ClpXP, an ATP-powered unfolding and protein-degradation machine.
ClpXP, an ATP-powered unfolding and protein-degradation machine.
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DOI:
10.1016/j.bbamcr.2011.06.007
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发表时间:
2012-01
期刊:
影响因子:
--
通讯作者:
Sauer RT
中科院分区:
文献类型:
--
作者:
Baker TA;Sauer RT
ClpXP is a AAA+ protease that uses the energy of ATP binding and hydrolysis to perform mechanical work during targeted protein degradation within cells. ClpXP consists of hexamers of a AAA+ ATPase (ClpX) and a tetradecameric peptidase (ClpP). Asymmetric ClpX hexamers bind unstructured peptide tags in protein substrates, unfold stable tertiary structure in the substrate, and then translocate the unfolded polypeptide chain into an internal proteolytic compartment in ClpP. Here, we review our present understanding of ClpXP structure and function, as revealed by two decades of biochemical and biophysical studies.
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