Part:BBa_K5396010

T7-Nt-BaCBM2-Cys

This composite part codes for the N-terminal of Spidroin Nt2RepCt fused to our BaCBM2-Cys, controlled by T7-LacO promoter and is expressed in the presence of IPTG.

Usage and Biology

Nt2RepCt

Spidroins are the primary proteins that compose spider silk. This part contains the N-terminal domain, which is involved in the initial formation of silk fibers and is crucial for the protein's solubility and stability, and is fused to the BaCBM2 protein, that has the ability to bind to plastics.

BaCBM2-Cys

This CBM2, or Carbohydrate-Binding Module 2, is a protein sourced from Bacillus anthracis. It belongs to a broader family of carbohydrate-binding modules that are crucial for the degradation of polysaccharides. These modules are important to break down complex carbohydrates, enabling microorganisms to convert them into usable energy sources.

The cysteine modification allows a strong interaction between the protein and our sensor surface, due to the affinity between the SH group and the Au(111) surface. This increase in interaction with the sensor is essential for amplifying the signal of microplastics in electrochemical measurements.

Part Generation

The Nt-BaCBM2-Cys was generated through Gibson Assembly, using as a template the previously constructed parts:

• BBa_K5396007
• and BBa_K5396011

This Biobrick consists of the following basic parts:

• BBa_J435350
• BBa_J435345
• BBa_K5396005
• and BBa_J428069

Expression and Purification

Sequence and Features

Assembly Compatibility:

• 10
  INCOMPATIBLE WITH RFC[10]

  Illegal XbaI site found at 96
  
• 12
  COMPATIBLE WITH RFC[12]
• 21
  INCOMPATIBLE WITH RFC[21]

  Illegal BglII site found at 30
  
• 23
  INCOMPATIBLE WITH RFC[23]

  Illegal XbaI site found at 96
  
• 25
  INCOMPATIBLE WITH RFC[25]

  Illegal XbaI site found at 96
  
• 1000
  COMPATIBLE WITH RFC[1000]