Difference between revisions of "Part:BBa K2020003"

Revision as of 20:27, 8 October 2016

mutated expression system for subtilisin E in E. coli (S221Y)

Once introduced into E. coli, this BioBrick is able to produce an inactive version of subtilisin E and simultaneously secret the enzyme into the periplasm of the cell. By performing a site-directed mutagenesis, serine in the catalytic triad of the enzyme was exchanged against tyrosine. As a consequence, the enzyme looses its proteolytic activity.

Usage and Biology

Subtilisin E is an alkaline serine protease which non-specifically digests proteins. It is naturally produced by Bacillus subtilis.

This composite part consists of the promoter BBa_R0010, the ribosome binding site BBa_B0034, the newly created BioBrick part BBa_K2020001 and the terminator BBa_B0010. BioBrick BBa_K2020001 is a composite part itself and includes the secretion tag pelB (BBa_J32015) and a subtilisin E gene optimized for Escherichia coli codon usage (BBa_K2020000).

With this composite part iGEM Aachen 2016 was able to prove that serine²²¹ in the catalytic triad of subtilisin E is essential for the activity of the enzyme.

Sequence and Features

Assembly Compatibility:

10
COMPATIBLE WITH RFC[10]
12
COMPATIBLE WITH RFC[12]
21
COMPATIBLE WITH RFC[21]
23
COMPATIBLE WITH RFC[23]
25
INCOMPATIBLE WITH RFC[25]
Illegal NgoMIV site found at 280
1000
COMPATIBLE WITH RFC[1000]

@@ Line 3: / Line 3: @@
 <partinfo>BBa_K2020003 short</partinfo>
-This composite part consists of the promoter [[Part:BBa_R0010|BBa_R0010]], the ribosome binding site [[Part:BBa_B0034|BBa_B0034]], the newly created BioBrick part [[Part:BBa_K2020001|BBa_K2020001]] and the terminator [[Part:BBa_B0010|BBa_B0010]]. BioBrick BBa_K2020001 is a composite part itself and includes the secretion tag pelB ([[Part:BBa_J32015|BBa_J32015]]) and a subtilisin E gene optimized for ''Escherichia coli'' codon usage ([[Part:BBa_K2020000|BBa_K2020000]]). Once introduced into ''E. coli'', this BioBrick is able to produce an inactive version of subtilisin E and simultaneously secret the enzyme into the periplasm of the cell. Subtilisin E is an alkaline serine protease which non-specifically digests proteins. By performing a site-directed mutagenesis, serine in the catalytic triade of the enzyme was exchanged against tyrosine. Therefore, the enzyme looses its proteolytic activity. <br>
+Once introduced into ''E. coli'', this BioBrick is able to produce an inactive version of subtilisin E and simultaneously secret the enzyme into the periplasm of the cell. By performing a site-directed mutagenesis, serine in the catalytic triad of the enzyme was exchanged against tyrosine. As a consequence, the enzyme looses its proteolytic activity.
-With this composite part iGEM Aachen 2016 was able to prove that serine<sup>221</sup> in the catalytic triade of subtilisin E is essential for the activity of the enzyme.
-<!-- Add more about the biology of this part here
 ===Usage and Biology===
+Subtilisin E is an alkaline serine protease which non-specifically digests proteins. It is naturally produced by ''Bacillus subtilis''.
+This composite part consists of the promoter [[Part:BBa_R0010|BBa_R0010]], the ribosome binding site [[Part:BBa_B0034|BBa_B0034]], the newly created BioBrick part [[Part:BBa_K2020001|BBa_K2020001]] and the terminator [[Part:BBa_B0010|BBa_B0010]]. BioBrick BBa_K2020001 is a composite part itself and includes the secretion tag pelB ([[Part:BBa_J32015|BBa_J32015]]) and a subtilisin E gene optimized for ''Escherichia coli'' codon usage ([[Part:BBa_K2020000|BBa_K2020000]]).
+With this composite part iGEM Aachen 2016 was able to prove that serine<sup>221</sup> in the catalytic triad of subtilisin E is essential for the activity of the enzyme.
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