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Saparbaev E, Zviagin A, Boyarkin OV. Identification of Isomeric Biomolecules by Infrared Spectroscopy of Solvent-Tagged Ions. Anal Chem 2022; 94:9514-9518. [PMID: 35759744 DOI: 10.1021/acs.analchem.2c01612] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The difference in functionality of many isomeric biomolecules requires their analytical identification for life science studies. We present a universal approach for quantitative identification of different small- to medium-sized isomeric biomolecules that can be brought to the gas phase from solution by electrospray ionization (ESI). The method involves infrared (IR) fragment cold ion spectroscopy of analyte molecules that are incompletely desolvated by soft ESI. The use of solvent molecules as natural tags removes a need for adding to solutions any special compounds, which may interfere with liquid chromatography or mass spectrometric measurements. The tested peptides and especially monosaccharides and lipids exhibit highly isomer-specific IR fragment spectra of such noncovalent complexes, which were produced from water, methanol, acetonitrile, and 2-butanol solutions. The relative concentrations in solution mixtures of, for instance, two isomeric dipeptides can be quantified with the accuracy of 1.6% and 2.9% for the acquisition time of 25 min and, potentially, 5 s, respectively; for three isomeric phospho-octapeptides, the accuracy becomes 4.1% and 11% for 17 min and, potentially, 10 s measurements, respectively.
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Affiliation(s)
- Erik Saparbaev
- Laboratoire de Chimie Physique Moléculaire, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Andrei Zviagin
- Laboratoire de Chimie Physique Moléculaire, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Oleg V Boyarkin
- Laboratoire de Chimie Physique Moléculaire, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
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Lobas AA, Solovyeva EM, Saparbaev E, Gorshkov MV, Boyarkin OV. Accelerating photofragmentation UV Spectroscopy-Mass spectrometry fingerprinting for quantification of isomeric peptides. Talanta 2021; 232:122412. [PMID: 34074402 DOI: 10.1016/j.talanta.2021.122412] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 04/07/2021] [Accepted: 04/08/2021] [Indexed: 02/07/2023]
Abstract
Identification of isomeric biomolecules remains a challenging analytical problem. A recently developed spectroscopic method that combines UV photofragmentation and mass spectrometry for fingerprinting of cold ions (2D UV-MS), has already demonstrated its high performance in the library-based identification and quantification of different types of biomolecular isomers. The practical use of the method has been hindered by a slow rate of data acquisition, which makes the fingerprinting incompatible with high-throughput analysis and online liquid chromatography (LC) separation. Herein we demonstrate how the use of a few pre-selected wavelengths can accelerate the method by two orders of magnitude without a significant loss of accuracy. As a proof of principle, 2D UV-MS fingerprinting was coupled to online LC separation and tested for quantification of isomeric peptides containing either Asp or isoAsp residues. The relative concentrations of the peptides mixed in solution have been determined, on average, with better than 4% and 6% accuracy for resolving and non-resolving gradients of LC separation, respectively.
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Affiliation(s)
- Anna A Lobas
- Laboratoire de Chimie Physique Moléculaire, École Polytechnique Fédérale de Lausanne, CH-1015, Lausanne, Switzerland; V.L. Talrose Institute for Energy Problems of Chemical Physics, Federal Research Center of Chemical Physics, RAS, Moscow, Russia
| | - Elizaveta M Solovyeva
- Laboratoire de Chimie Physique Moléculaire, École Polytechnique Fédérale de Lausanne, CH-1015, Lausanne, Switzerland; V.L. Talrose Institute for Energy Problems of Chemical Physics, Federal Research Center of Chemical Physics, RAS, Moscow, Russia; Moscow Institute of Physics and Technology (National Research University), Dolgoprudny, Russia
| | - Erik Saparbaev
- Laboratoire de Chimie Physique Moléculaire, École Polytechnique Fédérale de Lausanne, CH-1015, Lausanne, Switzerland
| | - Mikhail V Gorshkov
- V.L. Talrose Institute for Energy Problems of Chemical Physics, Federal Research Center of Chemical Physics, RAS, Moscow, Russia
| | - Oleg V Boyarkin
- Laboratoire de Chimie Physique Moléculaire, École Polytechnique Fédérale de Lausanne, CH-1015, Lausanne, Switzerland.
