Difference between revisions of "Part:BBa K1119008"

Latest revision as of 17:07, 30 October 2017

CMV promoter - GFP - hGH polyA tail

This is a mammalian GFP generator used for characterization of our CMV promoter (BBa_K1119006). This GFP generator contains the CMV promoter sequence with GFP reporter in RFC25 format(BBa_K648013) and hGH polyA terminator (BBa_K404108).

This GFP generator was then transfected into HEK293FT cells and in vivo green fluorescence signal was observed under confocal microscope.

pEGFP-N1 (Clontech) served as the positive control. It contains the CMV promoter and EGFP reporter. A GFP generator that does not contain the CMV promoter was used as the negative control.

The [http://2013.igem.org/Team:Hong_Kong_HKUST/characterization detailed protocol] of our characterization can be found in HKUST iGEM 2013 Wiki.

Figure 1. CMV promoter drives expression of GFP. HEK cells transfected with pCMV-GFP gave GFP signals. HEK cells transfected with the commercial pEGFP-N1 showed similar results, while the same construct without any promoter did not give any GFP signals.

Improved Part

iGEM Technion 2017 improved this part to BBa_K2520006. This improved device contains a TRE promoter instead of the original CMV, to allow for inducible expression of GFP within mammalian cells.

Sequence and Features

Assembly Compatibility:

10
COMPATIBLE WITH RFC[10]
12
COMPATIBLE WITH RFC[12]
21
INCOMPATIBLE WITH RFC[21]
Illegal BglII site found at 614
23
COMPATIBLE WITH RFC[23]
25
INCOMPATIBLE WITH RFC[25]
Illegal NgoMIV site found at 628
Illegal AgeI site found at 1369
1000
INCOMPATIBLE WITH RFC[1000]
Illegal BsaI site found at 1772
Illegal BsaI.rc site found at 1274

@@ Line 1: / Line 1: @@
 __NOTOC__
 <partinfo>BBa_K1119008 short</partinfo>
+<br>
-In characterization of Mitochondrial Leader Sequence ([[Part:BBa_K1119001|BBa_K1119001]]), negative control was made by GFP generator that does not contains the CDS of MLS ([[Part:BBa_K1119008|BBa_K1119008]]). The translation unit was driven by CMV promoter ([[Part:BBa_K1119006|BBa_K1119006]]) and terminated by hGH polyA signal ([[Part:BBa_K404108|BBa_K404108]]).
+This is a mammalian GFP generator used for characterization of our CMV promoter ([[Part:BBa_K1119006|BBa_K1119006]]). This GFP generator contains the CMV promoter sequence with GFP reporter in RFC25 format([[Part:BBa_K648013|BBa_K648013]]) and hGH polyA terminator ([[Part:BBa_K404108|BBa_K404108]]).
-===Result===
+This GFP generator was then transfected into HEK293FT cells and <i>in vivo</i> green fluorescence signal was observed under confocal microscope.
-In the characterization of CMV promoter ([[Part:BBa_K1119006|BBa_K1119006]]) , the coding sequence of CMV promoter was assembled with GFP reporter ([[Part:BBa_K648013|BBa_K648013]]) and hGH polyA terminator ([[Part:BBa_K404108|BBa_K404108]]) using Freiburg’s RFC25 format.
-The pCMV-GFP was then transfected into HEK293FT cells and in vivo green fluorescence signal was observed under confocal microscope.
+pEGFP-N1 (Clontech) served as the positive control. It contains the CMV promoter and EGFP reporter. A GFP generator that does not contain the CMV promoter was used as the negative control.
-The positive control was pEGFP-N1 (Clontech) that contains CMV promoter and EGFP reporter. A negative control was made by GFP generator that does not contain the CMV promoter.
 The [http://2013.igem.org/Team:Hong_Kong_HKUST/characterization detailed protocol] of our characterization can be found in HKUST iGEM 2013 Wiki.
-[[File:Final CMV annotated no ABC.jpg|600px|thumb|center|'''Figure 1. CMV promoter drives expression of GFP.''' HEK cells transfected with pCMV-GFP expressed GFP Signal. HEK cells transfected with the commercial pEGFP-N1 showed similar results, while the negative control GFP without any promoter was not expressed.   ]]
+[[File:Final CMV annotated no ABC.jpg|600px|thumb|center|'''Figure 1. CMV promoter drives expression of GFP.''' HEK cells transfected with pCMV-GFP gave GFP signals. HEK cells transfected with the commercial pEGFP-N1 showed similar results, while the same construct without any promoter did not give any GFP signals.]]
+===Improved Part===
+iGEM Technion 2017 improved this part to <partinfo>BBa_K2520006</partinfo>. This improved device contains a TRE promoter instead of the original CMV, to allow for inducible expression of GFP within mammalian cells.