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Cai J, Song M, Li M, Merchant M, Benz F, McClain C, Klein J. Site-Specific Identification of Protein S-Acylation by IodoTMT0 Labeling and Immobilized Anti-TMT Antibody Resin Enrichment. J Proteome Res 2024; 23:673-683. [PMID: 38157263 DOI: 10.1021/acs.jproteome.3c00525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
Protein S-acylation is a reversible post-translational modification (PTM). It is present on diverse proteins and has important roles in regulating protein function. Aminolysis with hydroxylamine is widely used in the global identification of the PTM. However, the identification is indirect. Distinct criteria have been used for identification, and the false discovery rate has not been addressed. Here, we report a site-specific method for S-acylation identification based on tagging of S-acylation sites with iodoTMT0. Efforts to improve the performance of the method and confidence of identification are discussed, highlighting the importance of reducing contaminant peptides and keeping the recovery rate consistent between aliquots with or without hydroxylamine treatment. With very stringent criteria, presumptive S-acylation sites of 269, 684, 695, and 780 were identified from HK2 cells, HK11 cells, mouse brain, and mouse liver samples, respectively. Among them, the newly identified protein S-acylation sites are equivalent to 34% of human and 24% of mouse S-acylation sites reported previously. In addition, false-positive rates for S-acylation identification and S-acylation abundances were estimated. Significant differences in S-acylation abundance were found from different samples (from 0.08% in HK2 cells to 0.76% in mouse brain), and the false-positive rates were significantly higher for samples with a low abundance of S-acylation.
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Affiliation(s)
- Jian Cai
- Division of Nephrology and Hypertension, Department of Medicine, University of Louisville School of Medicine, Louisville, Kentucky 40292, United States
| | - Ming Song
- Division of Gastroenterology, Hepatology and Nutrition, Department of Medicine, University of Louisville School of Medicine, Louisville, Kentucky 40292, United States
- Hepatobiology and Toxicology Center, University of Louisville, Louisville, Kentucky 40292, United States
| | - Ming Li
- Division of Nephrology and Hypertension, Department of Medicine, University of Louisville School of Medicine, Louisville, Kentucky 40292, United States
| | - Michael Merchant
- Division of Nephrology and Hypertension, Department of Medicine, University of Louisville School of Medicine, Louisville, Kentucky 40292, United States
| | - Frederick Benz
- Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, Kentucky 40202, United States
| | - Craig McClain
- Division of Gastroenterology, Hepatology and Nutrition, Department of Medicine, University of Louisville School of Medicine, Louisville, Kentucky 40292, United States
- Hepatobiology and Toxicology Center, University of Louisville, Louisville, Kentucky 40292, United States
- Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, Kentucky 40202, United States
- Robley Rex Veterans Affairs Medical Center, Louisville, Kentucky 40292, United States
- Alcohol Research Center, University of Louisville, Louisville, Kentucky 40202, United States
| | - Jon Klein
- Division of Nephrology and Hypertension, Department of Medicine, University of Louisville School of Medicine, Louisville, Kentucky 40292, United States
- Robley Rex Veterans Affairs Medical Center, Louisville, Kentucky 40292, United States
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Simon L, Steinmetz L, Feige B, Benz F, Spiegelhalder K, Baumeister H. Comparing Face-to-Face Cognitive Behavioral Therapy with Digitalized Cognitive Behavioral Therapy for Insomnia: A Network Meta-Analysis. Sleep Med 2022. [DOI: 10.1016/j.sleep.2022.05.313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Mertens J, Demetriadou A, Bowman RW, Benz F, Kleemann ME, Tserkezis C, Shi Y, Yang HY, Hess O, Aizpurua J, Baumberg JJ. Tracking Optical Welding through Groove Modes in Plasmonic Nanocavities. Nano Lett 2016; 16:5605-11. [PMID: 27529641 DOI: 10.1021/acs.nanolett.6b02164] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
We report the light-induced formation of conductive links across nanometer-wide insulating gaps. These are realized by incorporating spacers of molecules or 2D monolayers inside a gold plasmonic nanoparticle-on-mirror (NPoM) geometry. Laser irradiation of individual NPoMs controllably reshapes and tunes the plasmonic system, in some cases forming conductive bridges between particle and substrate, which shorts the nanometer-wide plasmonic gaps geometrically and electronically. Dark-field spectroscopy monitors the bridge formation in situ, revealing strong plasmonic mode mixing dominated by clear anticrossings. Finite difference time domain simulations confirm this spectral evolution, which gives insights into the metal filament formation. A simple analytic cavity model describes the observed plasmonic mode hybridization between tightly confined plasmonic cavity modes and a radiative antenna mode sustained in the NPoM. Our results show how optics can reveal the properties of electrical transport across well-defined metallic nanogaps to study and develop technologies such as resistive memory devices (memristors).
