Abstract:
:The functional state of a cell is largely determined by the spatiotemporal organization of its proteome. Technologies exist for measuring particular aspects of protein turnover and localization, but comprehensive analysis of protein dynamics across different scales is possible only by combining several methods. Here we describe tandem fluorescent protein timers (tFTs), fusions of two single-color fluorescent proteins that mature with different kinetics, which we use to analyze protein turnover and mobility in living cells. We fuse tFTs to proteins in yeast to study the longevity, segregation and inheritance of cellular components and the mobility of proteins between subcellular compartments; to measure protein degradation kinetics without the need for time-course measurements; and to conduct high-throughput screens for regulators of protein turnover. Our experiments reveal the stable nature and asymmetric inheritance of nuclear pore complexes and identify regulators of N-end rule–mediated protein degradation.
journal_name
Nat Biotechnoljournal_title
Nature biotechnologyauthors
Khmelinskii A,Keller PJ,Bartosik A,Meurer M,Barry JD,Mardin BR,Kaufmann A,Trautmann S,Wachsmuth M,Pereira G,Huber W,Schiebel E,Knop Mdoi
10.1038/nbt.2281subject
Has Abstractpub_date
2012-06-24 00:00:00pages
708-14issue
7eissn
1087-0156issn
1546-1696pii
nbt.2281journal_volume
30pub_type
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