Part:BBa_K2963032

racE- encoding racemase

This part contains the racE racemase gene, which was constructed using the tac (BBa_K864400) promoter, rbs (BBa_K2963006), racE gene (BBa_K2963004) and the T7 terminator (BBa_K2598024). This part was compared with the other part (BBa_K2963033) which contained another lac operator follwowing the tac promoter（BBa_K864400）.Simultaneously, the rest basic parts are the same. The racemase activity data and real-time PCR data were used to characterize the composite part. And we compared the different expression levels of racE gene of the two composite (BBa_K2963033 and BBa_K2963032）.

Characterization

Figure 1 The expression level of the racemase gene racE at 8h,16h,24h decreased by 29.99%, 58.86% and 62.34% respectively. The results show that the expression intensity of racE was effectively reduced at each transcriptional stage by the tandem of two lacOs compared to one lacO.

Usage and Biology

The racE gene is a type of racemase gene from Bacillus subtilis while in Bacillus licheniformis is named glr. According to previous reports, glr has two characters against L-glutamic acid, one is weak affinity and the other is strong catalytic properties. Sequence and Features

Assembly Compatibility:

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

  Illegal NheI site found at 911
  
• 21
  COMPATIBLE WITH RFC[21]
• 23
  COMPATIBLE WITH RFC[23]
• 25
  COMPATIBLE WITH RFC[25]
• 1000
  COMPATIBLE WITH RFC[1000]

Functional Parameters

打算阿迪斯阿萨