Part:BBa_C0160

autoinducer inactivation enzyme aiiA (no LVA)

same as Part:BBa_C0060 except no LVA tag

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
  INCOMPATIBLE WITH RFC[25]

  Illegal AgeI site found at 99
  
• 1000
  COMPATIBLE WITH RFC[1000]

Characterization done by ETH Zurich 2015

Check the characterization done by ETH Zurich 2015 iGEM team in the experience page.

Functional Parameters: Austin_UTexas

BBa_C0160 parameters

Burden Imposed by this Part:

Burden Value: 0.8 ± 5.7%

Burden is the percent reduction in the growth rate of E. coli cells transformed with a plasmid containing this BioBrick (± values are 95% confidence limits). This BioBrick did not exhibit a burden that was significantly greater than zero (i.e., it appears to have little to no impact on growth). Therefore, users can depend on this part to remain stable for many bacterial cell divisions and in large culture volumes. Refer to any one of the BBa_K3174002 - BBa_K3174007 pages for more information on the methods, an explanation of the sources of burden, and other conclusions from a large-scale measurement project conducted by the 2019 Austin_UTexas team.

This functional parameter was added by the 2020 Austin_UTexas team.

Kinetic Parameters and Enzyme Activity in different conditions: WHU-China 2020

BBa_C0160 parameters

Fig1: Kinetic parameters of AHL-lactonase against different kinds of AHLs. a: The data are means from triplicate experiments. b: ND indicates not determined due to poor solubility of the substrate in phosphate buffer. c: 3-Hydroxylbutanoyl L-homoserine lactone.

Fig2: Effect of pH (A), temperature (B), and metal ions (C) on aiiA activity.

The Michaelis constant (Km) and kcat value of an enzyme have always been important as they show the efficiency of the enzyme towards its substrate. So they are frequently used to decide whether the enzyme is “good” or not according to specific situation. And what is also important is the conditions influencing the enzyme activity, such as temperature, PH, metal ions and so on. Here we add the data we obtain from literature[1] about aiiA gene, including kinetic parameters towards different substrates and its activity changes versus different conditions. Further users can conduct their experiments or models based on these data then.

Reference:

1.Wang L H, Weng L X, et al., Specificity and Enzyme Kinetics of the Quorum-quenching N-Acyl Homoserine Lactone Lactonase (AHL-lactonase) [J]. Journal of Biological Chemistry, 2004, 279(14):13645-51.