Difference between revisions of "Part:BBa K1919000"

(Usage and Biology)
(Usage and Biology)
Line 24: Line 24:
 
In recent years, studies concerning the expression of anti¬microbial peptides have mainly focused on the use of fusion partners [9]. For example, Thioredoxin, a heat-stable and low molecular weight soluble protein in the prokaryotic cytoplasm, has been shown to display chaperone like activity [10]. Fusion proteins of antimicrobial peptides generated in E. coli reduce the toxic effect of antimicrobial peptides to the host cells and protect the small antimicrobial peptides from proteolytic degradation.
 
In recent years, studies concerning the expression of anti¬microbial peptides have mainly focused on the use of fusion partners [9]. For example, Thioredoxin, a heat-stable and low molecular weight soluble protein in the prokaryotic cytoplasm, has been shown to display chaperone like activity [10]. Fusion proteins of antimicrobial peptides generated in E. coli reduce the toxic effect of antimicrobial peptides to the host cells and protect the small antimicrobial peptides from proteolytic degradation.
  
[1] Boman HG: Peptide antibiotics and their role in innate immunity. Annu Rev Immunol 13: 61-92, 1995.
+
[1] Boman HG: Peptide antibiotics and their role in innate immunity. Annu Rev Immunol 13: 61-92, 1995.
[2] Devine DA and Hancock RE: Cationic peptides: distribution and mechanisms of resistance. Curr Pharm Des 8: 703-714, 2002.
+
[2] Devine DA and Hancock RE: Cationic peptides: distribution and mechanisms of resistance. Curr Pharm Des 8: 703-714, 2002.
[3] Boman HG, Wade D, Boman IA, Wåhlin B and Merrifield RB: Antibacterial and antimalarial properties of peptides that are cecropin-melittin hybrids. FEBS Lett 259: 103-106, 1989.
+
[3] Boman HG, Wade D, Boman IA, Wåhlin B and Merrifield RB: Antibacterial and antimalarial properties of peptides that are cecropin-melittin hybrids. FEBS Lett 259: 103-106, 1989.
[4] Moore AJ, Devine DA and Bibby MC: Preliminary experimental anticancer activity of cecropins. Pept Res 7: 265-269, 1994.
+
[4] Moore AJ, Devine DA and Bibby MC: Preliminary experimental anticancer activity of cecropins. Pept Res 7: 265-269, 1994.
[5] Hancock RE and Lehrer R: Cationic peptides: a new source of antibiotics. Trends Biotechnol 16: 82-88, 1998.
+
[5] Hancock RE and Lehrer R: Cationic peptides: a new source of antibiotics. Trends Biotechnol 16: 82-88, 1998.
[6] Li JY, Zhang FC and Ma ZH: Prokaryotic expression of cecropin gene isolated from the silk worm Bombyx mori Xinjiang race and antibacterial activity of fusion cecropin. Acta Entomol Sin 47: 407-411, 2004 (In Chinese).
+
[6] Li JY, Zhang FC and Ma ZH: Prokaryotic expression of cecropin gene isolated from the silk worm Bombyx mori Xinjiang race and antibacterial activity of fusion cecropin. Acta Entomol Sin 47: 407-411, 2004 (In Chinese).
[7] Tang X, Wang H, Kelaimu R, Mao XF and Liu ZY: Molecular cloning, expression of cecropin-XJ gene from silkworm and antibacterial activity in Pichia pastoris. Biotechnology 21: 26-31, 2011 (In Chinese).
+
[7] Tang X, Wang H, Kelaimu R, Mao XF and Liu ZY: Molecular cloning, expression of cecropin-XJ gene from silkworm and antibacterial activity in Pichia pastoris. Biotechnology 21: 26-31, 2011 (In Chinese).
[8] Xia L, Zhang F, Liu Z, Ma J and Yang J: Expression and characterization of cecropinXJ, a bioactive antimicrobial peptide from Bombyx mori (Bombycidae, Lepidoptera) in Escherichia coli. Experimental and Therapeutic Medicine 5: 1745-1751, 2013.
+
[8] Xia L, Zhang F, Liu Z, Ma J and Yang J: Expression and characterization of cecropinXJ, a bioactive antimicrobial peptide from Bombyx mori (Bombycidae, Lepidoptera) in Escherichia coli. Experimental and Therapeutic Medicine 5: 1745-1751, 2013.
[9] Zorko M and Jerala R: Production of recombinant antimicrobial peptides in bacteria. Methods Mol Biol 618: 61-76, 2010.
+
[9] Zorko M and Jerala R: Production of recombinant antimicrobial peptides in bacteria. Methods Mol Biol 618: 61-76, 2010.
[10] LaVallie ER, Diblasio EA, Kovacic S, Grant KL, Schendel PF and McCoy JM: A thioredoxin gene fusion expression system that circumvents inclusion body formation in E. coli cytoplasm. Biotechnology (NY) 11: 187-193, 1993.
+
[10] LaVallie ER, Diblasio EA, Kovacic S, Grant KL, Schendel PF and McCoy JM: A thioredoxin gene fusion expression system that circumvents inclusion body formation in E. coli cytoplasm. Biotechnology (NY) 11: 187-193, 1993.

