Difference between revisions of "Part:BBa K3196012"
 
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<partinfo>BBa_K3196012 short</partinfo>
 
<partinfo>BBa_K3196012 short</partinfo>
  
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FLO10 αpro is a combined signal peptide, which enhance the enzyme activity 3 times. SLAC can catalyze lignin.
+
The FLO10 was combined with the guiding peptide sequence of saccharomyces cerevisiae to form the signal peptide FLO10- αpro.FLO10 αpro is a combined signal peptide, which enhance the enzyme activity 3 times.  
 
<h1>'''Characterization'''</h1>
 
<h1>'''Characterization'''</h1>
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This is a four section for degrade and transfer lignin part.
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This is a composite part that used to degraded lignin.
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[[File:T--HUST--China--2019-FLO10-αproSLAC.jpg ‎|400px|thumb|center|Figure1. T--HUST--China--2019-FLO10-αproSLAC.]]
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SLAC is a multicopper oxidase isolated from S. coelicolor , capable of catalyzing one-electron oxidation of a wide range of substrates to generate radicals while concomitantly reducing molecular oxygen to water<sup>[1]</sup>.
 +
 
 +
The signal peptide FLO10 was combined with the guiding peptide sequence of saccharomyces cerevisiae to form the signal peptide FLO10- αpro.FLO10 αpro is a combined signal peptide, which enhance the enzyme activity 3 times.<sup>[2]</sup>
 +
P. pastoris is usually the preferred host for the production of industrial enzymes.
 +
 
 +
[[File:T--HUST--China--2019-FLO10-αproSLAC.jpg ‎|400px|thumb|center|Figure1.This is the pathway of this composite part.]]
  
 
<h1>'''DNA Gel Electrophoretic'''</h1>
 
<h1>'''DNA Gel Electrophoretic'''</h1>
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After we link FLO10 αpro and SLAC successfully, we run the PCR with an intention to confirm the expression of SLAC. As the figure shows, we get the genetic stripe about xxx bp which means the PCR is successful.
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To confirm the function of this part, first we confirm that the gene is transferred to P. pastoris GS115 successfully.
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[[File:Kozak_sequence.png ‎|400px|thumb|center|Figure1. This figure shows the most possible kozak consensus sequence.]]
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 +
1.DNA extraction of the E.coli plasmid and verification of the right fragment.
 +
 
 +
2.Prepare the competent cells of P. pastoris GS115.
 +
 
 +
3.Electro transformation.
 +
 
 +
4.Yeast genome extraction and PCR verification.
 +
 
 +
As the picture shows, we have constructed the engineering bacteria successfully.
 +
[[File:T--HUST-China--2019-DNA Gel Electrophoretic.png|400px|thumb|center|Figure1:This is the DNA Gel Electrophoretic after the PCR of engineering P. pastoris GS115 genomo. ]]
 +
 
  
 
<h1>'''SDS-PAGE'''</h1>
 
<h1>'''SDS-PAGE'''</h1>
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We run the SDS-PAGE to check whether FLO10 αpro help the enzyme transfer to the extracellular. As the figure shows, we get the protein type about xxx bp which means the SDS-PAGE is successful.
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Second, we cultured the engineering P. pastoris GS115(FLO10 pro-SLAC)in the buffered glycerol-complex medium (BMGY) and induced it in buffered minimal methanol medium (BMM).  
−
[[File:Kozak_sequence.png ‎|400px|thumb|center|Figure1. This figure shows the most possible kozak consensus sequence.]]
+
[[File:T--HUST-China--2019-SLAC-SDS-PAGE.jpg |400px|thumb|center|Figure3:The SDS-page result shows that engineering P. pastoris GS115(FLO10 pro-SLAC) have successfully secrete SLAC protein into superfluous liquid.]]
 +
 
  
 
<h1>'''Enzyme Activity'''</h1>
 
<h1>'''Enzyme Activity'''</h1>
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We use ABTS to detect the enzyme activity. As the figure shows, the solution turns green, which confirm the enzyme activity.
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Laccase activity was determined at room temperature (22–25 °C) using ABTS. Oxidation of ABTS (1 mM) was measured at 420 nm (ε = 36,000 M−1 cm−1) in 20 mM acetate buffer (pH 4.0).  
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[[File:Kozak_sequence.png ‎|400px|thumb|center|Figure1. This figure shows the most possible kozak consensus sequence.]]
+
 
 +
By using this formula:
 +
〖activity=(A2−A1)〗∕t∗11244
 +
 
 +
We obtain the follow figure that represent the enzyme activity changes with time.  
  
 +
[[File:T--HUST-China--2019-FLO10 pro-SLAC.png  |400px|thumb|center|Figure4:This is the engineering P. pastoris GS115(FLO10 pro-SLAC) enzyme activity curve. ]]
  
 
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Latest revision as of 12:05, 21 October 2019


AOX1-Kozak-FLO10 pro-SLAC-His tag-AOX1 Terminator

The FLO10 was combined with the guiding peptide sequence of saccharomyces cerevisiae to form the signal peptide FLO10- αpro.FLO10 αpro is a combined signal peptide, which enhance the enzyme activity 3 times.

Characterization

This is a composite part that used to degraded lignin. SLAC is a multicopper oxidase isolated from S. coelicolor , capable of catalyzing one-electron oxidation of a wide range of substrates to generate radicals while concomitantly reducing molecular oxygen to water[1].

The signal peptide FLO10 was combined with the guiding peptide sequence of saccharomyces cerevisiae to form the signal peptide FLO10- αpro.FLO10 αpro is a combined signal peptide, which enhance the enzyme activity 3 times.[2] P. pastoris is usually the preferred host for the production of industrial enzymes.

Figure1.This is the pathway of this composite part.

DNA Gel Electrophoretic

To confirm the function of this part, first we confirm that the gene is transferred to P. pastoris GS115 successfully.

1.DNA extraction of the E.coli plasmid and verification of the right fragment.

2.Prepare the competent cells of P. pastoris GS115.

3.Electro transformation.

4.Yeast genome extraction and PCR verification.

As the picture shows, we have constructed the engineering bacteria successfully.

Figure1:This is the DNA Gel Electrophoretic after the PCR of engineering P. pastoris GS115 genomo.


SDS-PAGE

Second, we cultured the engineering P. pastoris GS115(FLO10 pro-SLAC)in the buffered glycerol-complex medium (BMGY) and induced it in buffered minimal methanol medium (BMM).

Figure3:The SDS-page result shows that engineering P. pastoris GS115(FLO10 pro-SLAC) have successfully secrete SLAC protein into superfluous liquid.


Enzyme Activity

Laccase activity was determined at room temperature (22–25 °C) using ABTS. Oxidation of ABTS (1 mM) was measured at 420 nm (ε = 36,000 M−1 cm−1) in 20 mM acetate buffer (pH 4.0).

By using this formula: 〖activity=(A2−A1)〗∕t∗11244

We obtain the follow figure that represent the enzyme activity changes with time.

Figure4:This is the engineering P. pastoris GS115(FLO10 pro-SLAC) enzyme activity curve.

Sequence and Features


Assembly Compatibility:
  • 10
    COMPATIBLE WITH RFC[10]
  • 12
    COMPATIBLE WITH RFC[12]
  • 21
    INCOMPATIBLE WITH RFC[21]
    Illegal BamHI site found at 937
  • 23
    COMPATIBLE WITH RFC[23]
  • 25
    COMPATIBLE WITH RFC[25]
  • 1000
    INCOMPATIBLE WITH RFC[1000]
    Illegal BsaI.rc site found at 1586