Elucidating the catalytic subunit composition of distinct proteasome subtypes: a crosslinking approach employing bifunctional activity-based probes.
Elucidating the catalytic subunit composition of distinct proteasome subtypes: a crosslinking approach employing bifunctional activity-based probes.
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阐明不同蛋白酶体亚型的催化亚基组成:采用基于双功能活性的探针的交联方法。
DOI:
10.1002/cbic.201402491
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发表时间:
2015-01-19
期刊:
影响因子:
3.2
通讯作者:
Kim, Kyung-Bo
中科院分区:
文献类型:
--
作者:
Carmony, Kimberly Cornish;Sharma, Lalit Kumar;Lee, Do-Min;Park, Ji Eun;Lee, Wooin;Kim, Kyung-Bo
关键词:
In addition to two well-recognized proteasome subtypes—constitutive proteasomes and immunoproteasomes—mounting evidence also suggests the existence of intermediate proteasome subtypes containing unconventional mixtures of catalytic subunits. While they appear to play unique biological roles, the lack of practical methods for detecting distinct proteasome subtypes has limited functional investigations. Here, we report the development of activity-based probes that crosslink two catalytic subunits within intact proteasome complexes. Identification of the crosslinked subunit pairs provides direct evidence on the catalytic subunit composition of proteasomes. Using these probes, we found that U266 multiple myeloma cells contain intermediate proteasomes comprising both β1i and β2, but not β1 and β2i, consistent with previous findings with other cell types. Our bifunctional probes can be utilized in functional investigations of distinct proteasome subtypes in various biological settings.
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影响因子:
3.6
作者:
Driscoll, James J.;Woodle, E. Steve
通讯作者:
Woodle, E. Steve
影响因子:
100.3
作者:
Groettrup, Marcus;Kirk, Christopher J.;Basler, Michael
通讯作者:
Basler, Michael
影响因子:
7
作者:
Fabre, Bertrand;Lambour, Thomas;Bousquet-Dubouch, Marie-Pierre
通讯作者:
Bousquet-Dubouch, Marie-Pierre
DOI:
10.1084/jem.187.1.97
发表时间:
1998-01-05
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Griffin TA;Nandi D;Cruz M;Fehling HJ;Kaer LV;Monaco JJ;Colbert RA
通讯作者:
Colbert RA
影响因子:
64.8
作者:
Groll, M;Ditzel, L;Huber, R
通讯作者:
Huber, R