Results 21 to 30 of about 544,006 (376)

Comprehensive biothreat cluster identification by PCR/electrospray-ionization mass spectrometry. [PDF]

open access: yesPLoS ONE, 2012
Technology for comprehensive identification of biothreats in environmental and clinical specimens is needed to protect citizens in the case of a biological attack.
Rangarajan Sampath   +26 more
doaj   +1 more source

Desorption Electrospray Ionization-Mass Spectrometry of Proteins [PDF]

open access: yesAnalytical Chemistry, 2007
Desorption electrospray ionization-mass spectrometry (DESI-MS) was evaluated for the detection of proteins ranging in molecular mass from 12 to 66 kDa. Proteins were uniformly deposited on a solid surface without pretreatment and analyzed with a DESI source coupled to a quadrupole ion trap mass spectrometer.
Richard T. Mayer   +4 more
openaire   +3 more sources

Is Charge Reduction in ESI Really Necessary? [PDF]

open access: yes, 2008
The technique of charge reduction electrospray mass spectrometry (CREMS), which can reduce the charge state complexity produced in electrospray ionization (ESI), is ...
Smith, Lloyd M.
core   +1 more source

Analysis of Oligonucleotides by Electrospray Ionization Mass Spectrometry [PDF]

open access: yesCurrent Protocols in Nucleic Acid Chemistry, 2000
AbstractBecause of the high molecular weights and thermal lability of biomolecules such as nucleic acids and protein, they can be difficult to analyze by mass spectrometry. Such analyses require a “soft” ionization method that is capable of generating intact molecular ions.
Polo, Lenore M., Limbach, Patrick A.
openaire   +4 more sources

Structure elucidation of sildenafil analogues in herbal products. [PDF]

open access: yes, 2004
The structure of unknown compounds present in herbal products was elucidated using liquid chromatography-electrospray ionization-mass spectrometry, direct-infusion electrospray ionization-mass spectrometry, and nuclear magnetic resonance.
Bakker, F   +7 more
core   +1 more source

Estudo por espectrometria de massas de soluções de hidróxi(tosilóxi)iodobenzeno: propostas para mecanismos de desproporção

open access: yesQuímica Nova, 2012
Solutions of [hydroxy(tosyloxy)iodo]benzene (HTIB or Koser's reagent) in acetonitrile were analyzed using high resolution electrospray ionization mass spectrometry (ESI-MS) and electrospray ionization tandem mass spectrometry (ESI-MS/MS) under different ...
Ramon S. Vasconcelos   +2 more
doaj   +1 more source

False positives and the detection of cyclodextrin inclusion complexes by electrospray mass spectrometry [PDF]

open access: yes, 1995
The results of previous works that have claimed to detect cyclodextrin inclusion complexes via the “soft” ionization technique of electrospray ionization mass spectrometry are revisited.
Cunniff, John B., Vouros, Paul
core   +1 more source

Liquid chromatography-tandem mass spectrometry - Application in the clinical laboratory [PDF]

open access: yes, 2003
This review provides a concise survey of liquid chromatography tandem mass spectrometry (LCTMS) as an emerging technology in clinical chemistry. The combination of two mass spectrometers with an interposed collision cell characterizes LCTMS as an ...
Ford RE   +7 more
core   +1 more source

Native Mass Spectrometry and Nucleic Acid G-Quadruplex Biophysics: Advancing Hand in Hand [PDF]

open access: yesAccounts of Chemical Research, 2021, 54 (19), pp.3691-3699, 2023
While studying nucleic acids to reveal the weak interactions responsible for their three-dimensional structure and for their interactions with drugs, we also contributed to the field of biomolecular mass spectrometry, both in terms of fundamental understanding and with new methodological developments.
arxiv   +1 more source

Probing metal ion binding and conformational properties of the colicin E9 endonuclease by electrospray ionization time-of-flight mass spectrometry [PDF]

open access: yes, 2002
Nano-electrospray ionization time-of-flight mass spectrometry (ESI-MS) was used to study the conformational consequences of metal ion binding to the colicin E9 endonuclease (E9 DNase) by taking advantage of the unique capability of ESI-MS to allow ...
HECK, ALBERT J.R.   +6 more
core   +3 more sources

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