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Dunn AL, Leitch DC, Journet M, Martin M, Tabet EA, Curtis NR, Williams G, Goss C, Shaw T, O’Hare B, Wade C, Toczko MA, Liu P. Selective Continuous Flow Iodination Guided by Direct Spectroscopic Observation of Equilibrating Aryl Lithium Regioisomers. Organometallics 2019. [DOI: 10.1021/acs.organomet.8b00538] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Anna L. Dunn
- API Chemistry, GlaxoSmithKline, King of Prussia, Pennsylvania 19406, United States
| | - David C. Leitch
- API Chemistry, GlaxoSmithKline, King of Prussia, Pennsylvania 19406, United States
| | - Michel Journet
- API Chemistry, GlaxoSmithKline, King of Prussia, Pennsylvania 19406, United States
| | - Michael Martin
- Early Development Sciences, GlaxoSmithKline, Research Triangle Park, North Carolina 27709, United States
| | - Elie A. Tabet
- Early Development Sciences, GlaxoSmithKline, Research Triangle Park, North Carolina 27709, United States
| | | | | | - Charles Goss
- Process Analytical Technologies, GlaxoSmithKline, King of Prussia, Pennsylvania 19406, United States
| | - Tony Shaw
- API Chemistry, GlaxoSmithKline, King of Prussia, Pennsylvania 19406, United States
| | - Bernie O’Hare
- Global Spectroscopy, GlaxoSmithKline, King of Prussia, Pennsylvania 19406, United States
| | - Charles Wade
- API Chemistry, GlaxoSmithKline, Stevenage, U.K. SG1 2NY
| | - Matthew A. Toczko
- Early Development Sciences, GlaxoSmithKline, Research Triangle Park, North Carolina 27709, United States
| | - Peng Liu
- API Chemistry, GlaxoSmithKline, King of Prussia, Pennsylvania 19406, United States
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Guo C, Hou G, Lu X, O’Hare B, Struppe J, Polenova T. Fast magic angle spinning NMR with heteronucleus detection for resonance assignments and structural characterization of fully protonated proteins. J Biomol NMR 2014; 60:219-229. [PMID: 25381566 PMCID: PMC4282927 DOI: 10.1007/s10858-014-9870-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2014] [Accepted: 10/25/2014] [Indexed: 06/04/2023]
Abstract
Heteronucleus-detected dipolar based correlation spectroscopy is established for assignments of ¹H, ¹³C, and ¹⁵N resonances and structural analysis in fully protonated proteins. We demonstrate that ¹³C detected 3D experiments are highly efficient and permit assignments of the majority of backbone resonances, as shown in an 89-residue dynein light chain 8, LC8 protein. With these experiments, we have resolved many ambiguities that were persistent in our previous studies using moderate MAS frequencies and lacking the ¹H dimension. The availability of ¹H isotropic chemical shifts measured with the heteronucleus-detected fast-MAS experiments presented here is essential for the accurate determination of the ¹H CSA tensors, which provide very useful structural probe. Finally, our results indicate that ¹³C detection in fast-MAS HETCOR experiments may be advantageous compared with ¹H detection as it yields datasets of significantly higher resolution in the ¹³C dimension than the ¹H detected HETCOR versions.
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Affiliation(s)
- Changmiao Guo
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE 19716, United States
| | - Guangjin Hou
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE 19716, United States
| | - Xingyu Lu
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE 19716, United States
| | - Bernie O’Hare
- Bruker Biospin Corp., Billerica, MA 01821, United States
| | - Jochem Struppe
- Bruker Biospin Corp., Billerica, MA 01821, United States
| | - Tatyana Polenova
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE 19716, United States
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Jin H, O’Hare B, Dong J, Arzhantsev S, Baker GA, Wishart JF, Benesi AJ, Maroncelli M. Physical Properties of Ionic Liquids Consisting of the 1-Butyl-3-methylimidazolium Cation with Various Anions and the Bis(trifluoromethylsulfonyl)imide Anion with Various Cations. J Phys Chem B 2010. [DOI: 10.1021/jp108563p] [Citation(s) in RCA: 13] [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: 11/29/2022]
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