Urea cycle regulation by mitochondrial sirtuin, SIRT5.

Urea cycle regulation by mitochondrial sirtuin, SIRT5.
复制标题

DOI:
10.18632/aging.100062
复制
发表时间:
2009-06-29
期刊:
Aging
影响因子:
--
通讯作者:
Guarente L
Guarente L
中科院分区:
其他
文献类型:
--
作者:
Nakagawa T;Guarente L

文献摘要

参考文献

被引文献

相似文献

哺乳动物 去乙酰化酶在衰老、代谢和疾病中具有不同的作用。最近我们 报道了SIRT 5在尿素循环调节中的新功能。我们的研究 发现SIRT5定位于线粒体基质, 氨甲酰磷酸合成酶1(CPS1),是第一种酶, 尿素循环的限速步骤。通过SIRT 5对CPS 1进行脱乙酰化, 激活CPS1酶活性。事实上,SIRT5缺陷小鼠 未能上调CPS1活性,并显示高氨血症, 斋戒.在高蛋白饮食或高热量饮食中也观察到类似的效果 限制.这些数据表明,SIRT5也有一个新兴的作用, 对禁食、高蛋白饮食和热量限制的代谢适应。
Mammalian sirtuins have diverse roles in aging, metabolism and disease. Recently we reported a new function for SIRT5 in urea cycle regulation. Our study uncovered that SIRT5 localized to mitochondria matrix and deacetylates carbamoyl phosphate synthetase 1 (CPS1), an enzyme which is the first and rate-limiting step of urea cycle. Deacetylation of CPS1 by SIRT5 resulted in activation of CPS1 enzymatic activity. Indeed, SIRT5-deficient mice failed to up-regulate CPS1 activity and showed hyper ammonemia during fasting. Similar effects are also observed on high protein diet or calorie restriction. These data indicate SIRT5 also has an emerging role in the metabolic adaptation to fasting, high protein diet and calorie restriction.
DOI: 10.1074/jbc.m901921200
发表时间: 2009-05-15
影响因子: 4.8
作者:
Yu, Wei;Lin, Yan;Guan, Kun-Liang
通讯作者: Guan, Kun-Liang
DOI: 10.1016/j.cell.2008.01.007
发表时间: 2008-01-25
期刊: CELL
影响因子: 64.5
作者:
Guarente, Leonard
通讯作者: Guarente, Leonard
DOI: 10.1074/jbc.m705488200
发表时间: 2007-11-16
影响因子: 4.8
作者:
Ahuja, Nidhi;Schwer, Bjoern;Verdin, Eric
通讯作者: Verdin, Eric
DOI: 10.1128/mcb.01636-07
发表时间: 2007-12-01
影响因子: 5.3
作者:
Lombard, David B.;Alt, Frederick W.;Schwer, Bjoern
通讯作者: Schwer, Bjoern
DOI: 10.1073/pnas.0604392103
发表时间: 2006-07-05
影响因子: 11.1
作者:
Hallows, William C.;Lee, Susan;Denu, John M.
通讯作者: Denu, John M.