Difference between revisions of "Part:BBa K2959010"

 
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<partinfo>BBa_K2959010 short</partinfo>
 
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This composite part consists of a T7 promoter, ribosome binding site, a coding sequence for AtPFN1 as a fusion protein with a 6x His-Tag, and a double terminator. This construct allows the expression of AtPFN, an antifungal peptide from  Arabidopsis thaliana in E. coli BL21 (DE3). Expression can be positively regulates by the addition of IPTG thanks to its promoter. The part is designed to code for a fusion protein of AtPFN1 with a polyhistidine tag (6x His-Tag) at its C-terminus for purification by immobilized metal affinity chromatography.
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This composite part consists of a T7 promoter, ribosome binding site, a coding sequence for AtPFN1 as a fusion protein with a 6x His-Tag, and a double terminator. This construct allows the expression of AtPFN, an antifungal peptide from  <i>Arabidopsis thaliana</i> in <i>E. coli</i> BL21 (DE3). Expression can be positively regulates by the addition of IPTG thanks to its promoter. The part is designed to code for a fusion protein of AtPFN1 with a polyhistidine tag (6x His-Tag) at its C-terminus for purification by immobilized metal affinity chromatography.
  
  
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===Usage and Biology===
 
===Usage and Biology===
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AtPFN1 is a protein extracted from the plant Arabidopsis thaliana, it is a profillin which means that is an actin binding protein and weights 14 kDa<sup>1</sup>. It inhibits fungal cells growth  by penetrating the cell wall and membrane, generating reactive oxygen species and mitochondrial superoxide triggering cell apoptosis, resulting in morphological changes in the cells<sup>2</sup>.
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The binding affinity of antifungal proteins to fungal cells is the most important attribute for their fungal action, even if the mechanism is membranolytic or cell damaging. It has also been demonstrated that these proteins can be transferred across the cell membrane into the cytosolic space and accumulate in the cytosol of the cell by altering the membrane integrity. For cytosolic translocation the mechanisms used by the proteins are direct penetration, vacuolar localization and expansion, partial plasma membrane disruption, transition pore formation and endocytosis. AtPFN1 has exhibited a potent antifungal activity against fungal strains of <i>C. gloesporioides</i>, <i>F. osysporum</i>, <i>C. albicans</i>, and <i>C. glabrata</i><sup>2</sup>.
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<span class='h3bb'>Sequence and Features</span>
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===Sequence and Features===
 
<partinfo>BBa_K2959010 SequenceAndFeatures</partinfo>
 
<partinfo>BBa_K2959010 SequenceAndFeatures</partinfo>
  
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===References===
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1. Christensen, H. E. M., Ramachandran, S., Tan, C.-T., Surana, U., Dong, C.-H., & Chua, N.-H. (1996). Arabidopsis profilins are functionally similar to yeast profilins: identification of a vascular bundle-specific profilin and a pollen-specific profilin. The Plant Journal, 10(2), 269–279. doi:10.1046/j.1365-313x.1996.10020269.x
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2. Park, S. C., Kim, I. R., Kim, J. Y., Lee, Y., Kim, E. J., Jung, J. H., ... & Lee, J. R. (2018). Molecular mechanism of Arabidopsis thaliana profilins as antifungal proteins. Biochimica et Biophysica Acta (BBA)-General Subjects, 1862(12), 2545-2554. doi:10.1016/j.bbagen.2018.07.028 
  
 
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Revision as of 20:14, 12 October 2019


Expressible Arabidopsis thaliana Profilin 1

This composite part consists of a T7 promoter, ribosome binding site, a coding sequence for AtPFN1 as a fusion protein with a 6x His-Tag, and a double terminator. This construct allows the expression of AtPFN, an antifungal peptide from Arabidopsis thaliana in E. coli BL21 (DE3). Expression can be positively regulates by the addition of IPTG thanks to its promoter. The part is designed to code for a fusion protein of AtPFN1 with a polyhistidine tag (6x His-Tag) at its C-terminus for purification by immobilized metal affinity chromatography.


Usage and Biology


AtPFN1 is a protein extracted from the plant Arabidopsis thaliana, it is a profillin which means that is an actin binding protein and weights 14 kDa1. It inhibits fungal cells growth by penetrating the cell wall and membrane, generating reactive oxygen species and mitochondrial superoxide triggering cell apoptosis, resulting in morphological changes in the cells2.


The binding affinity of antifungal proteins to fungal cells is the most important attribute for their fungal action, even if the mechanism is membranolytic or cell damaging. It has also been demonstrated that these proteins can be transferred across the cell membrane into the cytosolic space and accumulate in the cytosol of the cell by altering the membrane integrity. For cytosolic translocation the mechanisms used by the proteins are direct penetration, vacuolar localization and expansion, partial plasma membrane disruption, transition pore formation and endocytosis. AtPFN1 has exhibited a potent antifungal activity against fungal strains of C. gloesporioides, F. osysporum, C. albicans, and C. glabrata2.

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
    COMPATIBLE WITH RFC[25]
  • 1000
    COMPATIBLE WITH RFC[1000]

References


<p align="justify"> 1. Christensen, H. E. M., Ramachandran, S., Tan, C.-T., Surana, U., Dong, C.-H., & Chua, N.-H. (1996). Arabidopsis profilins are functionally similar to yeast profilins: identification of a vascular bundle-specific profilin and a pollen-specific profilin. The Plant Journal, 10(2), 269–279. doi:10.1046/j.1365-313x.1996.10020269.x


2. Park, S. C., Kim, I. R., Kim, J. Y., Lee, Y., Kim, E. J., Jung, J. H., ... & Lee, J. R. (2018). Molecular mechanism of Arabidopsis thaliana profilins as antifungal proteins. Biochimica et Biophysica Acta (BBA)-General Subjects, 1862(12), 2545-2554. doi:10.1016/j.bbagen.2018.07.028