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Saparbaev E, Kopysov V, Aladinskaia V, Ferrieres V, Legentil L, Boyarkin OV. Identification and Quantification of Any Isoforms of Carbohydrates by 2D UV-MS Fingerprinting of Cold Ions. Anal Chem 2020; 92:14624-14632. [PMID: 33138380 DOI: 10.1021/acs.analchem.0c03122] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Biological functionality of isomeric carbohydrates may differ drastically, making their identifications indispensable in many applications of life science. Because of the large number of isoforms, structural assignment of saccharides is challenging and often requires a use of different orthogonal analytical techniques. We demonstrate that isomeric carbohydrates of any isoforms can be distinguished and quantified using solely the library-based method of 2D ultraviolet fragmentation spectroscopy-mass spectrometry (2D UV-MS) of cold ions. The two-dimensional "fingerprint" identities of UV transparent saccharides were revealed by photofragmentation of their noncovalent complexes with aromatic molecules. We assess the accuracy of the method by comparing the known relative concentrations of isomeric carbohydrates mixed in solution with the concentrations that were mathematically determined from the measured in the gas-phase fingerprints of the complexes. For the tested sets with up to five isomers of di- to heptasaccharides, the root-mean-square deviation of 3-5% was typically achieved. This indicates the expected level of accuracy in analysis of unknown mixtures for isomeric carbohydrates of similar complexity.
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Affiliation(s)
- Erik Saparbaev
- Laboratoire de Chimie Physique Moléculaire, École Polytechnique Fédérale de Lausanne, Station-6, 1015 Lausanne, Switzerland
| | - Vladimir Kopysov
- Laboratoire de Chimie Physique Moléculaire, École Polytechnique Fédérale de Lausanne, Station-6, 1015 Lausanne, Switzerland
| | - Viktoriia Aladinskaia
- Laboratoire de Chimie Physique Moléculaire, École Polytechnique Fédérale de Lausanne, Station-6, 1015 Lausanne, Switzerland
| | - Vincent Ferrieres
- Université de Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR-UMR 6226, F-35000 Rennes, France
| | - Laurent Legentil
- Université de Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR-UMR 6226, F-35000 Rennes, France
| | - Oleg V Boyarkin
- Laboratoire de Chimie Physique Moléculaire, École Polytechnique Fédérale de Lausanne, Station-6, 1015 Lausanne, Switzerland
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Saparbaev E, Kopysov V, Yamaletdinov R, Pereverzev AY, Boyarkin OV. Interplay of H‐Bonds with Aromatics in Isolated Complexes Identifies Isomeric Carbohydrates. Angew Chem Int Ed Engl 2019; 58:7346-7350. [DOI: 10.1002/anie.201902377] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 03/20/2019] [Indexed: 02/06/2023]
Affiliation(s)
- Erik Saparbaev
- Laboratoire de Chimie Physique MoléculaireÉcole Polytechnique Fédérale de Lausanne 1015 Lausanne Switzerland
| | - Vladimir Kopysov
- Laboratoire de Chimie Physique MoléculaireÉcole Polytechnique Fédérale de Lausanne 1015 Lausanne Switzerland
| | - Ruslan Yamaletdinov
- Nikolaev Institute of Inorganic Chemistry Novosibirsk 630090 Russian Federation
| | - Aleksandr Y. Pereverzev
- Laboratoire de Chimie Physique MoléculaireÉcole Polytechnique Fédérale de Lausanne 1015 Lausanne Switzerland
| | - Oleg V. Boyarkin
- Laboratoire de Chimie Physique MoléculaireÉcole Polytechnique Fédérale de Lausanne 1015 Lausanne Switzerland
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Solovyeva EM, Kopysov VN, Pereverzev AY, Lobas AA, Moshkovskii SA, Gorshkov MV, Boyarkin OV. Method for Identification of Threonine Isoforms in Peptides by Ultraviolet Photofragmentation of Cold Ions. Anal Chem 2019; 91:6709-6715. [DOI: 10.1021/acs.analchem.9b00770] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Elizaveta M. Solovyeva
- Laboratoire de Chimie Physique Moléculaire, École Polytechnique Fédérale de Lausanne, Station-6, 1015 Lausanne, Switzerland
