Coding
SacB-HE

Part:BBa_K143039

Designed by: Qin Qi   Group: iGEM08_Imperial_College   (2008-09-17)

SacB-Human Elastin (EP20-24-24) Fusion Protein


Elastin is a polymeric extracellular matrix protein found in tissues that require the ability to extend and recoil. Examples of elastin containing tissues include arteries, lungs, ligaments and skin. Construct EP20-24-24 for human elastin polypeptide consists of distinct exons which code for alternating hydrophobic regions and crosslinking domains from the human elastin polypeptide gene 1.

Under appropriate conditions of temperature and ionic strength, elastin polypeptide undergoes a self-aggregation process known as coacervation. Coacervation is usually induced by an increase in temperature and causes the protein to separate from the solution as a second phase. Unlike most proteins which undergo denaturation when the temperature of the solution increases, elastin polypeptides become more ordered through coacervation 2.


SacB is a signal peptide used in the Sec-SRP (secretory signal recognition particle) pathway by B. subtilis. Signal peptides are responsible for directing preproteins (secretory proteins with a signal peptide region attached) through an appropriate secretory pathway. In the case of the Sec-SRP signal peptide, they direct preproteins from the cytoplasm into the growth medium. SacB has been successfully used in the secretion of heterologous proteins such as acid-stable α-amylase, cystatin and interleukin-3 by B. subtilis 3.


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

<biblio>

  1. 1 pmid=11738083
  2. 2 pmid=11911775
  3. 3 pmid=16997527

</biblio>

[edit]
Categories
//chassis/prokaryote/Bsubtilis
//function/structures
Parameters
None