Difference between revisions of "Part:BBa K3895012"
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Bt toxins refer to the toxic proteins produced by insect pathogenic bacteria ''Bacillus thuringiensis''[1].  
 
Bt toxins refer to the toxic proteins produced by insect pathogenic bacteria ''Bacillus thuringiensis''[1].  
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This part was adjusted from BBa_K3686010 (<partinfo>K3686010</partinfo>), where Cry7Ca1 is a differentiate of Bt toxins with a molecular mass of 129kDa, recently isolated from Bt strain BHT-13. Cry7Ca1 is connected with GFP (<partinfo>E0040</partinfo>),and constructed into pCAMBIA-Cry7Ca1-eGFP vector.
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This part was adjusted from SZ-SHD 2020's bt toxin Cry7Ca1 (<partinfo>K3686010</partinfo>) for tobacco wheat instant expression, where Cry7Ca1 is a differentiate of Bt toxins with a molecular mass of 129kDa, recently isolated from Bt strain BHT-13. Cry7Ca1 is connected with GFP (<partinfo>E0040</partinfo>),and constructed into pCAMBIA1301 vector.
  
  
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[[File:T--SZ SHD--cryjpg.png|center|350px|thumb|'''Figure 1.''' Plasmid construction of pCAMBIA-Cry7Ca1-eGFP vector.]]
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[[File:T--SZ SHD--cryjpg.png|center|350px|thumb|'''Figure 1.''' Plasmid construction of pCAMBIA-Cry7Ca1-eGFP.]]
  
 
===Protocol===
 
===Protocol===
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{|border=0 width="90%" align="center"
 
{|border=0 width="90%" align="center"
 
|-align="center"
 
|-align="center"
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|[[File:T--SZ SHD--cry1.jpg|400px|thumb|center|'''Positive''' ]]
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|[[File:T--SZ SHD--cry1.jpg|400px|thumb|center|'''Figure 2(a). Positive results showed successful expression of pCAMBIA-Cry7Ca1-eGFP in Nicotiana''' ]]
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|[[File:T--SZ SHD--cry2.jpg|400px|thumb|center|'''Negative''' ]]
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|[[File:T--SZ SHD--cry2.jpg|400px|thumb|center|'''Figure 2(b). Negative results without Cry7Ca1-eGFP in Nicotiana benthamiana.''' ]]
 
|}
 
|}
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[[File:T--SZ SHD--lyj2.jpg|300px|center]]
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'''Figure 3.''' Western Blot result of Cry7Ca1-eGFP protein express in wheat leaf.
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[[File:T--SZ_SHD--lyj1.jpg|300px|center]]
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'''Figure 4.''' Fluorescence microscopy images of the CDP transfected on plant leaf. 1/3. Blank control group with CDP only; 2/4. CDP with 10ng/ul plant expressing vector.
  
 
<!-- Add more about the biology of this part here
 
<!-- Add more about the biology of this part here

Latest revision as of 17:16, 21 October 2021


Insecticidal protein

Bt toxins refer to the toxic proteins produced by insect pathogenic bacteria Bacillus thuringiensis[1]. This part was adjusted from SZ-SHD 2020's bt toxin Cry7Ca1 (BBa_K3686010) for tobacco wheat instant expression, where Cry7Ca1 is a differentiate of Bt toxins with a molecular mass of 129kDa, recently isolated from Bt strain BHT-13. Cry7Ca1 is connected with GFP (BBa_E0040),and constructed into pCAMBIA1301 vector.


Figure 1. Plasmid construction of pCAMBIA-Cry7Ca1-eGFP.

Protocol

1. Transfection of pCAMBIA-Cry7Ca1-eGFP vector through Carbon dots nanocomposite (CDP) to Nicotiana benthamiana

Coupling CDP with plant expressing vector Mix the following ingredients:

Ingredients Volumn
MES buffer(50X) 10ul
CDP(50X) 10ul
DNA(237ng/ul >10ng/ul final con) 22ul
10% glycerol 25ul
ddH2O 433ul
total 500ul

Gently mix and incubate at 37℃ for 30min.

2. Brush the mixture gently on the leaf of Nicotiana benthamiana(leaf length>10cm,Growing well) ，mark the area of brushing

3. Put the plant back in the light incubator(28℃，12h light 12h dark), repeat the process for four days at 3:00pm each day(2/4)


Results

Fluorescence microscope to observe the GFP in leave

Figure 2(a). Positive results showed successful expression of pCAMBIA-Cry7Ca1-eGFP in Nicotiana
Figure 2(b). Negative results without Cry7Ca1-eGFP in Nicotiana benthamiana.
T--SZ SHD--lyj2.jpg

Figure 3. Western Blot result of Cry7Ca1-eGFP protein express in wheat leaf.

T--SZ SHD--lyj1.jpg

Figure 4. Fluorescence microscopy images of the CDP transfected on plant leaf. 1/3. Blank control group with CDP only; 2/4. CDP with 10ng/ul plant expressing vector.

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 205
    Illegal NgoMIV site found at 220
    Illegal NgoMIV site found at 1567
    Illegal NgoMIV site found at 1828
    Illegal NgoMIV site found at 1990
  • 1000
    INCOMPATIBLE WITH RFC[1000]
    Illegal BsaI.rc site found at 4079


References

Wu, Y., Lei, C. F., Yi, D., Liu, P. M., & Gao, M. Y. (2011). Novel Bacillus thuringiensis δ-endotoxin active against Locusta migratoria manilensis. Applied and environmental microbiology, 77(10), 3227-3233.