Revision as of 15:30, 11 October 2016


The coding sequence of antimicrobial peptide CecropinXJ

Antimicrobial peptide CecropinXJ belongs to AMP family Cecropin, a group of small basic polypeptides mainly found in the hemolymph of insects, consist of 31-39 amino acid residues and have a broad spectrum, high heat stability and potent bacteriostatic activity.

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]


Usage and Biology

Antimicrobial peptides (AMPs) are a group of peptides that play roles in the innate immune system to protect the host from invading pathogens [1]. AMPs have minimal toxicity and low sensitivity effects to the host [2], which means antimicrobial peptides have the potential to be used to replace antibiotics in the future. Thus, the detrimental effects of antibiotics overuse will be released.

Cecropins, a group of small AMPs mainly found in the hemolymph of insects, consist of 31 39 amino acid residues and have a broad spectrum, high heat stability and potent bacteriostatic activity [3-5]. CecropinXJ (Part BBa_K1919000) is a member of the Cecropin family, which was first cloned from the larvae of the Xinjiang silkworm (Bombyx mori). Previous researches have determined the complete amino acid sequence of this molecule [6]. It has been demonstrated that CecropinXJ could be expressed in eukaryotic expression system such as Pichia pastoris [7] or prokaryotic expression system such as E.coli [8]. What’s more, CecropinXJ exhibited to have various activities such as antibacterial activity against both Gram‑positive and Gram-negative bacteria, as well as antifungal activity [8]. These characteristics indicate that CecropinXJ is an ideal antimicrobial substance to be used to treat foot diseases caused by microbes.

In recent years, studies concerning the expression of anti¬microbial peptides have mainly focused on the use of fusion partners [9]. For example, Thioredoxin, a heat-stable and low molecular weight soluble protein in the prokaryotic cytoplasm, has been shown to display chaperone like activity [10]. Fusion proteins of antimicrobial peptides generated in E. coli reduce the toxic effect of antimicrobial peptides to the host cells and protect the small antimicrobial peptides from proteolytic degradation.

[1] Boman HG: Peptide antibiotics and their role in innate immunity. Annu Rev Immunol 13: 61-92, 1995. [2] Devine DA and Hancock RE: Cationic peptides: distribution and mechanisms of resistance. Curr Pharm Des 8: 703-714, 2002. [3] Boman HG, Wade D, Boman IA, Wåhlin B and Merrifield RB: Antibacterial and antimalarial properties of peptides that are cecropin-melittin hybrids. FEBS Lett 259: 103-106, 1989. [4] Moore AJ, Devine DA and Bibby MC: Preliminary experimental anticancer activity of cecropins. Pept Res 7: 265-269, 1994. [5] Hancock RE and Lehrer R: Cationic peptides: a new source of antibiotics. Trends Biotechnol 16: 82-88, 1998. [6] Li JY, Zhang FC and Ma ZH: Prokaryotic expression of cecropin gene isolated from the silk worm Bombyx mori Xinjiang race and antibacterial activity of fusion cecropin. Acta Entomol Sin 47: 407-411, 2004 (In Chinese). [7] Tang X, Wang H, Kelaimu R, Mao XF and Liu ZY: Molecular cloning, expression of cecropin-XJ gene from silkworm and antibacterial activity in Pichia pastoris. Biotechnology 21: 26-31, 2011 (In Chinese). [8] Xia L, Zhang F, Liu Z, Ma J and Yang J: Expression and characterization of cecropinXJ, a bioactive antimicrobial peptide from Bombyx mori (Bombycidae, Lepidoptera) in Escherichia coli. Experimental and Therapeutic Medicine 5: 1745-1751, 2013. [9] Zorko M and Jerala R: Production of recombinant antimicrobial peptides in bacteria. Methods Mol Biol 618: 61-76, 2010. [10] LaVallie ER, Diblasio EA, Kovacic S, Grant KL, Schendel PF and McCoy JM: A thioredoxin gene fusion expression system that circumvents inclusion body formation in E. coli cytoplasm. Biotechnology (NY) 11: 187-193, 1993.