Part:BBa_K2114001

aGFPnano_HA_aHelix_cotZ

N-terminal fusion of anti-GFP nanobody to spore crust gene cotZ by an alpha-helical linker.

Usage and Biology

Figure 1: Schematic representation of the resulting fusion protein.

This part includes the anti-GFP nanobody (describted by Kubala et al. [Ref]) fused by an alpha helical linker [Ref] to the B. subtilis spore crust protein CotZ in order to be displayed on the spore surface. The hemagglutinin epitope tag was included in the fusion construct for convenient detection by specific anti-HA antibodies. The cotZ gene was amplified from the genome of B. subtilis and the anti-GFP nanobody was amplified from an expression plasmid. The HA tag and the alpha helical linker were introduced by primer extensions. Both PCR fragments were assembled by Gibson cloning into pSB1C3. The fusion construct can released by XbaI and PstI and cloned alongside with an appropriate promoter into an integration vector for B. subtilis by 3A assembly.

Characterization

I) Expression: WB

Figure 2: Expression analysis of spore coat proteins.

II) Localizaion: FACS antiHA-Alexa647

Figure 3: FACS analysis of fusion constructs.

III) Binding of GFP: FACS

References

1. Kubala et al. 2. Surface display alpha helical linker Sequence and Features

Assembly Compatibility:

• 10
  COMPATIBLE WITH RFC[10]
• 12
  COMPATIBLE WITH RFC[12]
• 21
  INCOMPATIBLE WITH RFC[21]

  Illegal BglII site found at 465
  
• 23
  COMPATIBLE WITH RFC[23]
• 25
  COMPATIBLE WITH RFC[25]
• 1000
  COMPATIBLE WITH RFC[1000]