Translational_Unit

Part:BBa_K2194004

Designed by: Catherine Dunaway, Anna Guseva   Group: iGEM17_Rice   (2017-10-23)


Sulfate Transport System w/ Negative Feedback for Membrane Stress

This transcriptional unit codes for the genetic parts necessary to bind and transport chromate, sulfate, and related species across the cell membrane. BioBrick BBa_K2194004 is a composite part composed of negative feedback membrane stress promoter PgntK (BBa_K2194002), a synthetic RBS, cysPUWA proteins (BBa_K2194003), Elowitz RBS (BBa_B0034), sulfate binding protein sbp (BBa_K2194001), and a synthetic terminator.

Biology and Usage

Refer to the registry pages for PgntK (BBa_K2194002), cysPUWA proteins (BBa_K2194003), Elowitz RBS (BBa_B0034), and sulfate binding protein sbp (BBa_K2194001) for detailed biology.

Figure 1 shows the effect of cysPUWA overexpression on the cells' susceptibility to Cr(VI). The lower growth rate for cysPUWA transformants in the presence of Cr(VI) indicates a higher rate of chromium import and increased toxicity to the cell.


Cys growth.png

Figure 1: Effect of Chromate on E. coli Growth



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 1480
  • 23
    COMPATIBLE WITH RFC[23]
  • 25
    INCOMPATIBLE WITH RFC[25]
    Illegal AgeI site found at 2296
  • 1000
    COMPATIBLE WITH RFC[1000]



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