- Moscow Institute of Physics and Technology (State University), 9 Institutskiy per., Dolgoprudny, Moscow Region, 141701, Russia
- V.L. Talrose Institute for Energy Problems of Chemical Physics, Russian Academy of Sciences, 38 Leninsky Pr., Bld.2 Moscow, 119334, Russia
| | - Vladimir N. Kopysov
- Laboratoire de Chimie Physique Moléculaire, École Polytechnique Fédérale de Lausanne, Station-6, 1015 Lausanne, Switzerland
| | - Aleksandr Y. Pereverzev
- Laboratoire de Chimie Physique Moléculaire, École Polytechnique Fédérale de Lausanne, Station-6, 1015 Lausanne, Switzerland
| | - Anna A. Lobas
- V.L. Talrose Institute for Energy Problems of Chemical Physics, Russian Academy of Sciences, 38 Leninsky Pr., Bld.2 Moscow, 119334, Russia
| | | | - Mikhail V. Gorshkov
- V.L. Talrose Institute for Energy Problems of Chemical Physics, Russian Academy of Sciences, 38 Leninsky Pr., Bld.2 Moscow, 119334, Russia
| | - Oleg V. Boyarkin
- Laboratoire de Chimie Physique Moléculaire, École Polytechnique Fédérale de Lausanne, Station-6, 1015 Lausanne, Switzerland
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Saparbaev E, Kopysov V, Yamaletdinov R, Pereverzev AY, Boyarkin OV. Interplay of H‐Bonds with Aromatics in Isolated Complexes Identifies Isomeric Carbohydrates. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201902377] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Erik Saparbaev
- Laboratoire de Chimie Physique MoléculaireÉcole Polytechnique Fédérale de Lausanne 1015 Lausanne Switzerland
| | - Vladimir Kopysov
- Laboratoire de Chimie Physique MoléculaireÉcole Polytechnique Fédérale de Lausanne 1015 Lausanne Switzerland
| | - Ruslan Yamaletdinov
- Nikolaev Institute of Inorganic Chemistry Novosibirsk 630090 Russian Federation
| | - Aleksandr Y. Pereverzev
- Laboratoire de Chimie Physique MoléculaireÉcole Polytechnique Fédérale de Lausanne 1015 Lausanne Switzerland
| | - Oleg V. Boyarkin
- Laboratoire de Chimie Physique MoléculaireÉcole Polytechnique Fédérale de Lausanne 1015 Lausanne Switzerland
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7
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Affiliation(s)
- Oleg V. Boyarkin
- Laboratoire de Chimie Physique Moléculaire, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
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Roy TK, Kopysov V, Pereverzev A, Šebek J, Gerber RB, Boyarkin OV. Intrinsic structure of pentapeptide Leu-enkephalin: geometry optimization and validation by comparison of VSCF-PT2 calculations with cold ion spectroscopy. Phys Chem Chem Phys 2018; 20:24894-24901. [PMID: 30234204 DOI: 10.1039/c8cp03989e] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The intrinsic structure of an opioid peptide [Ala2, Leu5]-leucine enkephalin (ALE) has been investigated using first-principles based vibrational self-consistent field (VSCF) theory and cold ion spectroscopy. IR-UV double resonance spectroscopy revealed the presence of only one highly abundant conformer of the singly protonated ALE, isolated and cryogenically cooled in the gas phase. High-level quantum mechanical calculations of electronic structures in conjunction with a systematic conformational search allowed for finding a few low-energy candidate structures. In order to identify the observed structure, we computed vibrational spectra of the candidate structures and employed the theory at the semi-empirically scaled harmonic level and at the first-principles based anharmonic VSCF levels. The best match between the calculated "anharmonic" and the measured spectra appeared, indeed, for the most stable candidate. An average of two spectra calculated with different quantum mechanical potentials is proposed for the best match with experiment. The match thus validates the calculated intrinsic structure of ALE and demonstrates the predictive power of first-principles theory for solving structures of such large molecules.
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Affiliation(s)
- Tapta Kanchan Roy
- Department of Chemistry and Chemical Sciences, Central University of Jammu, Rahya-Suchani (Bagla), Jammu 181143, India
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