Energy considerations show that low-barrier hydrogen bonds do not offer a catalytic advantage over ordinary hydrogen bonds.
Energy considerations show that low-barrier hydrogen bonds do not offer a catalytic advantage over ordinary hydrogen bonds.
复制标题
能源方面的考虑表明,低势垒氢键并不比普通氢键具有催化优势。
DOI:
10.1073/pnas.93.24.13665
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发表时间:
1996
影响因子:
11.1
通讯作者:
Papazyan,A
中科院分区:
文献类型:
--
作者:
Warshel,A;Papazyan,A
Low-barrier hydrogen bonds have recently been proposed as a major factor in enzyme catalysis. Here we evaluate the feasibility of transition state (TS) stabilization by low-barrier hydrogen bonds in enzymes. Our analysis focuses on the facts that (i) a low-barrier hydrogen bond is less stable than a regular hydrogen bond in water, (ii) TSs are more stable in the enzyme active sites than in water, and (iii) a nonpolar active site would destabilize the TS relative to its energy in water. Combining these points and other experimental and theoretical facts in a physically consistent framework shows that a low-barrier hydrogen bond cannot stabilize the TS more than an ordinary hydrogen bond. The reason for the large catalytic effect of active site hydrogen bonds is that their formation entails a lower reorganization energy than their solution counterparts, due to the preorganized enzyme environment.
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DOI:
--
发表时间:
1984
期刊:
影响因子:
--
作者:
H. Granger;G. Meininger;J. Borders;R. Morff;A. H. Goodman
通讯作者:
A. H. Goodman
影响因子:
3.1
作者:
SMAJE L;ZWEIFACH B W;INTAGLIETTA M
通讯作者:
INTAGLIETTA M
影响因子:
--
作者:
BURTON, KS;JOHNSON, PC
通讯作者:
JOHNSON, PC
影响因子:
3.1
作者:
R. Morff;H. Granger
通讯作者:
H. Granger
影响因子:
--
作者:
Harvey;M.;Shapiro;Don;D.;Stromberg;Dennis;R.;Lee;Axd Curt;A.;Wiederhielm
通讯作者:
Wiederhielm