Difference between revisions of "Part:BBa K4377000"

Revision as of 22:57, 11 October 2022

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 (E. coli).

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

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.

Sequence and Features