Team:Goettingen/week12-2

From 2012.igem.org

(Difference between revisions)
Line 1: Line 1:
-
{{GoettingenHeader}}
+
{{GoettingenHeader|deu=Team:Goettingen/week1|eng=Team:Goettingen/week1}}
-
 
+
<html>
-
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" dir="ltr" lang="en">
+
<table>  
-
<head>
+
-
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
+
-
<meta name="keywords" content="Team:Goettingen,Team:Goettingen,Team:Goettingen/Homing coli,Team:Goettingen/Human Practice/Flash coli,Team:Goettingen/Press,Team:Goettingen/Project/General information">
+
-
<link rel="shortcut icon" href="https://2012.igem.org/favicon.ico">
+
-
<link rel="search" type="application/opensearchdescription+xml" href="https://2012.igem.org/wiki/opensearch_desc.php" title="2012.igem.org (English)">
+
-
<link title="Creative Commons" type="application/rdf+xml" href="https://2012.igem.org/wiki/index.php?title=Team:Goettingen&amp;action=creativecommons" rel="meta">
+
-
<link rel="alternate" type="application/rss+xml" title="2012.igem.org RSS Feed" href="https://2012.igem.org/wiki/index.php?title=Special:Recentchanges&amp;feed=rss">
+
-
<link rel="alternate" type="application/atom+xml" title="2012.igem.org Atom Feed" href="https://2012.igem.org/wiki/index.php?title=Special:Recentchanges&amp;feed=atom">
+
-
</head>
+
-
<body class="mediawiki ns-0 ltr page-Team_Goettingen">
+
-
 
+
-
<font face="Verdana" size="-1">Language: <img height="20", src="http://www.patrickreinke.de/igem/eng.jpg"> English</a> <br>
+
Line 79: Line 67:
<br>
<br>
-
<body id="top">
+
<a href="https://2012.igem.org/Team:Goettingen/Notebook">Back to overview</a><br>
-
<a href="#top">&uarr; Return to top</a>
+
-
<br>
+
<br>
<br>
</td>
</td>
-
 
-
 
-
<table bordercolor="black" border="1 px" width="600 px"><tr><td>
 
-
<b>Important pages</b>:<br>
 
-
<a href="https://2012.igem.org/Team:Goettingen">Home</a>;
 
-
<a href="https://2012.igem.org/Team:Goettingen/Team">Team</a>;
 
-
<a href="https://igem.org/Team.cgi?year=2012">Official Team Profile</a>;
 
-
<a href="https://2012.igem.org/Team:Goettingen/Project">Project</a>;
 
-
<a href="https://2012.igem.org/Team:Goettingen/Parts">Parts submitted to the Registry</a>;
 
-
<a href="https://2012.igem.org/Team:Goettingen/Modeling">Modeling</a>;
 
-
<a href="https://2012.igem.org/Team:Goettingen/Notebook">Notebook</a>;
 
-
<a href="https://2012.igem.org/Team:Goettingen/Saftey">Saftey</a>;
 
-
<a href="https://2012.igem.org/Team:Goettingen/Attributions">Attributions</a>
 
-
</td></tr>
 
-
</table>
 
-
 
-
 
-
 
-
 
-
 
-
 
-
 
-
 
                                 <!-- Text body end-->
                                 <!-- Text body end-->
Line 114: Line 77:
</body>
</body>
</html>
</html>
 +
{{GoettingenFooter}}

Revision as of 09:55, 22 September 2012

Deutsch  / English 

#2 Speed Improvement - 12th week

Back to overview

V07_16


Chemical retransformation of fliC (DH10B), fliC (Salmonella), motA, motB and yhjH into E. coli (DH10B, BL21, DH5α and XL1 Blue)
  • Experiment:
    For the chemical retransformation the standard protocol was followed. This time the four E. coli strains DH10B, BL21, DH5α and XL1 Blue were transformed in order to subsequently perform swimming assays and compare the accessibility of the different strains.
  • Observations & Results:
    The retransformation efficient. Numerous colonies had formed at each plate except for the negative control.


V07_17


Preparation of over night cultures
  • Experiment:
    In order to test the influence of the different genes on the motility of the distinct strains over night cultures were prepared. On that account it is important to shake the cultures only at 140 rpm to spare the flagella.
  • Observations & Results:
    Not all cultures grew properly. Especially, those of E.coli BL21 featured a low cell density.


V07_18


Performance of motility assay
  • Experiment:
    LB medium containing ampicillin was inoculated with the over night culture and shaken until an optical density of 0.6 was reached. Meanwhile ampicillin containing M9 agar plates were prepared and autoclaved Whatman Filter Papers were imbued with tryptone solution. Then the cultures were dropped on the agar at a distance of 1 cm to the paper. On each plate also colonies hosting the empty vector pUC18 were dropped in order to have a reference. Each plate was prepared in duplicates.
  • Observations & Results:
    The following freshly inoculated cultures did not grow very well and only reached an OD between 0.3 and 0.4 : fliC (DH10B) in DH10B
    fliC (DH10B) in DH5α
    fliC (DH10B) in XL1 Blue
    motB in DH5α
    motB in XL1 Blue
    At the following day (19th of July) the colonies still looked exactly the same. Neither chemotaxis nor swimming could observed. Two days after preparation of the swimming assay plates (20th of July) slight chemotaxis and motility could be perceived. motB and fliC overexpression seems to have a positive influence on bacterial motility in all strains. At the 23rd of July quite big halos had formed. motB shows a strong effect, especially in DH10B. fliC (DH10B) seems to increase motility in all strains. However, the difference to the reference is not very drastic at all, but since the genes are not under control of strong promoters this results seems reasonable.

Back to overview
↑ Back to top!

Retrieved from "http://2012.igem.org/Team:Goettingen/week12-2"