Increase of enzyme activity through specific covalent modification with fragments.
Increase of enzyme activity through specific covalent modification with fragments.
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DOI:
10.1039/c7sc01966a
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发表时间:
2017-11-01
期刊:
影响因子:
8.4
通讯作者:
Hubbard RE
中科院分区:
文献类型:
--
作者:
Darby JF;Atobe M;Firth JD;Bond P;Davies GJ;O'Brien P;Hubbard RE
Structure-guided tethering of a fragment activator significantly increases enzyme activity. Modulation of enzyme activity is a powerful means of probing cellular function and can be exploited for diverse applications. Here, we explore a method of enzyme activation where covalent tethering of a small molecule to an enzyme can increase catalytic activity (k cat/K M) up to 35-fold. Using a bacterial glycoside hydrolase, BtGH84, we demonstrate how small molecule “fragments”, identified as activators in free solution, can be covalently tethered to the protein using Michael-addition chemistry. We show how tethering generates a constitutively-activated enzyme-fragment conjugate, which displays both improved catalytic efficiency and increased susceptibility to certain inhibitor classes. Structure guided modifications of the tethered fragment demonstrate how specific interactions between the fragment and the enzyme influence the extent of activation. This work suggests that a similar approach may be used to modulate the activity of enzymes such as to improve catalytic efficiency or increase inhibitor susceptibility.
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DOI:
10.1002/anie.201407081
发表时间:
2014-12-01
期刊:
Angewandte Chemie (International ed. in English)
影响因子:
--
作者:
Darby JF;Landström J;Roth C;He Y;Davies GJ;Hubbard RE
通讯作者:
Hubbard RE
DOI:
10.1073/pnas.0901417106
发表时间:
2009-04-07
影响因子:
11.1
作者:
Heinzelman, Pete;Snow, Christopher D.;Arnold, Frances H.
通讯作者:
Arnold, Frances H.
影响因子:
56.9
作者:
Cohen, MS;Zhang, C;Taunton, J
通讯作者:
Taunton, J
影响因子:
--
作者:
Kintses, Balint;Hein, Christopher;Hollfelder, Florian
通讯作者:
Hollfelder, Florian
DOI:
10.1073/pnas.97.17.9367
发表时间:
2000-08-15
影响因子:
11.1
作者:
Erlanson, DA;Braisted, AC;Wells, JA
通讯作者:
Wells, JA