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Institution

Applied Biosystems

About: Applied Biosystems is a based out in . It is known for research contribution in the topics: Mass spectrometry & Capillary electrophoresis. The organization has 1521 authors who have published 1579 publications receiving 285423 citations.


Papers
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Journal ArticleDOI
TL;DR: The LC-MS/MS method is sufficiently simple and reliable enough to replace the currently used HPLC method with fluorescence detection in which putrescine is not always detectable.

43 citations

Journal ArticleDOI
TL;DR: In this paper, the prototypical a(2) ion generated from protonated triglycine is predominantly a cyclic N-1-protonated 4-imidazolidinone.
Abstract: Fragmentation of protonated peptides in the gas phase constitutes the basis for gas-phase sequencing of peptides using tandem mass spectrometry. Several mechanistic studies have indicated possible loss of b(n) ion sequence information as a consequence of macrocycle formation from internal nucleophilic attacks. Here, we show by infrared multiple-photon dissociation spectroscopy and density functional theory that the prototypical a(2) ion generated from protonated triglycine is predominantly a cyclic N-1-protonated 4-imidazolidinone. Cyclization resulting from internal nucleophilic attacks therefore may be a more general phenomenon than anticipated.

43 citations

Journal ArticleDOI
TL;DR: The feasibility of MALDI MS/MS with off-line coupling to HPLC for the analysis of whole cell lysates of wild-type yeast by three different workflows is demonstrated and the effect of a workflow on the end results in terms of the number of proteins detected, the average peptide coverage of proteins, and thenumber of redundant peptide sequencing attempts is demonstrated.
Abstract: Large-scale proteomic analyses frequently rely on high-resolution peptide separation of digested protein mixtures in multiple dimensions to achieve accuracy in sample detection and sensitivity in dynamic range of coverage. This study was undertaken to demonstrate the feasibility of MALDI MS/MS with off-line coupling to HPLC for the analysis of whole cell lysates of wild-type yeast by three different workflows: SCX-RPHPLC-MS/MS, high-pH SAX-RPHPLC-MS/MS and RP (protein)-SCX-RPHPLC-MS/MS. The purpose of these experiments was to demonstrate the effect of a workflow on the end results in terms of the number of proteins detected, the average peptide coverage of proteins, and the number of redundant peptide sequencing attempts. Using 60 microg of yeast lysate, minor differences were seen in the number of proteins detected by each method (800-1200). The most significant differences were observed in redundancy of MS/MS acquisitions.

43 citations

Patent
18 Aug 2010
TL;DR: In this article, a microplate can comprise a first surface and an opposing second surface, and a plurality of wells can be formed in the first surface of the microplate, each of which can be sized to receive an assay therein.
Abstract: A vacuum assist apparatus can comprise a microplate. The microplate can comprise a first surface and an opposing second surface. A plurality of wells can be formed in the first surface of the microplate. Each of the plurality of wells can be sized to receive an assay therein. A support base can comprise a fluid passage. The microplate can be positioned adjacent and in contact with the support base. A pressure device, in fluid communication with the fluid passage, can exert a vacuum within the fluid passage to actively retain the microplate in the contact with the support base.

43 citations


Authors

Showing all 1521 results

NameH-indexPapersCitations
Richard A. Gibbs172889249708
Friedrich C. Luft113109547619
Alexander N. Glazer7120821068
Vineet Bafna6823642574
Kevin R. Coombes6330823592
Darryl J. Pappin6117029409
Mark D. Johnson6028916103
György Marko-Varga5640912600
Paul Thomas5612844810
Gerald Zon5525611126
Michael W. Hunkapiller5113029756
Bjarni V. Halldorsson5114513180
David H. Hawke501579824
Ellson Y. Chen507128836
Sridhar Hannenhalli4916221959
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20182
20171
20164
20152
20147
201313