Multiplex measurement of protein-peptide dissociation constants using dialysis and mass spectrometry.
Multiplex measurement of protein-peptide dissociation constants using dialysis and mass spectrometry.
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DOI:
10.1002/pro.4607
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发表时间:
2023-04
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--
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We propose a high‐throughput method for quantitatively measuring hundreds of protein–peptide binding affinities in parallel. In this assay, a solution of protein is dialyzed into a buffer containing a pool of potential binding peptides, such that upon equilibration the relative abundance of a peptide species is mathematically related to that peptide's dissociation constant, K d . We use isobaric multiplexed quantitative proteomics to simultaneously determine the relative abundance, and hence the K d and its associated error, for an entire peptide library. We apply this technique, which we call PEDAL (parallel equilibrium dialysis for affinity learning), to determine accurate K d 's between a PDZ domain and hundreds of peptides, spanning an affinity range of multiple orders of magnitude in a single experiment. PEDAL is a convenient, fast, and low‐cost method for measuring large numbers of protein–peptide affinities in parallel, providing a rare combination of true in‐solution binding equilibria with the ability to multiplex.
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影响因子:
29.4
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Lee SJ;Ritter SL;Zhang H;Shim H;Hall RA;Yun CC
通讯作者:
Yun CC
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2.4
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Auer M
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Nardella C;Visconti L;Malagrinò F;Pagano L;Bufano M;Nalli M;Coluccia A;La Regina G;Silvestri R;Gianni S;Toto A
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Toto A
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3.4
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4.4
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通讯作者:
Yates, John R., III