Polarizability and Kerr constant of proteins by boundary element methods.

Polarizability and Kerr constant of proteins by boundary element methods. Research Abstract Details 

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Polarizability and Kerr constant of proteins by boundary element methods. Abstract Text:

Sergio R Aragon,David K Hahn,

A precise implementation of the boundary element method has been applied to the computation of the polarizability and the Kerr constant of eight soluble proteins. The method is demonstrated to be accurate and precise by comparison with analytical values for spheroids. Two different integral equations have been solved: (1) an exact equation with explicit dielectric constant dependence, and (2) an exact equation for a metallic body. The dielectric dependence for the metallic body case is built in with a generalization of the ellipsoid formula. Both methods agree quantitatively with each other for low relative dielectric constants. A full tensor expression for the Kerr constant yields perfect agreement with experiment for some proteins and badly under reports for the rest. The protein structure is obtained from a crystallographic database and is assumed rigid throughout the TEB measurement. Electrolyte effects are neglected. The Kerr constant is dominated by the protein dipole moment and is quite sensitive to the orientation of the dipole moment relative to the principal axes of the polarizability tensor. Several possible reasons for the large discrepancy between some computed and measured values are discussed.

Polarizability and Kerr constant of proteins by boundary element methods. Publishing Authors By Initials

SR Aragon,DK Hahn,

For similar water research abstracts see: water research

PUBMED ID PMID:

MEDLINE DATE:

Polarizability and Kerr constant of proteins by boundary element methods. Journal Published:

PUBLICATION TYPE: Research Support, N.I.H., Extr

Journal: Colloids and surfaces. B, Biointerfaces

VOLUME: 56

Page Numbers: 19-25

Journal Abbreviation:

ISSN: 0927-7765

DAY: 28

MONTH: 11

YEAR: 2006

Polarizability and Kerr constant of proteins by boundary element methods. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 9315133

Polarizability and Kerr constant of proteins by boundary element methods. Keywords Mesh Terms:

KEYWORDS: Water

MESH TERMS: chemistry

Chemical & Substance for Abstract: Polarizability and Kerr constant of proteins by boundary element methods. Information

Substance Name: Muramidase

Registry Number: EC 3.2.1.17

Grant and Affiliation Information for Polarizability and Kerr constant of proteins by boundary element methods.

AFFILIATION: Department of Chemistry & Biochemistry, San Francisco State University, San Francisco, CA, USA. aragons@sfsu.edu

Country: Netherlands

AGENCY: United States NIGMS

GRANT: S06 GM52588

ACRONYM: GM

MEDLINETA: Colloids Surf B Biointerfaces

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