Difference between revisions of "Part:BBa K404241"
 
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__NOTOC__
 
__NOTOC__
 
<partinfo>BBa_K404241 short</partinfo>
 
<partinfo>BBa_K404241 short</partinfo>
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{| style="color:black" cellpadding="6" cellspacing="1" border="2" align="left"
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! colspan="2" style="background:#66bbff;"|[https://parts.igem.org/Part:BBa_K404241 pCMV_(AAV2)-VP123ex (ViralBrick-453-BAP)]
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|-
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|'''BioBrick Nr.'''
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|[https://parts.igem.org/Part:BBa_K404241 BBa_K404241]
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|-
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|'''RFC standard'''
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|[https://parts.igem.org/Help:Assembly_standard_10 RFC 10]
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|-
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|'''Requirement'''
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|pSB1C3<br>
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|-
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|'''Source'''
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|
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|-
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|'''Submitted by'''
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|[http://2010.igem.org/Team:Freiburg_Bioware FreiGEM 2010]
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|}
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<br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/>
 
<br><b>The Biotinylation Acceptor peptide motif, inserted into the 453 loop of [[Part:BBa_K404007|pCMV_[AAV2]-VP123]]</b>
 
<br><b>The Biotinylation Acceptor peptide motif, inserted into the 453 loop of [[Part:BBa_K404007|pCMV_[AAV2]-VP123]]</b>
  
 
[[Image:Freiburg10_pCMV_VP123 453-BAP.png|thumb|center|480px]]<br>
 
[[Image:Freiburg10_pCMV_VP123 453-BAP.png|thumb|center|480px]]<br>
  
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===Usage and Biology===
 
 
<html>
 
<html>
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<div style="width:965px; height:400px; ">
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<h3>Usage and Biology</h3>
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<div style="float:left; width:460px; height:auto;  margin: 0px 5px 0px 5px; text-align:justify;">
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<div style="width:965px; height:200px; ">
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<div style="float:left; width:400px; height:auto;  margin: 0px 5px 0px 5px; text-align:justify;">
  
 
The Biotinylation Acceptor Peptide (BAP) is a 15 amino acid long peptide identified by Schatz J., 1993 in an library screening approach. This peptide with the sequence 5' - GLNDIFEAQKIEWHE - 3' contains a central lysine that is specifically biotinylated by the prokaryotic enzyme biotin holenzyme synthetase, encoded in the BirA gene of E. coli. Specific biotinylation of this peptide sequence can be performed in vivo by contransfecting a plasmid with the BirA gene as described for the AAV in Arnold et al.; 2006 or by an in vitro coupling approach using the purified Escherichia coli enzyme biotin ligase (BirA).  
 
The Biotinylation Acceptor Peptide (BAP) is a 15 amino acid long peptide identified by Schatz J., 1993 in an library screening approach. This peptide with the sequence 5' - GLNDIFEAQKIEWHE - 3' contains a central lysine that is specifically biotinylated by the prokaryotic enzyme biotin holenzyme synthetase, encoded in the BirA gene of E. coli. Specific biotinylation of this peptide sequence can be performed in vivo by contransfecting a plasmid with the BirA gene as described for the AAV in Arnold et al.; 2006 or by an in vitro coupling approach using the purified Escherichia coli enzyme biotin ligase (BirA).  
  
 
</div>
 
</div>
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<div style="float:right; width:480px; height:auto; "><img src="https://static.igem.org/mediawiki/parts/a/a9/Freiburg10_ViralBrick_motif_BAP.png" width="460"
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<div style="float:right; width:400px; height:auto; "><img src="https://static.igem.org/mediawiki/parts/a/a9/Freiburg10_ViralBrick_motif_BAP.png" width="400" /></div></div>
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height="auto"/></div></div><br>
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<h3>Capsid</h3>
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The AAV capsid consists of 60 capsid protein subunits. The three cap proteins VP1, VP2, and VP3 are encoded in an overlapping reading frame. Arranged in a stoichiometric ratio of 1:1:10, they form an icosahedral symmetry. The mRNA encoding for the cap proteins is transcribed from p40 and alternative spliced to minor and major products. Alternative splicing and translation initiation of VP2 at a nonconventional ACG initiation codon promote the expression of VP1, VP2 and VP3. The VP proteins share a common C terminus and stop codon, but begin with a different start codon. The N termini of VP1 and VP2 play important roles in infection and contain motifs that are highly homologous to the phospholipase A2 (PLA2) domain and nuclear localization signals (BR)(+).
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<br>
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<br>
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<br>
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CMV promoter is derived from human Cytomegalovirus, which belongs to Herpesvirus group. All family members share the ability to remain in latent stage in the human body. CMV is located upstream of immediate-early gene. However, CMV promoter is an example of widely used promoters and is present in mammalian expression vectors. The advantage of CMV is the high-level constitutive expression in mostly all human tissues [Fitzsimons et al., 2002].
 +
<h3>References</h3>
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<b>DiPrimio, Asokan, Govindasamy, Agbandje-McKenna, & Samulski</b>, June 2008. Surface loop dynamics in adeno-associated virus capsid assembly. Journal of virology, 167(1), 5178–5189 <br />
 +
<b>Fitzsimons, H.L., Bland, R.J. & During, M.J.</b>, June 2002. SPromoters and regulatory elements that improve adeno-associated virus transgene expression in the brain. Methods San Diego Calif, 28(2), pp.227-236. Available at: http://www.ncbi.nlm.nih.gov/pubmed/12413421. <br />
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<center><img src="https://static.igem.org/mediawiki/parts/a/a7/Freiburg10_Cap_proteins_VP1_2%263.png" width="600"
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height="auto"/></center>
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<b> Figure 1: The VP proteins are encoded in an overlapping open reading frame. </b>
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</html>
 
