Quality control and substrate-dependent downregulation of the nutrient transporter Fur4.
Quality control and substrate-dependent downregulation of the nutrient transporter Fur4.
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DOI:
10.1111/tra.12039
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发表时间:
2013-04
期刊:
影响因子:
--
通讯作者:
Babst M
中科院分区:
文献类型:
--
作者:
Keener JM;Babst M
Upon exposure to stress conditions, unfolded cell-surface nutrient transporters are rapidly internalized and degraded via the multivesicular body (MVB) pathway. Similarly, high concentrations of nutrients result in the downregulation of the corresponding transporters. Our studies using the yeast transporter Fur4 revealed that substrate-induced downregulation and quality control utilize a common mechanism. This mechanism is based on a conformation-sensing domain, termed LID (Loop Interaction Domain), that regulates site-specific ubiquitination (also known as degron). Conformational alterations in the transporter induced by unfolding or substrate binding are transmitted to the LID, rendering the degron accessible for ubiquitination by Rsp5. As a consequence, the transporter is rapidly degraded. We propose that the LID-degron system is a conserved, chaperone-independent mechanism responsible for conformation-induced downregulation of many cell-surface transporters under physiological and pathological conditions.
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DOI:
10.1126/science.1191542
发表时间:
2010-08-13
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Okiyoneda T;Barrière H;Bagdány M;Rabeh WM;Du K;Höhfeld J;Young JC;Lukacs GL
通讯作者:
Lukacs GL
影响因子:
7.8
作者:
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通讯作者:
Yaffe, M P
影响因子:
3.3
作者:
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Kaiser CA
影响因子:
4.8
作者:
Marchal, C;Haguenauer-Tsapis, R;Urban-Grimal, D
通讯作者:
Urban-Grimal, D
影响因子:
3.7
作者:
Merhi A;Gérard N;Lauwers E;Prévost M;André B
通讯作者:
André B