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Thermodynamics and structure of meth...

Begay, Shanadeen Crystal.

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Thermodynamics and structure of methionine enkephalin using the statistical temperature molecular dynamics algorithm.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Thermodynamics and structure of methionine enkephalin using the statistical temperature molecular dynamics algorithm./
作者:	Begay, Shanadeen Crystal.
面頁冊數:	100 p.
附註:	Source: Dissertation Abstracts International, Volume: 76-11(E), Section: B.
Contained By:	Dissertation Abstracts International76-11B(E).
標題:	Physical chemistry. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3711177
ISBN:	9781321872637

Thermodynamics and structure of methionine enkephalin using the statistical temperature molecular dynamics algorithm.
Begay, Shanadeen Crystal.

Thermodynamics and structure of methionine enkephalin using the statistical temperature molecular dynamics algorithm. - 100 p.

Source: Dissertation Abstracts International, Volume: 76-11(E), Section: B.

Thesis (Ph.D.)--Boston University, 2015.

Kim, Straub, and Keyes introduced the statistical temperature molecular dynamics (STMD) algorithm to overcome broken ergodicity by sampling a nonBoltzmann flat energy histogram as noted in Kim, Straub, and Keyes, Phys. Rev. Lett. 97: 050601 (2007). Canonical averages are calculated via reweighting to the desired temperature. While STMD is promising, its application has been almost entirely to simple or model systems. In this dissertation the implementation of STMD into the biosimulation package CHARMM is used to simulate the methionine enkephalin pentamer peptide with a methione terminal cap in a droplet of CHARMM TIP3P water molecules.

ISBN: 9781321872637Subjects--Topical Terms:

1981412
Physical chemistry.

Thermodynamics and structure of methionine enkephalin using the statistical temperature molecular dynamics algorithm.
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500 $a Source: Dissertation Abstracts International, Volume: 76-11(E), Section: B.
500 $a Adviser: Thomas F. Keyes.
502 $a Thesis (Ph.D.)--Boston University, 2015.
520 $a Kim, Straub, and Keyes introduced the statistical temperature molecular dynamics (STMD) algorithm to overcome broken ergodicity by sampling a nonBoltzmann flat energy histogram as noted in Kim, Straub, and Keyes, Phys. Rev. Lett. 97: 050601 (2007). Canonical averages are calculated via reweighting to the desired temperature. While STMD is promising, its application has been almost entirely to simple or model systems. In this dissertation the implementation of STMD into the biosimulation package CHARMM is used to simulate the methionine enkephalin pentamer peptide with a methione terminal cap in a droplet of CHARMM TIP3P water molecules.
520 $a Chain thermodynamics is analyzed from the novel perspective of the statistical temperature as a function of potential energy, TS( U), automatically generated by STMD. Both the minimum in the slope of TS(U), and the peak in the heat capacity as a function of temperature, calculated via reweighting, indicate a collapse transition at Ttheta ≈ 253K. Distributions of dihedral angles are obtained as a function of temperature. Rotamer regions found in the literature are reproduced, along with unique regions not found previously, including with advanced algorithms, indicating the power of STMD enhanced sampling.
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