Composite

Part:BBa_K3182103

Designed by: Oliver Hild Walett   Group: iGEM19_Linkoping_Sweden   (2019-07-13)
Revision as of 17:40, 23 August 2019 by Olle111 (Talk | contribs)

Sequence and Features


Assembly Compatibility:
  • 10
    COMPATIBLE WITH RFC[10]
  • 12
    COMPATIBLE WITH RFC[12]
  • 21
    INCOMPATIBLE WITH RFC[21]
    Illegal BamHI site found at 580
  • 23
    COMPATIBLE WITH RFC[23]
  • 25
    COMPATIBLE WITH RFC[25]
  • 1000
    COMPATIBLE WITH RFC[1000]

pT7-CBDcipA-PlyF307-SQ8C

Introduction

This part consists of a cellulose binding domain (CBD) from Clostridium thermocellum cellulose scaffolding protein (CipA) and is a central part Clostridium thermocellum's cellusome. The CBD was fused to sfGFP in this part to easily track the binding capacities and to test our release mechanism. The CBD-sfGFP were fused using a flexible GS-linker (-GGGGSGGGGS-). A thrombin cleavage site (-LVPRGS-) was added to the end of the linker and its breakage will leave a glycine and serine attached to the N-terminal of the fusion protein.

An internal BamHI recognition sequence (RS) has been added to enable changeable fusion proteins. BamHI was chosen because its RS codes for glycine and serine, fitting it to the end of the thrombin site. It is also cost-effective enzyme and is unaffected by methylated DNA.

Acinetobacter baumannii

CBDcipA and Acinetobacter phage muramidase crystal structure

Figure X. Crystal structure of CBDcipA with a resolution of 1.75 Å which were solved by [http://www.ncbi.nlm.nih.gov/pmc/PMC452321 Tormo et al. 1989]. PDB code 1NBC. In red, W118, R112, D56, H57 and Y67, thought to be the surface which interacts strongly with cellulose.
Figure Y. Crystal structure of PlyF307 / Acinetobacter phage muramidase with a resolution of 1.2 Å which were solved by [http://www.ncbi.nlm.nih.gov/pubmed/?term=29882827 Sykilinda et al. 2018]. PDB code 6ET6. In red the C-terminal alpha-helix can be seen, which has a proposed role of activating the muramidase against live bacterial cells from inside or outside of the cells at critical concentration.



























Expression system

The part has a very strong expression with a T7 promotor (BBa_I719005) as well as a 5'-UTR (BBa_K1758100) region which has been shown to further increase expression in E. coli (BBa_K1758106), ([http://www.ncbi.nlm.nih.gov/pubmed/2676996 Olins et al. 1989]), ([http://www.ncbi.nlm.nih.gov/pubmed/23927491 Takahashi et al. 2013]). Both this part and the part were sfGFP was changed for AsPink (BBa_K3182000) showed great expression.

Figure B.

Usage and Biology

Figure B.



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