From dbcca959034fa757f34126b355ff884898db65fd Mon Sep 17 00:00:00 2001 From: don Date: Wed, 16 Jun 2010 23:59:36 +0000 Subject: [PATCH] ditch Unsaturation Backward git-svn-id: svn+ssh://hemlock.ucr.edu/srv/svn/misc/trunk/origins_of_life@532 25fa0111-c432-4dab-af88-9f31a2f6ac42 --- kinetic_formalism.Rnw | 56 ------------------------------------------- 1 file changed, 56 deletions(-) diff --git a/kinetic_formalism.Rnw b/kinetic_formalism.Rnw index 8b387e2..4acbbf0 100644 --- a/kinetic_formalism.Rnw +++ b/kinetic_formalism.Rnw @@ -371,62 +371,6 @@ where $\left$ is the average unsaturation of the vesicle, and $un_\mathrm{monomer}$ is the average unsaturation. In this equation, as the average unsaturation of the vesicle is larger, -\begin{equation} - un_b = 10^{\left(2^{- \left< un_\mathrm{ves} \right> } - -2^{-un_\mathrm{monomer}}\right)^2} - \label{eq:unsaturation_backward} -\end{equation} - -The most common $\left$ is around $1.7$, which leads to -a range of $\Delta \Delta G^\ddagger$ from -$\Sexpr{format(digits=3,to.kcal(10^((2^-1.7-2^-0)^2)))} -\frac{\mathrm{kcal}}{\mathrm{mol}}$ for monomers with 0 unsaturation -to -$\Sexpr{format(digits=3,to.kcal(10^((2^-1.7-2^-4)^2)))}\frac{\mathrm{kcal}}{\mathrm{mol}}$ -for monomers with 4 unsaturations. - - -<>= -grid <- expand.grid(x=seq(0,4,length.out=20), - y=seq(0,4,length.out=20)) -grid$z <- 10^((2^-grid$x-2^-grid$y)^2) -print(wireframe(z~x*y,grid,cuts=50, - drape=TRUE, - scales=list(arrows=FALSE), - xlab=list("Average Vesicle Unsaturation",rot=30), - ylab=list("Monomer Unsaturation",rot=-35), - zlab=list("Unsaturation Backward",rot=93))) -rm(grid) -@ -<>= -grid <- expand.grid(x=seq(0,4,length.out=20), - y=seq(0,4,length.out=20)) -grid$z <- to.kcal(10^((2^-grid$x-2^-grid$y)^2)) -print(wireframe(z~x*y,grid,cuts=50, - drape=TRUE, - scales=list(arrows=FALSE), - xlab=list("Average Vesicle Unsaturation",rot=30), - ylab=list("Monomer Unsaturation",rot=-35), - zlab=list("Unsaturation Backward (kcal/mol)",rot=93))) -rm(grid) -@ - -\subsubsection{Unsaturation Backward II} - -Unsaturation also influences the ability of a lipid molecule to leave -a membrane. If a molecule has an unsaturation level which is different -from the surrounding membrane, it will be more likely to leave the -membrane. The more different the unsaturation level is, the greater -the propensity for the lipid molecule to leave. However, a vesicle -with some unsaturation is more favorable for lipids with more -unsaturation than the equivalent amount of less unsatuturation, so the -difference in energy between unsaturation is not linear. Therefore, an -equation with the shape -$x^{\left| y^{-\left< un_\mathrm{ves}\right> }-y^{-un_\mathrm{monomer}} \right| }$ -where $\left$ is the average unsaturation of -the vesicle, and $un_\mathrm{monomer}$ is the average unsaturation. In -this equation, as the average unsaturation of the vesicle is larger, - \begin{equation} un_b = 7^{1-\left(20\left(2^{-\left} - 2^{-un_\mathrm{monomer}} \right)^2+1\right)^{-1}} \label{eq:unsaturation_backward} -- 2.39.2