Informace o publikaci

Pull-down Assay on Streptavidin Beads and Surface Plasmon Resonance Chips for SWATH-MS-based Interactomics

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MARYÁŠ Josef FAKTOR Jakub ČÁPKOVÁ Lenka MÜLLER Petr SKLÁDAL Petr BOUCHAL Pavel

Druh Článek v odborném periodiku
Časopis / Zdroj CANCER GENOMICS & PROTEOMICS
Fakulta / Pracoviště MU

Přírodovědecká fakulta

Citace
Doi http://dx.doi.org/10.21873/cgp.20098
Klíčová slova LC-SWATH-MS/MS; pull-down assay; PDLIM2; protein-protein interactions; SPR
Popis Background/Aim: Pul-down assay is a popular in vitro method for identification of physical interactors of selected proteins. Here, for the first time, we compared three conventional variants of pull-down assay with the streptavidin-modified surface plasmon resonance (SPR) chips for the detection of PDZ and LIM domain protein 2 (PDLIM2) interaction partners. Materials and Methods: PDLIM2 protein-protein interactions were analysed by three variants of pull-down assay on streptavidin beads using LC-MS/MS in "Sequential Window Acquisition of all Theoretical fragment ion spectra (SWATH)" mode and compared with LC-SWATHMS/MS data from SPR chips. Results: The results showed that (i) the use of SPR chip led to comparable data compared to on-column streptavidin beads, (ii) gravity flow and microflow in wash and elution steps provided better results than centrifugation, and (iii) type and concentration of detergent did not significantly affect the interactome data of cancer-associated PDLIM2. Conclusion: Our study supports further application of SPR-based affinity purification with SWATH mass spectrometry for reproducible and controlled characterization of cancer-associated interactomes.
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