Modeling of alpha-MSH conformations with implicit solvent.
Modeling of alpha-MSH conformations with implicit solvent.
复制标题
使用隐式溶剂对 α-MSH 构象进行建模。
DOI:
--
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发表时间:
1999
期刊:
影响因子:
--
通讯作者:
B. Pettitt
中科院分区:
文献类型:
--
作者:
N. Prabhu;J. Perkyns;B. Pettitt
A conformational search for the most probable structures of the hormone alpha-MSH in aqueous solution was performed in order to help determine the structural features necessary for biological activity. The free-energy surface was modeled using methods from integral equation theory, and high-temperature molecular dynamics was used to enhance conformational sampling. Families of low free-energy structures have been found. The minimum energy structure shows a stable beta-turn conformation in the putative message region that is stabilized by a salt bridge between Glu5 and Lys11. The orientation of the side chains reflects the amphiphilic nature of the peptide, and a close interaction between the side chains of the His6, Phe7 and Trp9 was observed. Several structural features observed in the minimum energy structure agree well with experimental results. The conformational features led to a hypothesis of a receptor-hormone interaction model in which the hydrophobic side chains of Phe7 and Trp9 interact with the transmembrane portion of the human melanocortin (MC1) receptor. Also, the positively charged side chain of Arg8 and the imidazole side chain of His6 may interact with the negatively charged portions of the receptor which may even be on the receptor's extracellular loops.
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影响因子:
2.9
作者:
Sugg,EE;Castrucci,AM;Hadley,ME;vanBinst,G;Hruby,VJ
通讯作者:
Hruby,VJ
影响因子:
7.3
作者:
Knittel,JJ;Sawyer,TK;Hruby,VJ;Hadley,ME
通讯作者:
Hadley,ME
DOI:
--
发表时间:
1996
期刊:
Drug design and discovery.
影响因子:
--
作者:
Haskell-Luevano,C;Sawyer,TK;Trumpp-Kallmeyer,S;Bikker,JA;Humblet,C;Gantz,I;Hruby,VJ
通讯作者:
Hruby,VJ
DOI:
10.1073/pnas.77.10.5754
发表时间:
1980-01-01
期刊:
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA-BIOLOGICAL SCIENCES
影响因子:
--
作者:
SAWYER, TK;SANFILIPPO, PJ;HADLEY, ME
通讯作者:
HADLEY, ME
影响因子:
56.9
作者:
MOUNTJOY, KG;ROBBINS, LS;CONE, RD
通讯作者:
CONE, RD