</html>
  

Latest revision as of 16:04, 13 January 2011

pCMV_[AAV2]VP123 (ViralBrick-453-BAP)

pCMV_(AAV2)-VP123ex (ViralBrick-453-BAP)
BioBrick Nr. BBa_K404241
RFC standard RFC 10
Requirement pSB1C3
Source
Submitted by [http://2010.igem.org/Team:Freiburg_Bioware FreiGEM 2010]















The Biotinylation Acceptor peptide motif, inserted into the 453 loop of pCMV_[AAV2]-VP123

Freiburg10 pCMV VP123 453-BAP.png

Usage and Biology

The Biotinylation Acceptor Peptide (BAP) is a 15 amino acid long peptide identified by Schatz J., 1993 in an library screening approach. This peptide with the sequence 5' - GLNDIFEAQKIEWHE - 3' contains a central lysine that is specifically biotinylated by the prokaryotic enzyme biotin holenzyme synthetase, encoded in the BirA gene of E. coli. Specific biotinylation of this peptide sequence can be performed in vivo by contransfecting a plasmid with the BirA gene as described for the AAV in Arnold et al.; 2006 or by an in vitro coupling approach using the purified Escherichia coli enzyme biotin ligase (BirA).

Capsid

The AAV capsid consists of 60 capsid protein subunits. The three cap proteins VP1, VP2, and VP3 are encoded in an overlapping reading frame. Arranged in a stoichiometric ratio of 1:1:10, they form an icosahedral symmetry. The mRNA encoding for the cap proteins is transcribed from p40 and alternative spliced to minor and major products. Alternative splicing and translation initiation of VP2 at a nonconventional ACG initiation codon promote the expression of VP1, VP2 and VP3. The VP proteins share a common C terminus and stop codon, but begin with a different start codon. The N termini of VP1 and VP2 play important roles in infection and contain motifs that are highly homologous to the phospholipase A2 (PLA2) domain and nuclear localization signals (BR)(+).


CMV promoter is derived from human Cytomegalovirus, which belongs to Herpesvirus group. All family members share the ability to remain in latent stage in the human body. CMV is located upstream of immediate-early gene. However, CMV promoter is an example of widely used promoters and is present in mammalian expression vectors. The advantage of CMV is the high-level constitutive expression in mostly all human tissues [Fitzsimons et al., 2002].

References

DiPrimio, Asokan, Govindasamy, Agbandje-McKenna, & Samulski, June 2008. Surface loop dynamics in adeno-associated virus capsid assembly. Journal of virology, 167(1), 5178–5189
Fitzsimons, H.L., Bland, R.J. & During, M.J., June 2002. SPromoters and regulatory elements that improve adeno-associated virus transgene expression in the brain. Methods San Diego Calif, 28(2), pp.227-236. Available at: http://www.ncbi.nlm.nih.gov/pubmed/12413421.
Figure 1: The VP proteins are encoded in an overlapping open reading frame.

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 2447
    Illegal XhoI site found at 698
    Illegal XhoI site found at 884
  • 23
    COMPATIBLE WITH RFC[23]
  • 25
    INCOMPATIBLE WITH RFC[25]
    Illegal NgoMIV site found at 665
  • 1000
    INCOMPATIBLE WITH RFC[1000]
    Illegal BsaI site found at 2973
    Illegal SapI site found at 1833