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Affiliation(s)
- J Mertens
- NanoPhotonics Centre, Cavendish Laboratory, University of Cambridge , Cambridge, CB3 0HE, United Kingdom
| | - A Demetriadou
- Centro de Física de Materiales, Centro Mixto CSIC-UPV/EHU, and Donostia International Physics Center (DIPC), Paseo Manuel Lardizabal 4, 20018 Donostia-San Sebastian, Spain
- Blackett Laboratory, Department of Physics, Imperial College London , London SW7 2AZ, United Kingdom
| | - R W Bowman
- NanoPhotonics Centre, Cavendish Laboratory, University of Cambridge , Cambridge, CB3 0HE, United Kingdom
| | - F Benz
- NanoPhotonics Centre, Cavendish Laboratory, University of Cambridge , Cambridge, CB3 0HE, United Kingdom
| | - M-E Kleemann
- NanoPhotonics Centre, Cavendish Laboratory, University of Cambridge , Cambridge, CB3 0HE, United Kingdom
| | - C Tserkezis
- Centro de Física de Materiales, Centro Mixto CSIC-UPV/EHU, and Donostia International Physics Center (DIPC), Paseo Manuel Lardizabal 4, 20018 Donostia-San Sebastian, Spain
| | - Y Shi
- Pillar of Engineering Product Development, Singapore University of Technology and Design , Singapore 138682, Singapore
| | - H Y Yang
- Pillar of Engineering Product Development, Singapore University of Technology and Design , Singapore 138682, Singapore
| | - O Hess
- Blackett Laboratory, Department of Physics, Imperial College London , London SW7 2AZ, United Kingdom
| | - J Aizpurua
- Centro de Física de Materiales, Centro Mixto CSIC-UPV/EHU, and Donostia International Physics Center (DIPC), Paseo Manuel Lardizabal 4, 20018 Donostia-San Sebastian, Spain
| | - J J Baumberg
- NanoPhotonics Centre, Cavendish Laboratory, University of Cambridge , Cambridge, CB3 0HE, United Kingdom
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Benz F, Cai J, Nerland D, Hurst H. Evaluation of a biomarker for assessment of acute acrylonitrile exposure in humans. Toxicol Lett 2012. [DOI: 10.1016/j.toxlet.2012.03.190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Benz F, Cai J, Nerland D, Hurst H, Pierce W. Acrylonitrile, adduct, mass spectrometry, biomarker, toxic industrial chemicals. Toxicol Lett 2010. [DOI: 10.1016/j.toxlet.2010.03.173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Benz F. Untersuchungen über einige chemische und physiologische Eigenschaften der gonadotropen Wirkstoffe. Helv Chim Acta 2004. [DOI: 10.1002/hlca.19410240224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Karrer P, Salomon H, Schöpp K, Benz F, Becker B. Synthesen von drei weiteren Stereoisomeren des Lactoflavins (VI. Mitteilung über Flavinsynthesen). Helv Chim Acta 2004. [DOI: 10.1002/hlca.193501801119] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Benz F, Liersch M, Nüesch J, Treichler HJ. Methionine metabolism and cephalosporin C synthesis in Cephalosporium acremonium. D-amino acid oxidase. Eur J Biochem 1971; 20:81-8. [PMID: 4397084 DOI: 10.1111/j.1432-1033.1971.tb01365.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Karrer P, Benz F, Morf R, Raudnitz H, Stoll M, Takahashi T. Pflanzenfarbstoffe XLVI. Konstitution des Crocetins und Bixins. Synthese des Perhydro-norbixins. Helv Chim Acta 1932. [DOI: 10.1002/hlca.193201501167] [Citation(s) in RCA: 32] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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