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Examining Protein Interactions Using the Large- Scale Pull-down Approach and Endogenously Tagged Yeast Strains (CROSBI ID 588598)

Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija

Suter, Bernhard ; Fetchko, Michael ; Imhof, Ralph ; Stoffel-Studer Ingrid ; Zbinden, Caroline ; Beneti, Lucija ; Hort, Jacqueline ; Stagljar, Igor Examining Protein Interactions Using the Large- Scale Pull-down Approach and Endogenously Tagged Yeast Strains. 2006

Podaci o odgovornosti

Suter, Bernhard ; Fetchko, Michael ; Imhof, Ralph ; Stoffel-Studer Ingrid ; Zbinden, Caroline ; Beneti, Lucija ; Hort, Jacqueline ; Stagljar, Igor

engleski

Examining Protein Interactions Using the Large- Scale Pull-down Approach and Endogenously Tagged Yeast Strains

The organization of the cellular proteome into multiprotein complexes is a major focus for functional proteomics. In yeast Saccharomyces cerevisae, systematic approaches have proven to be successful to determine large protein assemblies and to assign new functions to the associated proteins. Here, we present a novel approach (“Cross and Capture”) that allows a rapid assessment of protein-protein interactions in yeast using two sets of differently tagged yeast arrays in the two haploid mating types. Open reading frames (ORFs) in the a-haplotype (bait) array were tagged with six consecutive histidines (6xHIS), whereas ORFs in the ?-haplotype (prey) array were tagged with the 3xVSV epitope, respectively. In order to determine protein- protein interactions, a specific bait strain is selected and mated with a set of strains containing potential preys. Protein extracts from the diploids containing both tags are then incubated with nickel beads that bind to the 6xHIS tag and thus allow the“pull-down” of bait and bait-associated proteins. Association of the selected prey proteins is then verified by probing Western Blots with anti-VSV antibody. So far we have generated and verified two sets of 500 bait and prey strains that comprise known DNA replication, repair and recombination proteins, but also a large number of yeast nuclear ORFs of unascribed function. “Cross and Capture” was successfully used to detect a number of previously described multiprotein complexes and extensive screenings for novel protein-protein interactions are currently underway.

protein-protein interactions; cross and capture system

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Podaci o prilogu

2006.

objavljeno

Podaci o matičnoj publikaciji

Podaci o skupu

2006 Yeast Genetics and Molecular Biology Meeting

poster

25.07.2006-30.07.2006

Princeton (NJ), Sjedinjene Američke Države

Povezanost rada

Biologija