Trapped Ion Mobility Spectrometry of Native Macromolecular Assemblies.
Trapped Ion Mobility Spectrometry of Native Macromolecular Assemblies.
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DOI:
10.1021/acs.analchem.0c04556
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发表时间:
2021-02-09
影响因子:
7.4
通讯作者:
Fernandez-Lima F
中科院分区:
文献类型:
--
作者:
Jeanne Dit Fouque K;Garabedian A;Leng F;Tse-Dinh YC;Ridgeway ME;Park MA;Fernandez-Lima F
The structural elucidation of native macromolecular assemblies has been a subject of considerable interest in native mass spectrometry (MS), and more recently in tandem with ion mobility spectrometry (IMS-MS), for a better understanding of their biochemical and biophysical functions. In the present work, we describe a new generation trapped ion mobility spectrometer (TIMS), with extended mobility range (K0 = 0.185 – 1.84 cm2.V−1.s−1), capable of trapping high molecular weight (MW) macromolecular assemblies. This compact 4-cm long TIMS analyzer utilizes a convex electrode, quadrupolar geometry with increased pseudopotential penetration in the radial dimension, extending the mobility trapping to high MW species under native state (i.e., lower charge states). The TIMS capabilities to perform variable scan rate (Sr) mobility measurements over short time (100–500 ms), high mobility resolution, and ion-neutral collision cross section (CCSN2) measurements are presented. The trapping capabilities of the convex electrode TIMS geometry and ease of operation over a wide gas flow, rf range and electric field trapping range are illustrated for the first time using a comprehensive list of standards varying from CsI clusters (n=6–73), Tuning Mix oligomers (n=1–5), common proteins (e.g., ubiquitin, cytochrome C, lysozyme, concanavalin (n=1–4), carbonic anhydrase, β clamp (n=1–4), topoisomerase IB, bovine serum albumin (n=1–3), topoisomerase IA, alcohol dehydrogenase), IgG antibody (e.g., avastin), protein-DNA complexes, and macromolecular assemblies (e.g., GroEL and RNA Polymerase (n=1–2)) covering a wide mass (up to m/z 19,000) and CCS range (up to 22,000 Å2 with < 0.6% RSD).
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DOI:
10.1021/acs.jpcb.0c04276
发表时间:
2020-07-23
期刊:
The journal of physical chemistry. B
影响因子:
--
作者:
Jeanne Dit Fouque K;Fernandez-Lima F
通讯作者:
Fernandez-Lima F
影响因子:
1.8
作者:
Butcher, David;Bernad, Sophie;Fernandez-Lima, Francisco
通讯作者:
Fernandez-Lima, Francisco
影响因子:
2
作者:
Giles, Kevin;Williams, Jonathan P.;Campuzano, Iain
通讯作者:
Campuzano, Iain
DOI:
10.1007/s12127-016-0198-z
发表时间:
2016-09-01
影响因子:
--
作者:
Adams, Kendra J.;Montero, Dennise;Fernandez-Lima, Francisco
通讯作者:
Fernandez-Lima, Francisco
影响因子:
7.4
作者:
Bleiholder C;Liu FC;Chai M
通讯作者:
Chai M