or boiling; chromatographic purification; reduction; alkylation; and enzymatic reactions such as proteolysis; wherein said chromatography medium is configured to purify and/or enrich said bio-organic compounds; wherein (a) said chromatography medium is located at a wall of said reaction chamber, and said wall is closed or sealed and configured to be opened for obtaining purified and/or enriched bio-organic compounds; or (b) said sample preparation container further comprises a receiving chamber for receiving said bio-organic compounds, said receiving chamber being adjacent to said chromatography medium such that said chromatography medium separates said reaction chamber from said receiving chamber, and the outer face of said receiving chamber is closed and configured to be opened for obtaining purified and/or enriched bio-organic compounds.
摘要:
The present invention relates to a use of a tertiary amine as buffer in sample preparation, preferably for mass spectrometry and/or UV/vis spectroscopy, wherein the sample comprises proteins, polypeptides and/or peptides, and said sample preparation comprises: (a) protein, polypeptide and peptide denaturation; and (b) chemical isotope labelling and/or chemical cross-linking, wherein said sample preparation does not use primary amine buffers.
摘要:
The present invention relates to a device for preventing band broadening and remixing of separated fractions, and associated method, comprising a chromatographic column coupled to a flow selector, such as a rotary valve, wherein said flow selector is connected to the distal end of said column such that the sum of post-column swept volume and post-column dead volume is less than 10 μL. Preferably, the column is directly plugged into the inlet port of the rotary valve and the sample is fractionated at the outlet port.
摘要:
The present invention relates to the use of a modulator of a polypeptide having or comprising an amino acid sequence as disclosed herein or of a functional fragment or derivative thereof or of a polynucleotide encoding said polypeptide or fragment or derivative for the preparation of a pharmaceutical composition for preventing, alleviating or treating diseases or conditions associated with the degeneration or injury of vertebrate nervous tissue, associated with seizures or associated with angiogenic disorders or disorders of the cardio-vascular system. Furthermore, the invention provides for the use of a modulator of a polypeptide having or comprising said amino acid sequence of of a functional fragment or derivative thereof or of a polynucleotide encoding said polypeptide or fragment or derivative for the preparation of a pharmaceutical composition for preventing, alleviating or treating diseases or conditions associated with the degeneration or injury of vertebrate nervous tissue, associated with angiogenic disorders or disorders of the cardio-vascular system. In addition the invention provides for the use of said polypeptide or said functional fragment or derivative thereof for the preparation of a pharmaceutical composition for preventing or treating tumor growth or formation of tumor metastases or as a marker of stem cells.