Search Results - "AMSTER, I. J"

Sulfur Transfer from IscS to IscU:  The First Step in Iron−Sulfur Cluster Biosynthesis by Smith, Archer D, Agar, Jeffrey N, Johnson, Keith A, Frazzon, Jeverson, Amster, I. Jonathan, Dean, Dennis R, Johnson, Michael K

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Routine Part-per-Million Mass Accuracy for High- Mass Ions:  Space-Charge Effects in MALDI FT-ICR by Easterling, Michael L, Mize, Todd H, Amster, I. Jonathan

“…The effect of ion space-charge on mass accuracy in Fourier transform ion cyclotron resonance mass spectrometry is examined. Matrix-assisted laser…”
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Probing the Stoichiometry and Oxidation States of Metal Centers in Iron−Sulfur Proteins Using Electrospray FTICR Mass Spectrometry by Johnson, Keith A, Verhagen, Marc F. J. M, Brereton, Phillip S, Adams, Michael W. W, Amster, I. Jonathan

“…Electrospray ionization (ESI) Fourier transform ion cyclotron resonance mass spectrometry is used to determine the stoichiometry and oxidation states of the…”
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Broad-Band Ion Accumulation with an Internal Source MALDI-FTICR-MS by Mize, Todd H, Amster, I. Jonathan

“…A new method is described which allows a broad mass range of ions from multiple MALDI events to be accumulated in an FTICR analyzer cell prior to detection…”
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Monitoring Protein Expression in Whole Bacterial Cells with MALDI Time-of-Flight Mass Spectrometry by Easterling, Michael L, Colangelo, Christopher M, Scott, Robert A, Amster, I. Jonathan

“…We report the application of matrix-assisted laser desorption ionization (MALDI) to monitor recombinant protein expression in whole bacteria. This technique is…”
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The unexpected formation of [M − H]+ species during MALDI and dopant-free APPI MS analysis of novel antineoplastic curcumin analogues by Awad, H., Stoudemayer, M. J., Usher, L., Amster, I. J., Cohen, A., Das, U., Whittal, R. M., Dimmock, J., El-Aneed, A.

“…Unusual ionization behavior was observed with novel antineoplastic curcumin analogues during the positive ion mode of matrix‐assisted laser desorption…”
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Proton affinities of the 20 common .alpha.-amino acids by Gorman, Greg S, Speir, J. Paul, Turner, Cheryl A, Amster, I. Jonathan

“…We report the first measurement of the gas-phase basicities (- Delta G of protonation) of all of the 20 common alpha -amino acids, from which we can derive…”
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Chemical and On-Line Electrochemical Reduction of Metalloproteins with High-Resolution Electrospray Ionization Mass Spectrometry Detection by Johnson, Keith A, Shira, Brian A, Anderson, James L, Amster, I. Jonathan

“…The observation of the reduced forms of several metal-containing proteins using electrospray ionization (ESI) is reported for the first time. High-resolution…”
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Isotope beating effects in the analysis of polymer distributions by Fourier transform mass spectrometry by Easterling, Michael L., Amster, I.Jonathan, van Rooij, Gerard J., Heeren, Ron M.A.

“…For Fourier transform mass spectrometry analysis of high mass ions, the signals from closely spaced isotope peaks undergo periodic destructive interference,…”
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Electrospray Mass Spectrometry Studies of Non-Heme Iron-Containing Proteins by Lei, Qing Paula, Cui, Xiaoyuan, Kurtz, Donald M, Amster, I. Jonathan, Chernushevich, Igor V, Standing, Kenneth G

“…The oligomeric state and the metal atom stoichiometry of a series of non-heme iron-containing, multimeric proteins have been measured using electrospray…”
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Remeasurement of ions using quadrupolar excitation Fourier transform ion cyclotron resonance spectrometry by Speir, J. Paul, Gorman, Greg S, Pitsenberger, Cynthia C, Turner, Cheryl A, Wang, Ping P, Amster, I. Jonathan

“…Ions formed by a single laser desorption event can be remeasured more than 500 times in a Fourier transform ion cyclotron resonance spectrometer. Quadrupolar…”
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Identification of Photogenerated Intermediates by Electrospray Ionization Mass Spectrometry by Ding, Wei, Johnson, Keith A, Amster, I. Jonathan, Kutal, Charles

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Fourier Transform Mass Spectrometry by Amster, I. Jonathan

“…The fundamental principles of Fourier transform mass spectrometry (FTMS) are presented. The motion of ions in a FTMS analyzer can be understood in terms of the…”
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Photoinduced polymerization of solid C60 films by RAO, A. M, PING ZHOU, DUNCAN, M. A, AMSTER, I. J, KAI-AN WANG, HAGER, G. T, HOLDEN, J. M, YING WANG, LEE, W.-T, XIANG-XIN BI, EKLUND, P. C, CORNETT, D. S

“…The irradiation of oxygen-free, face-centered-cubic [C.sub.60] films with visible or ultraviolet light phototransformed [C.sub.60] into a different solid…”
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Peptide Mixture Sequencing by Tandem Fourier-Transform Mass Spectrometry by Cody, Robert B., Amster, I. Jonathan, McLafferty, Fred W.

“…Picomole samples of the linear peptide gramicidin D and cyclic peptide gramicidin S are shown to be impure by the laser-desorption formation of multiple groups…”
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A Gallium-Substituted Cubane-Type Cluster in Pyrococcus furiosus Ferredoxin by JOHNSON, Keith A., BRERETON, Phillip S., VERHAGEN, Marc F. J. M., CALZOLAI, Luigi, LA MAR, Gerd N., ADAMS, Michael W. W., AMSTER, I. Jonathan

“…Iron-sulfur (Fe-S) clusters are ubiquitous in nature and play a variety of roles including electron transfer and catalysis. One of the best studied is the…”
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Photoinduced Polymerization of Solid C 60 Films by Rao, A. M., Zhou, Ping, Wang, Kai-An, Hager, G. T., Holden, J. M., Wang, Ying, Lee, W.-T., Bi, Xiang-Xin, Eklund, P. C., Cornett, D. S., Duncan, M. A., Amster, I. J.

“…The irradiation of oxygen-free, face-centered-cubic C 60 films with visible or ultraviolet light phototransformed C 60 into a different solid phase. Results…”
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Efficient Ion Remeasurement Using Broadband Quadrupolar Excitation FTICR Mass Spectrometry by Pitsenberger, Cynthia C, Easterling, Michael L, Amster, I. Jonathan

“…Quadrupolar excitation is achieved over a wide mass range by using repetitive chirp excitation, filtered noise excitation, and high-amplitude, single-frequency…”
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Protein molecular weight determinations by MALD mass spectrometry: a superior alternative to gel filtration by Smith, E T, Cornett, D S, Amster, I J, Adams, M W

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Chemical ionization of laser-desorbed neutrals in a Fourier-transform mass spectrometer by Amster, I. Jonathan, Land, Donald P, Hemminger, John C, McIver, Robert T

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