Publication Date:
1989-10-06
Description:
Electrospray ionization has recently emerged as a powerful technique for producing intact ions in vacuo from large and complex species in solution. To an extent greater than has previously been possible with the more familiar "soft" ionization methods, this technique makes the power and elegance of mass spectrometric analysis applicable to the large and fragile polar molecules that play such vital roles in biological systems. The distinguishing features of electrospray spectra for large molecules are coherent sequences of peaks whose component ions are multiply charged, the ions of each peak differing by one charge from those of adjacent neighbors in the sequence. Spectra have been obtained for biopolymers including oligonucleotides and proteins, the latter having molecular weights up to 130,000, with as yet no evidence of an upper limit.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fenn, J B -- Mann, M -- Meng, C K -- Wong, S F -- Whitehouse, C M -- New York, N.Y. -- Science. 1989 Oct 6;246(4926):64-71.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Chemical Engineering Department, Yale University, New Haven, CT 06520.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2675315" target="_blank"〉PubMed〈/a〉
Keywords:
Ions
;
Mass Spectrometry/*methods
;
Molecular Weight
;
Proteins/*analysis
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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