A small engineered protein lacks structural uniqueness by increasing the side-chain conformational entropy.
A small engineered protein lacks structural uniqueness by increasing the side-chain conformational entropy.
复制标题
小型工程蛋白通过增加侧链构象熵而缺乏结构独特性。
DOI:
10.1073/pnas.93.24.13583
复制
发表时间:
1996
影响因子:
11.1
通讯作者:
H. Nakamura
中科院分区:
文献类型:
--
作者:
K. Furukawa;M. Oda;H. Nakamura
A small globular protein, the third repeat of the c-Myb DNA-binding domain, which is composed of 54 amino acid residues, was engineered so as to understand the structural uniqueness of native proteins. This small protein has three alpha-helices that form a helix-turn-helix structure, which is maintained by the hydrophobic core with three Ile residues. One of the mutant proteins, with two of the buried Ile (Ile-155 and Ile-181) substituted with Leu residues, showed multiple conformations, as monitored by heteronuclear magnetic resonance spectroscopy for 13C- and 15N-labeled proteins. The increase in the side-chain conformational entropy, caused by changing the Ile to a Leu residue on an alpha-helix, could engender the lack of structural uniqueness. In native proteins, the conformations of not only the beta-branched side chains, but also those of the neighboring bulky side chains, can be greatly restricted, depending upon the local backbone structure.
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影响因子:
5.6
作者:
PRIVALOV, PL;MAKHATADZE, GI
通讯作者:
MAKHATADZE, GI
影响因子:
5.6
作者:
Padmanabhan,S;Baldwin,RL
通讯作者:
Baldwin,RL
影响因子:
56.9
作者:
JENNINGS, PA;WRIGHT, PE
通讯作者:
WRIGHT, PE
影响因子:
2.9
作者:
LUMB, KJ;KIM, PS
通讯作者:
KIM, PS
DOI:
10.1073/pnas.89.6.2017
发表时间:
1992-03-15
影响因子:
11.1
作者:
BRIGGS, MS;RODER, H
通讯作者:
RODER, H