Observing single enzyme molecules interconvert between activity states upon heating.
Observing single enzyme molecules interconvert between activity states upon heating.
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DOI:
10.1371/journal.pone.0086224
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发表时间:
2014
期刊:
影响因子:
3.7
通讯作者:
Walt DR
中科院分区:
文献类型:
--
作者:
Rojek MJ;Walt DR
In this paper, we demonstrate that single enzyme molecules of β-galactosidase interconvert between different activity states upon exposure to short pulses of heat. We show that these changes in activity are the result of different enzyme conformations. Hundreds of single β-galactosidase molecules are trapped in femtoliter reaction chambers and the individual enzymes are subjected to short heating pulses. When heating pulses are introduced into the system, the enzyme molecules switch between different activity states. Furthermore, we observe that the changes in activity are random and do not correlate with the enzyme's original activity. This study demonstrates that different stable conformations play an important role in the static heterogeneity reported previously, resulting in distinct long-lived activity states of enzyme molecules in a population.
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影响因子:
64.8
作者:
Eisenmesser, EZ;Millet, O;Kern, D
通讯作者:
Kern, D
DOI:
10.1081/txr-120026914
发表时间:
2003-01-01
期刊:
JOURNAL OF TOXICOLOGY-TOXIN REVIEWS
影响因子:
--
作者:
Craik, DJ;Barry, DG;Sando, L
通讯作者:
Sando, L
DOI:
10.1139/o2012-006
发表时间:
2012-08-01
期刊:
BIOCHEMISTRY AND CELL BIOLOGY-BIOCHIMIE ET BIOLOGIE CELLULAIRE
影响因子:
--
作者:
Craig, Douglas B.;Schwab, Thomas;Sterner, Reinhard
通讯作者:
Sterner, Reinhard
影响因子:
2.9
作者:
Craig, Douglas B.;Nichols, Ellert R.
通讯作者:
Nichols, Ellert R.
影响因子:
3.9
作者:
MUGA, A;ARRONDO, JLR;BERNABEU, C
通讯作者:
BERNABEU, C