Coding

Part:BBa_K1051118

Designed by: Jinchun Zhang   Group: iGEM13_Shenzhen_BGIC_ATCG   (2013-07-12)

ScPEX21p；baking yeast targeting peptide to peroxisome ;

After added with 23 prefix and suffix, it can be used as a transporter to the peroxisome of baking yeast. Also, when joining with different flourescent proteins, they can light the inner membrane using such proteins.

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]


principle

The import of post-translational matrix protein into peroxisomes depends on either of the two peroxisomal targeting signals (PTS), PTS1 and PTS2. PTS2-driven import is facilitated by a complex in the membrane. Under oleic acid-inducing growth conditions, there is a ternary core complex of approximate 150 kDa in the cytosol, which consists of Fox3p,Pex7p and Pex18p. Fox3p is imported as a dimer, while other two are bind in monomeric forms.

As study mentioned there are four steps involved in PTS2-driven import. The first step is the recognition of dimerized Fox3p by Pex7p through its PTS2 in the cytosol. In a second step, the Pex7p–Fox3p complex interacts with Pex18p, which targets the PTS2 pre-import complex to the peroxisomal membrane. The third step is the docking process, involving the interaction between Pex7p and the integral membrane protein Pex13p. As a final step of these early steps in the PTS2 import cascade, PTS2 receptor dissociation takes place during or after its assembly into large oligomeric complexes containing Pex14p and Pex13p. Pex18p remains at the peroxisomal membrane in the form of a large-molecular-weight complex in conjunction with Pex14p and/or Pex13p, from where it might be released to the cytosol(Grunau et al., 2009).

[edit]
Categories
Parameters
n/aScPEX21p；baking yeast targeting peptide to peroxisome ;