Part:BBa_K2525015

PsrpR (SrpR Repressible Promoter)

This part contains a promoter that is repressible by the SrpR repressor, which is a high cooperativity repressor (n = 3.2).

This can be used as a part of a genetic circuit, where the SrpR repressor is present. The high cooperativity of this part is of great significance to synthetic biology, as it can be used to give steeper response curves for repression. Ideally, when we tend to look at genetic elements as digital logic tools, we require steep transitions of protein levels from 0 to 1 or 1 to 0 (representing and ON and OFF state). However, due to various limitations in biological systems, the response is often in the form of a gradient and not a steep curve. Due to its high cooperativity, SrpR can give a better and steeper curve than most traditional repressors. This is highly desirable.

Sequence and Features

Assembly Compatibility:

• 10
  COMPATIBLE WITH RFC[10]
• 12
  INCOMPATIBLE WITH RFC[12]

  Illegal NheI site found at 20
  
• 21
  COMPATIBLE WITH RFC[21]
• 23
  COMPATIBLE WITH RFC[23]
• 25
  COMPATIBLE WITH RFC[25]
• 1000
  COMPATIBLE WITH RFC[1000]