J L Beauchamp
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Explore the profile of J L Beauchamp including associated specialties, affiliations and a list of published articles.
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55
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504
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Recent Articles
1.
Fabijanczuk K, Gaspar K, Desai N, Lee J, Thomas D, Beauchamp J, et al.
Anal Chem
. 2019 Nov;
91(24):15387-15396.
PMID: 31718152
By combining the merits of solid supports and free radical activated glycan sequencing (FRAGS) reagents, we develop a multifunctional solid-supported free radical probe (SS-FRAGS) that enables glycan enrichment and characterization....
2.
Mu C, Wang J, Barraza K, Zhang X, Beauchamp J
Angew Chem Int Ed Engl
. 2019 Apr;
58(24):8082-8086.
PMID: 31016864
Even though the general mechanism of photodynamic cancer therapy is known, the details and consequences of the reactions between the photosensitizer-generated singlet oxygen and substrate molecules remain elusive at the...
3.
Zhang X, Barraza K, Upton K, Beauchamp J
J Am Chem Soc
. 2018 Nov;
140(50):17492-17498.
PMID: 30461271
Nature carefully designs the components of amphiphile-composed monolayer and bilayer membranes to deliver specific functions. The compositions of these interfacial layered structures are so delicate that minute modifications can result...
4.
Desai N, Thomas D, Lee J, Gao J, Beauchamp J
Chem Sci
. 2018 Aug;
7(8):5390-5397.
PMID: 30155192
Mass spectrometric glycan rearrangement is problematic because it provides misleading structural information. Here we report on a new reagent, a methylated free radical activated glycan sequencing reagent (Me-FRAGS), which combines...
5.
Huang Y, Barraza K, Kenseth C, Zhao R, Wang C, Beauchamp J, et al.
J Phys Chem A
. 2018 Jul;
122(31):6445-6456.
PMID: 30011201
Gas and aqueous phases are essential media for atmospheric chemistry and aerosol formation. Numerous studies have focused on aqueous-phase reactions as well as coupled gas/aqueous-phase mass transport and reaction. Few...
6.
Zhang X, Barraza K, Beauchamp J
Proc Natl Acad Sci U S A
. 2018 Mar;
115(13):3255-3260.
PMID: 29507237
The role of cholesterol in bilayer and monolayer lipid membranes has been of great interest. On the biophysical front, cholesterol significantly increases the order of the lipid packing, lowers the...
7.
Sohn C, Gao J, Thomas D, Kim T, Goddard Iii W, Beauchamp J
Chem Sci
. 2017 Nov;
6(8):4550-4560.
PMID: 29142703
We investigate the mechanism of disulfide bond cleavage in gaseous peptide and protein ions initiated by a covalently-attached regiospecific acetyl radical using mass spectrometry (MS). Highly selective S-S bond cleavages...
8.
Thomas D, Coggon M, Lignell H, Schilling K, Zhang X, Schwantes R, et al.
Environ Sci Technol
. 2016 Oct;
50(22):12241-12249.
PMID: 27731989
The complexation of iron(III) with oxalic acid in aqueous solution yields a strongly absorbing chromophore that undergoes efficient photodissociation to give iron(II) and the carbon dioxide anion radical. Importantly, iron(III)...
9.
Sohn C, Yin S, Peng I, Loo J, Beauchamp J
Int J Mass Spectrom
. 2016 Jun;
390:49-55.
PMID: 27275130
The mechanisms of electron capture and electron transfer dissociation (ECD and ETD) are investigated by covalently attaching a free-radical hydrogen atom scavenger to a peptide. The 2,2,6,6-tetramethylpiperidin-l-oxyl (TEMPO) radical was...
10.
Thomas D, Wang L, Goh B, Kim E, Beauchamp J
Anal Chem
. 2015 Feb;
87(6):3336-44.
PMID: 25699657
The complex chemistry occurring at the interface between liquid and vapor phases contributes significantly to the dynamics and evolution of numerous chemical systems of interest, ranging from damage to the...