Continuum Electrostatics Approaches to Calculating pKas and Ems in Proteins.

Abstract:

:Proteins change their charge state through protonation and redox reactions as well as through binding charged ligands. The free energy of these reactions is dominated by solvation and electrostatic energies and modulated by protein conformational relaxation in response to the ionization state changes. Although computational methods for calculating these interactions can provide very powerful tools for predicting protein charge states, they include several critical approximations of which users should be aware. This chapter discusses the strengths, weaknesses, and approximations of popular computational methods for predicting charge states and understanding the underlying electrostatic interactions. The goal of this chapter is to inform users about applications and potential caveats of these methods as well as outline directions for future theoretical and computational research.

journal_name

Methods Enzymol

journal_title

Methods in enzymology

authors

Gunner MR,Baker NA

doi

10.1016/bs.mie.2016.05.052

subject

Has Abstract

pub_date

2016-01-01 00:00:00

pages

1-20

eissn

0076-6879

issn

1557-7988

pii

S0076-6879(16)30088-X

journal_volume

578

pub_type

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