Part:BBa_K4377006
Ultrabithorax (Ubx)
Drosophila melanogaster homeotic protein ultrabithorax(Ubx) coding region. It is said that protein can be produced as a kind of fiber by self-assembling with dityrosine bonds, and it has been proved to produce in Escherichia coli.
Sequence and Features
- 10COMPATIBLE WITH RFC[10]
- 12INCOMPATIBLE WITH RFC[12]Illegal NheI site found at 7
Illegal NheI site found at 30
Illegal NotI site found at 208 - 21COMPATIBLE WITH RFC[21]
- 23COMPATIBLE WITH RFC[23]
- 25INCOMPATIBLE WITH RFC[25]Illegal AgeI site found at 421
- 1000COMPATIBLE WITH RFC[1000]
Introduction
Drosophila melanogaster homeotic protein ultrabithorax(Ubx) coding region. It is said that protein can be produced as a kind of fiber by self-assembling with dityrosine bonds, and it has been proved to produce in Escherichia coli (E. coli).
Design
To verify the self-assembling ability of UBX protein, we created a composite part K4377006. (Figure 1. ) In order to purify our protein after expression, we added 10x His tag at the N terminal of Ubx protein. The reason we add 10x His tag at N terminal but not C terminal is to amplify the production of Ubx protein. To improve performance, we performed codon harmonization. The optimized sequence of codons will be more suitable for expression by our engineered E. coli.
Cloning result
We successfully amplified His UBX plasmid in E.coli Dh5α and transformed into E.coli BL21 for expression.
SDS-PAGE result
After expression, we conducted SDS PAGEs to verify whether the protein was produced.( result in Figure 3.)
Test
As shown in the SDS PAGE result, the production was below expectation, also, we conducted functional tests, but there was no significant evidence that the protein is able to form dityrosine bonds.
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