Ubiquitin is a carbon dioxide-binding protein.
Ubiquitin is a carbon dioxide-binding protein.
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泛素是一种二氧化碳结合蛋白。
DOI:
10.1126/sciadv.abi5507
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发表时间:
2021-09-24
期刊:
影响因子:
13.6
通讯作者:
Cann MJ
中科院分区:
文献类型:
--
作者:
Linthwaite VL;Pawloski W;Pegg HB;Townsend PD;Thomas MJ;So VKH;Brown AP;Hodgson DRW;Lorimer GH;Fushman D;Cann MJ
Altered ubiquitin conjugation is a mechanism by which mammalian cells can respond to fluctuating pCO2. The identification of CO2-binding proteins is crucial to understanding CO2-regulated molecular processes. CO2 can form a reversible posttranslational modification through carbamylation of neutral N-terminal α-amino or lysine ε-amino groups. We have previously developed triethyloxonium (TEO) ion as a chemical proteomics tool for covalent trapping of carbamates, and here, we deploy TEO to identify ubiquitin as a mammalian CO2-binding protein. We use 13C-NMR spectroscopy to demonstrate that CO2 forms carbamates on the ubiquitin N terminus and ε-amino groups of lysines 6, 33, 48, and 63. We demonstrate that biologically relevant pCO2 levels reduce ubiquitin conjugation at lysine-48 and down-regulate ubiquitin-dependent NF-κB pathway activation. Our results show that ubiquitin is a CO2-binding protein and demonstrates carbamylation as a viable mechanism by which mammalian cells can respond to fluctuating pCO2.
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DOI:
10.1073/pnas.1711017115
发表时间:
2018-05-01
影响因子:
11.1
作者:
Hirayama S;Sugihara M;Morito D;Iemura SI;Natsume T;Murata S;Nagata K
通讯作者:
Nagata K
DOI:
10.1073/pnas.74.8.3203
发表时间:
1977-01-01
影响因子:
11.1
作者:
ARNOLD, WP;MITTAL, CK;MURAD, F
通讯作者:
MURAD, F
影响因子:
--
作者:
Holman, Jerry D;Tabb, David L;Mallick, Parag
通讯作者:
Mallick, Parag
影响因子:
2.6
作者:
Carvalho, Andreia F.;Pinto, Manuel P.;Azevedo, Jorge E.
通讯作者:
Azevedo, Jorge E.
影响因子:
8.7
作者:
Ikeda F
通讯作者:
Ikeda F