Restriction Analysis of pDRK and pGRN Original Plasmids HindIII HindIII pGRN Hin dIII pDRK ara C amp r kan r gfp P BAD
Restriction Analysis of pDRK and pGRNOriginal Plasmids
HindIII
HindIII
pGRN
HindIII
pDRK
ara C
ampr
kanr
gfpPBAD
Restriction Analysis of pDRK and pGRNRestriction Fragments after digest with HindIII
gfp
ara C
PBAD ampr
kanr
Ligation of pDRK/pGRN Restriction Fragments
DNA ligase
AA G C T T A
T T C G A A G C T
T C G A
DNA ligase
gfp
Ligation of pDRK/pGRN Restriction FragmentsRecombinant Plasmid of Interest
rpGLO PBAD
ampr
ara C
HindIII
HindIII
gfp
Preparing Competent Cells for Transformation
++
---
--
-- -
----
---
Lipid bilayerinner membrane
Lipid bilayerouter membrane
Peptidoglycan layer
++++
++
++
++++
++
++
++++ ++ ++
++
++++
adhesion zone
phospholipids
calcium ion
++
---
--
--- -
----
---
Lipid bilayerinner membrane
Lipid bilayerouter membrane
Peptidoglycan layer
++
++
++++
++
++
++++
++
++
++++ ++ ++
++
++
++++
++
++
++
++++
++
++
++
++++
plasmid
adhesion zone
phospholipids
calcium ion
Transforming Escherichia coli With a Recombinant Plasmid
GFP Expression
ara C gene
gfp gene
promoter
mRNA
transcription
translation
C protein
GFP Expression
C protein prevents gfp transcription by causing a loop to form in the region of the gfp gene
ara C gene
gfp gene
promoter
GFP Expression
ara C gene gfp gene
promoter
arabinose
mRNA
Arabinose – C protein complex prevents DNA looping and helps to align RNA polymerase on the promoter site.
transcription
translation
GFP
RNA polymerase
arabinose – C protein complex
C protein
Transforming Escherichia coli With a Recombinant Plasmid
Recombinant plasmids
Competent cells
transformed cells
Growth of transformed bacteria on various plates
P+ plates
P- plates
LB LB/amp LB/amp/ara
LB LB/amp
No growth
GFP
Ligation of pDRK/pGRN Restriction FragmentsRecombinant Plasmid of Interest
rpGLO PBAD
ampr
ara C
HindIII
HindIII
gfp