泛素化蛋白檢測

原創發布者：北檢院發布時間：2024-01-22 點擊數：

注意：因業務調整，暫不接受個人委托測試望見諒。

泛素化蛋白檢測范圍

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泛素化蛋白檢測項目

泛素化蛋白, PTMs, 磷酸化位點, 甲基化位點, 乙酰化位點, 糖基化位點, O-葡萄糖基化位點, N-乙酰葡萄糖胺化位點, 硝化位點, 泛素化位點, 硫化位點, 丙二酰化位點, 泛素連接酶, 蛋白質修飾酶, 組氨酸甲基轉移酶, 組氨酸乙酰轉移酶, 研究用抗體, 斑點分析, 顆粒血漿免疫發射測定, 質譜分析, 單細胞測序, 轉錄組測序, 人蛋白質組計劃, 病毒學檢測, 熒光定量PCR, 超高靈敏檢測, 微量溶液檢測, 腫瘤標志物檢測, 抗體檢測, 細胞凋亡檢測, DNA/RNA提取, 全基因組測序, 包埋切片, 組織病理分析, 細胞分析沉降試驗, 結構代謝物檢測, 細胞增殖檢測, 血液生化分析

泛素化蛋白檢測方法

Western blotting: Western blotting is a commonly used method to detect ubiquitinated proteins. In this method, protein samples are separated by SDS-PAGE and transferred to a membrane. The membrane is then probed with an antibody specific to ubiquitin or a ubiquitin-binding protein to detect the presence of ubiquitinated proteins.

Immunoprecipitation (IP): Immunoprecipitation is a technique used to isolate a specific protein or protein complex from a mixture of proteins. In the case of ubiquitinated proteins, an antibody specific to the target protein is used to immunoprecipitate the protein along with its ubiquitinated forms. The immunoprecipitated complex can then be further analyzed using techniques like Western blotting or mass spectrometry.

Ubiquitin-affinity purification: Ubiquitin-affinity purification is a method used to specifically isolate ubiquitinated proteins from a complex protein mixture. This method utilizes a resin or column matrix with immobilized ubiquitin or ubiquitin-binding proteins. The ubiquitinated proteins from the sample selectively bind to the column, while non-ubiquitinated proteins are washed away. The captured ubiquitinated proteins can then be eluted and further analyzed.

Tandem affinity purification (TAP): Tandem affinity purification is a powerful method used to purify protein complexes. For the purification of ubiquitinated protein complexes, a tandem affinity tag consisting of two different affinity tags, such as protein A and protein G, is genetically fused to the target protein. The tagged protein is then purified using two consecutive affinity purification steps. This method enables the isolation of ubiquitinated protein complexes for further analysis.

Fluorescence microscopy: Fluorescence microscopy can be used to visualize and study the localization of ubiquitinated proteins within cells. This method involves the use of fluorescently labeled antibodies specific to ubiquitin or ubiquitin-binding proteins. The labeled antibodies are used to stain cells or tissue sections, and the distribution and intensity of the fluorescence signal can provide information about the localization and abundance of ubiquitinated proteins.

Mass spectrometry: Mass spectrometry is a powerful analytical technique used to identify and quantify proteins. In the context of ubiquitination, mass spectrometry can be used to identify ubiquitin modification sites on specific proteins or to perform global analyses of ubiquitinated proteins in a given sample. This method involves the proteolytic digestion of proteins, followed by analysis of the resulting peptides using mass spectrometry instruments.

Ubiquitin chain analysis: Ubiquitin chain analysis refers to the determination of the types and linkage patterns of ubiquitin chains present on a protein or in a sample. This can be done using techniques like immunoblotting or mass spectrometry, combined with specific antibodies or enrichment strategies to detect and analyze different types of ubiquitin chains, such as K48-, K63-, or linear linkages.

Ubiquitin-proteasome activity assays: These assays are used to measure the activity of the ubiquitin-proteasome system, which is responsible for the degradation of ubiquitinated proteins. Various substrates and fluorescent or luminescent readouts can be used to assess the activity of proteasomes and the degradation of ubiquitinated proteins. These assays can provide insights into the overall ubiquitin-proteasome system function and its involvement in diseases.

Ubiquitin-binding assays: Ubiquitin-binding assays are designed to study the interaction between ubiquitin and proteins that bind to it. These assays can be performed using purified proteins or in a cellular context. Techniques such as pull-down assays, co-immunoprecipitation (Co-IP), or protein microarrays can be used to identify and characterize proteins that interact with ubiquitin or ubiquitin-binding domains.

CRISPR/Cas9-mediated knockout: CRISPR/Cas9 technology can be used to generate gene knockouts or specific mutations in cells or organisms. By knocking out genes encoding components of the ubiquitin system, the effects on ubiquitination and protein degradation can be studied, providing insights into the biological functions of ubiquitination.

泛素化蛋白檢測儀器

電泳裝置,質譜儀,高效液相色譜儀 (HPLC),核磁共振 (NMR),原子吸收光譜儀 (AAS),紫外-可見分光光度計,熒光光譜儀,質譜儀,氣相色譜儀 (GC),液相色譜儀 (LC),電化學工作站,比色皿,聚合酶鏈式反應儀 (PCR),凝膠測定儀,螢光反應器,液體/氣體/固體色譜純化儀,細胞培養儀,流式細胞術,熒光顯微鏡,顯微鏡,透射電子顯微鏡