CF-252-PLASMA DESORPTION MASS-SPECTROMETRY APPLIED TO THE ANALYSIS OF ENDOTOXIN LIPID-A PREPARATIONS

被引:29
作者
KARIBIAN, D [1 ]
DEPRUN, C [1 ]
SZABO, L [1 ]
LEBEYEC, Y [1 ]
CAROFF, M [1 ]
机构
[1] INST PHYS NUCL, EQUIPE INTERACT ION SURFACES & MAT, F-91406 ORSAY, FRANCE
关键词
D O I
10.1016/0168-1176(91)85060-Y
中图分类号
O64 [物理化学(理论化学)、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号
070203 ; 070304 ; 081704 ; 1406 ;
摘要
Negative-ion plasma desorption mass spectra of underivatized Lipid A preparations, isolated from the endotoxins of 16 Enterobacterial and non-Enterobacterial strains, are presented. These heterogeneous preparations gave signals-in the range m/z 1000-2200-characteristic of the bacterial family from which the Lipid A was obtained. Molecular compositions based on chemical analyses were attributed to the most abundant ions. The information provided makes plasma desorption mass spectrometry a powerful tool in relating Lipid A structures to their numerous biological activities. The method is rapid and requires only microgram quantities of Lipid A.
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页码:273 / 286
页数:14
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