Label-Free Single-Molecule Pulldown for the Detection of Released Cellular Protein Complexes.
Label-Free Single-Molecule Pulldown for the Detection of Released Cellular Protein Complexes.
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DOI:
10.1021/acscentsci.2c00602
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发表时间:
2022-09-28
影响因子:
18.2
通讯作者:
Wang, Shaopeng
中科院分区:
文献类型:
--
作者:
Ma, Guangzhong;Zhang, Pengfei;Zhou, Xinyu;Wan, Zijian;Wang, Shaopeng
Precise and sensitive detection of intracellular proteins and complexes is key to the understanding of signaling pathways and cell functions. Here, we present a label-free single-molecule pulldown (LFSMP) technique for the imaging of released cellular protein and protein complexes with single-molecule sensitivity and low sample consumption down to a few cells per mm2. LFSMP is based on plasmonic scattering imaging and thus can directly image the surface-captured molecules without labels and quantify the binding kinetics. In this paper, we demonstrate the detection principle for LFSMP, study the phosphorylation of protein complexes involved in a signaling pathway, and investigate how kinetic analysis can be used to improve the pulldown specificity. We wish our technique can contribute to uncovering the molecular mechanisms in cells with single-molecule resolution. A plasmonic imaging technique for quantifying intracellular protein complexes at the single-molecule level using only dozens of cells is demonstrated.
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影响因子:
3.7
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Lee JW;Park S;Takahashi Y;Wang HG
通讯作者:
Wang HG
影响因子:
4.4
作者:
Takemori A;Butcher DS;Harman VM;Brownridge P;Shima K;Higo D;Ishizaki J;Hasegawa H;Suzuki J;Yamashita M;Loo JA;Loo RRO;Beynon RJ;Anderson LC;Takemori N
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Takemori N
影响因子:
15
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Yoon, Tae-Young
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9.9
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Drew K;Lee C;Huizar RL;Tu F;Borgeson B;McWhite CD;Ma Y;Wallingford JB;Marcotte EM
通讯作者:
Marcotte EM
影响因子:
3.3
作者:
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通讯作者:
Bard, Allen J.