Roles of Fe-S proteins: from cofactor synthesis to iron homeostasis to protein synthesis.

Roles of Fe-S proteins: from cofactor synthesis to iron homeostasis to protein synthesis.
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DOI:
10.1016/j.gde.2016.03.006
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发表时间:
2016-06
影响因子:
4
通讯作者:
Dancis, Andrew
Dancis, Andrew
中科院分区:
生物学2区
文献类型:
--
作者:
Pain, Debkumar;Dancis, Andrew

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Fe-S团簇组装是所有细胞必不可少的过程。Fe-S簇组装的损害以各种各样和令人惊讶的方式产生疾病。在一种情况下,硫辛酸合酶(一种在线粒体中具有Fe-S簇辅因子的酶)功能的丧失损害了各种硫辛酰胺依赖性酶的活性,对代谢产生严重后果。在第二种情况下,红细胞前体中的血红素生物合成途径被特异性靶向,铁稳态被扰乱,但硫辛酸不受影响。在第三种情况下,由半胱氨酸脱硫酶和/或Fe-S簇蛋白的作用引起的tRNA修饰丢失,这可能导致蛋白质合成受损。这可能导致癌症,神经功能障碍或2型糖尿病。
Fe-S cluster assembly is an essential process for all cells. Impairment of Fe-S cluster assembly creates diseases in diverse and surprising ways. In one scenario, the loss of function of lipoic acid synthase, an enzyme with Fe-S cluster cofactor in mitochondria, impairs activity of various lipoamide-dependent enzymes with drastic consequences for metabolism. In a second scenario, the heme biosynthetic pathway in red cell precursors is specifically targeted, and iron homeostasis is perturbed, but lipoic acid is unaffected. In a third scenario, tRNA modifications arising from action of the cysteine desulfurase and/or Fe-S cluster proteins are lost, which may lead to impaired protein synthesis. This can then result in cancer, neurologic dysfunction or type 2 diabetes.
与秀丽隐杆线虫延伸器突变体的神经和发育功能障碍相关的tRNA修饰缺陷。
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