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;#How is synthetic biology different with traditional genetic engineering? | ;#How is synthetic biology different with traditional genetic engineering? | ||
- | ==Practice== | + | ==Practice with [[R]] package== |
+ | ;Repressilater | ||
<pre> | <pre> | ||
library(deSolve) | library(deSolve) | ||
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out = lsoda(x0,t,repress,p) | out = lsoda(x0,t,repress,p) | ||
matplot(out[,1],out[,2:4],type="l") | matplot(out[,1],out[,2:4],type="l") | ||
+ | </pre> | ||
+ | ;Genetic toggle switch | ||
+ | <pre> | ||
### Genetic toggle switch | ### Genetic toggle switch | ||
### Gardner & Collins (2000) | ### Gardner & Collins (2000) |
Revision as of 04:51, 12 October 2012
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Class Description
- This is introductory class to cover topics in synthetic biology by its past (origin), present and future.
- The course can be divided into three sessions
- Fundamental principles of synthetic biology
- Landmark papers in synthetic biology
- Current topics and future direction
- Additional topics - ethical issues and risks in synthetic biology
Course materials
- Fundamental principles
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- Landmarks
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- PLoS collections
- PLoS ONE organized Synthetic Biology Collections
- Nature WEB focus
- Science
- PubMed database
- synthetic biology - search results
- Google scholar
- synthetic biology - search results
Open questions
- What is 'synthetic biology'?
- How is synthetic biology different with traditional genetic engineering?
Practice with R package
- Repressilater
library(deSolve) ### Repressilator ### Elowitz & Leibler (2000) repress = function(t,y,p) { dy = rep(0,6); dy[1] = -y[1] + p[1]/(1.+y[4]^p[4])+p[2]; # dy[1] lacI; dy[4] CI dy[2] = -y[2] + p[1]/(1.+y[5]^p[4])+p[2]; # dy[2] tetR; dy[5] LacI dy[3] = -y[3] + p[1]/(1.+y[6]^p[4])+p[2]; # dy[3] cI; dy[6] TetR dy[4] = -p[3]*(y[4]-y[3]); # cI dy[5] = -p[3]*(y[5]-y[1]); # lacI dy[6] = -p[3]*(y[6]-y[2]); # tetR return(list(dy)) # p[1..4] = c(alpha,alpha0,beta,hill) } # initial parameters x0 = 2*runif(6); p = c(50,0,.2,2); t = seq(0,500,by=0.1) out = lsoda(x0,t,repress,p) matplot(out[,1],out[,2:4],type="l")
- Genetic toggle switch
### Genetic toggle switch ### Gardner & Collins (2000) Toggle=function(t,y,parms) { u=y[1]; v=y[2]; du= -u + parms[1]/(1+v^parms[2]); dv= -v + parms[1]/(1+u^parms[3]); dY=c(du,dv); return(list(dY)); } x0=c(.2,.1); times=seq(0,50,by=0.2) out=lsoda(x0,times,Toggle,parms=c(3,2,2)) matplot(out[,1],out[,2:3],type="l",ylim=c(0,3),xlab="time t",ylab="u,v"); # phase portrait plot(out[,2],out[,3],type="l",xlab="u",ylab="v")