Part:BBa_K2973005
32B Toehold Switch_Beta-lactamase_no signal peptide
This composite part consists of T7 Promoter (BBa_J64997) and T7 Terminator (BBa_K731721), the Ribosomal Binding Site (AGAGGAGA), the 32B Toehold Switch (Pardee et al., 2016) and the CDS of the Beta-lactamase without the signal peptide.
Beta lactamase (EC 3.5.2.6) is a small monomeric enzyme(29kDa) that is produced by bacteria and gives them resistance to antibiotics with β-lactam ring because of its ability to hydrolyze the amid bond in the β-lactam ring. This ability can be exploited in order to use b-lactamase as a protein reporter by providing the enzyme with its chromogenic substrate Nitrocefin. Nitrocefin is a chromogenic cephalosporin first reported in 1972 as a novel and straightforward substrate used to detect bacteria resistant to β-lactam antibiotics. Normally, a nitrocefin solution has yellow color, but after its hydrolysis by b-lactamase , the color of the solution turns red, allowing in that way the detection of the enzyme.
Sequence and Features
- 10COMPATIBLE WITH RFC[10]
- 12COMPATIBLE WITH RFC[12]
- 21COMPATIBLE WITH RFC[21]
- 23COMPATIBLE WITH RFC[23]
- 25COMPATIBLE WITH RFC[25]
- 1000COMPATIBLE WITH RFC[1000]
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