Mechanisms of nickel toxicity in microorganisms.
Mechanisms of nickel toxicity in microorganisms.
复制标题
DOI:
10.1039/c1mt00063b
复制
发表时间:
2011-11
期刊:
影响因子:
--
通讯作者:
Hausinger RP
中科院分区:
文献类型:
--
作者:
Macomber L;Hausinger RP
Nickel has long been known to be an important human toxicant, including having the ability to form carcinomas, but until recently nickel was believed to be an issue only to microorganisms living in nickel-rich serpentine soils or areas contaminated by industrial pollution. This assumption was overturned by the discovery of a nickel defense system (RcnR/RcnA) found in microorganisms that live in a wide range of environmental niches, suggesting that nickel homeostasis is a general biological concern. To date, the mechanisms of nickel toxicity in microorganisms and higher eukaryotes are poorly understood. In this review, we summarize nickel homeostasis processes used by microorganisms and highlight in vivo and in vitro effects of exposure to elevated concentrations of nickel. On the basis of this evidence we propose four mechanisms of nickel toxicity: 1) nickel replaces the essential metal of metalloproteins, 2) nickel binds to catalytic residues of non-metalloenzymes; 3) nickel binds outside the catalytic site of an enzyme to inhibit allosterically, and 4) nickel indirectly causes oxidative stress.
登录
查看更多内容
影响因子:
3.5
作者:
Chen, Haobin;Costa, Max
通讯作者:
Costa, Max
影响因子:
2.9
作者:
BUTZOW, JJ;EICHHORN, GL
通讯作者:
EICHHORN, GL
DOI:
10.1016/j.bbrc.2004.03.082
发表时间:
2004-04-30
影响因子:
3.1
作者:
Arima, J;Iwabuchi, M;Hatanaka, T
通讯作者:
Hatanaka, T
影响因子:
3.1
作者:
Beckwith, CS;McGee, DJ;Riley, LK
通讯作者:
Riley, LK
影响因子:
4.8
作者:
Cave, JS;Meng, WM;Robinson, NJ
通讯作者:
Robinson, NJ