Part:BBa_K2036024

placm-pRE-RBS-Cro-RBS-CII-TT-patp2-RBS-CI-TT-pR-RBS-CIII-RBS-iLDH-TT-pRM-RBS-beta-galactosidase

placm-pRE-RBS-Cro-RBS-CII-TT-patp2-RBS-CI-TT-pR-RBS-CIII-RBS-iLDH-TT-pRM-RBS-beta-galactosidase
 It promotes lysogeny through activation of three phage promoters p(E), p(I) and p(aQ), recognizing a direct repeat sequence TTGCN6TTGC at each. It is an unstable protein in vivo, being rapidly degraded by the host protease HflB (FtsH). This instability is essential for the function of CII in the lysis-lysogeny switch. From NMR and limited proteolysis we show that about 15 C-terminal residues of CII are highly flexible, and may act as a target for proteolysis in vivo. From in vitro transcription, isothermal calorimetry and gel chromatography of CII (1-97) and its truncated fragments CIIA (4-81/82) and CIIB (4-69), we find that residues 70-81/82 are essential for (a) tetramer formation, (b) operator binding and (c) transcription activation. Presumably, tetramerization is necessary for the latter functions.

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 3212
  Illegal BamHI site found at 3251
  Illegal BamHI site found at 3943
  
• 23
  COMPATIBLE WITH RFC[23]
• 25
  COMPATIBLE WITH RFC[25]
• 1000
  COMPATIBLE WITH RFC[1000]