Electrospray-assisted laser desorption ionization mass spectrometry (ELDI-MS) with an infrared laser for characterizing peptides and proteins.
Electrospray-assisted laser desorption ionization mass spectrometry (ELDI-MS) with an infrared laser for characterizing peptides and proteins.
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DOI:
10.1039/b923303b
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发表时间:
2010-04
期刊:
影响因子:
--
通讯作者:
Loo JA
中科院分区:
文献类型:
--
作者:
Peng IX;Ogorzalek Loo RR;Margalith E;Little MW;Loo JA
An electrospray-assisted laser desorption/ionization source with an infrared OPO laser (IR-ELDI) was constructed and optimized for peptide and protein mass spectrometry analysis. Similar to ELDI with an ultraviolet laser, IR-ELDI generates multiply charged molecules for peptides and proteins measured under ambient sampling conditions. Both samples in the dried state and analyte solutions can be directly measured by IR-ELDI without the presence of a conventional MALDI matrix. However, the analysis of sample solutions is shown to greatly enhance the sensitivity of the mass spectrometry measurement, as a 100-fold sensitivity gain for peptide measurements was measured. The limit of detection of IR-ELDI was determined to be 250 fmol for bradykinin (1.1 kDa), 100 fmol for ubiquitin (8.6 kDa), and 500 fmol for carbonic anhydrase (29 kDa). IR-ELDI is amenable for MS and MSn analysis for proteins up to 80 kDa transferrin. IR-ELDI-MS may be a useful tool for protein sequencing analysis from complex biological matrices, with minimal sample preparation required.
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影响因子:
2
作者:
Huang, Min-Zong;Hsu, Hsiu-Jung;Shiea, Jentaie
通讯作者:
Shiea, Jentaie
影响因子:
2.9
作者:
Loo, RRO;Mitchell, C;Andrews, PC
通讯作者:
Andrews, PC
DOI:
10.1073/pnas.93.14.7003
发表时间:
1996-07-09
影响因子:
11.1
作者:
Berkenkamp, S;Karas, M;Hillenkamp, F
通讯作者:
Hillenkamp, F
DOI:
10.1002/oms.1210281241
发表时间:
1993-12-01
期刊:
ORGANIC MASS SPECTROMETRY
影响因子:
--
作者:
LOO, JA;LOO, RRO;ANDREWS, PC
通讯作者:
ANDREWS, PC
DOI:
10.1016/s1044-0305(97)00236-5
发表时间:
1998-01-01
影响因子:
3.2
作者:
Niu, SF;Zhang, WZ;Chait, BT
通讯作者:
Chait, BT