Trace phosphorylated peptide desalting column
A phosphorylated polypeptide and micro-quantity technology, which is applied in the direction of measuring devices, instruments, and material analysis by electromagnetic means, can solve the problems of inability to effectively retain phosphorylated modified polypeptides, and achieve simple and easy control of the process, high yield, and application wide range of effects
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0036] The preparation method of micro-volume desalting small column comprises the following steps:
[0037] 1) Fill the polypyrrole-modified quartz wool stored in ethanol solution into the micro ZipTip containing C18 reversed-phase separation material C18 Pipette, fill it tightly with a pipette;
[0038] 2) Seal the upper end of the micropipette to prevent the quartz wool from being sucked out during use.
[0039] The small column preservation and cleaning method comprises the following steps:
[0040] 1), the prepared micro desalting column is stored in ethanol solution;
[0041] 2) Wash three times with 80 wt% acetonitrile solution containing 0.1 wt% TFA before use, and then wash three times with aqueous solution containing 0.1 wt% TFA.
[0042] Sample loading method, sample washing method and sample elution method, including the following steps:
[0043] 1) Use 0.1wt% TFA to adjust the acidity of the trypsin hydrolyzate (~pH 8) to pH 2~3, then pipette back and forth se...
Embodiment 1
[0047] Preparation of micro phosphorylated polypeptide desalting cartridge and sample analysis.
[0048] The preparation steps are as follows:
[0049] 1) Weigh 0.01 g of quartz wool into a centrifuge tube, add 1 ml of deionized water and 25 μl of pyrrole, and sonicate for 10 minutes;
[0050]2) Quickly add 100 microliters of ammonium persulfate aqueous solution with a concentration of 20 micrograms / microliter to the mixture obtained in step 1), vortex to mix quickly, and then sonicate for 10 minutes;
[0051] 3), take step 2) to obtain the polypyrrole-modified quartz wool, wash it with ethanol, and store it in an ethanol solution;
[0052] 4), before analyzing the sample, load the product obtained in step 3) into a micro ZipTip C18 The upper part of the pipette was washed successively three times with 80 wt% acetonitrile solution containing 0.1 wt% TFA and 0.1 wt% TFA aqueous solution. Trypsin hydrolyzate (~pH8) was first adjusted to acidity with 0.1wt% TFA, pH 2~3, or dir...
Embodiment 2
[0055] The trace phosphorylated polypeptide desalting column prepared in Example 1 was used to analyze zebrafish egg phosphorylated proteins
[0056] 1. Preparation of TMTIP PPY-C18 a batch;
[0057] 2. Washing the desalting small column of trace phosphorylated polypeptide obtained in step 1 with 80wt% acetonitrile solution and aqueous solution containing 0.1wt% trifluoroethylene (TFA) successively;
[0058] 3. Use a pipette to directly load the trypsin lysate of zebrafish eggs, or adjust the pH to 2-3 before loading;
[0059] 4. Wash three times with an aqueous solution containing 0.1% TFA;
[0060] 5. Elution with 50% acetonitrile containing 0.1% TFA;
[0061] 6. Mass spectrometry experiment, mix the eluent and the matrix and drop it on the sample target, put it into the mass spectrometer (SYNAPT G2HDMS, WATERS, USA), adjust the frequency of the ultraviolet laser to 200HZ, the obtained mass spectrogram is as follows Figure 4 and 5 shown.
PUM
Property | Measurement | Unit |
---|---|---|
cover factor | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com