Rapid LC-MS Method for Accurate Molecular Weight Determination of Membrane and Hydrophobic Proteins.
Rapid LC-MS Method for Accurate Molecular Weight Determination of Membrane and Hydrophobic Proteins.
复制标题
用于准确测定膜和疏水蛋白分子量的快速 LC-MS 方法。
DOI:
10.1021/acs.analchem.8b03843
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发表时间:
2018
影响因子:
7.4
通讯作者:
Campuzano,IainDG
中科院分区:
文献类型:
--
作者:
Lippens,JenniferL;Egea,PascalF;Spahr,Chris;Vaish,Amit;Keener,JamesE;Marty,MichaelT;Loo,JosephA;Campuzano,IainDG
Therapeutic target characterization involves many components, including accurate molecular weight (MW) determination. Knowledge of the accurate MW allows one to detect the presence of post-translational modifications, proteolytic cleavages, and importantly, if the correct construct has been generated and purified. Denaturing liquid chromatography–mass spectrometry (LC–MS) can be an attractive method for obtaining this information. However, membrane protein LC–MS methodology has remained relatively under-explored and under-incorporated in comparison to methods for soluble proteins. Here, systematic investigation of multiple gradients and column chemistries has led to the development of a 5 min denaturing LC–MS method for acquiring membrane protein accurate MW measurements. Conditions were interrogated with membrane proteins, such as GPCRs and ion channels, as well as bispecific antibody constructs of variable sizes with the aim to provide the community with rapid LC–MS methods necessary to obtain chromatographic and accurate MW measurements in a medium- to high-throughput manner. The 5 min method detailed has successfully produced MW measurements for hydrophobic proteins with a wide MW range (17.5 to 105.3 kDa) and provided evidence that some constructs indeed contain unexpected modifications or sequence clipping. This rapid LC–MS method is also capable of baseline separating formylated and nonformylated aquaporinZ membrane protein.
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影响因子:
11.2
作者:
Carter,GL;Cory,JG
通讯作者:
Cory,JG
影响因子:
4.8
作者:
A. U.S.;Ei;Graham J. Mann;Lars Thelandern
通讯作者:
Lars Thelandern
影响因子:
7.4
作者:
N. Scott;D. E. Carter;Q. Fernando
通讯作者:
Q. Fernando
DOI:
10.1016/s0021-9258(18)43628-9
发表时间:
1980
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
L. Petersson;A. Gräslund;A. Ehrenberg;B. Sjöberg;P. Reichard
通讯作者:
P. Reichard
DOI:
10.1007/bf01534695
发表时间:
1987
期刊:
Somatic Cell and Molecular Genetics
影响因子:
--
作者:
J. Wright;Tawfiq G. Alam;G. McClarty;A. Tagger;L. Thelander
通讯作者:
L. Thelander