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Ltq mass spectrometry

Manufactured by Thermo Fisher Scientific
Sourced in United States

The LTQ mass spectrometry is a high-performance analytical instrument designed for the detection and identification of chemical compounds. It utilizes an ion trap mass analyzer to separate and detect ions based on their mass-to-charge ratio. The LTQ provides accurate and sensitive mass measurements, enabling the analysis of a wide range of molecules in various applications.

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Lab products found in correlation

2 protocols using ltq mass spectrometry

1

RNA Immunoprecipitation and Mass Spectrometry

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For RNA IPs, antibodies were covalently cross-linked to protein A Sepharose beads in dimethylpimelimidate (Sigma) at a 1:1 ratio of beads to antibody. Nuclear extract was rotated with antibody–cross-linked beads overnight at 4 oC. Half of the immunoprecipitates were used for SDS-polyacrylamide gel electrophoresis followed by western blot and half were used for RNAs extraction using phenol/chloroform extraction. For IP and mass spectrometry analysis, HeLa cells co-tranfected with tRNA and β-globin constructs were harvested 24 h after transfection and resuspended in 500 μl NET-2 buffer (50 mM Tris-HCl, pH 7.4/200 mM NaCl/0.1% NP40/1 mM PMSF) followed by sonication. After centrifuge, the supernatants were used for IPs using HA antibody covalently cross-linked to protein A Sepharose beads. The immunoprecipitates were used for liquid chromatography-tandem mass spectrometry analysis on a LTQ mass spectrometry (Thermo Fisher Scientific, USA).
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2

RNA Immunoprecipitation and Mass Spectrometry

Check if the same lab product or an alternative is used in the 5 most similar protocols
For RNA Immunoprecipitations, antibodies were covalently crosslinked to protein A Sepharose beads in dimethylpimelimidate (Sigma) at a 1:1 ratio of beads to antibody. Nuclear extract was rotated with antibody-crosslinked beads overnight at 4°C. Half of the immunoprecipitates were used for SDS-PAGE followed by western blot and half were used for RNAs extraction using phenol/chloroform extraction. For immunoprecipitation and mass spectrometry analysis, HeLa cells co-tranfected with tRNA and β-globin constructs were harvested 24 hrs after transfection and resuspended in 500 μl NET-2 buffer (50mM Tris-HCl, pH7.4/200mM NaCl/0.1% NP40/1mM PMSF) followed by sonication. After centrifuge, the supernatants were used for immunoprecipitations using HA antibody covalently crosslinked to protein A Sepharose beads. The immunoprecipitates were used for Liquid chromatography-Tandem mass spectrometry analysis (LC-MS/MS) on a LTQ mass spectrometry (Thermo Fisher Scientific).
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