Part:BBa_K5302027

pBBR-INP-ZVEGF

This work is derived from pBBR1MCS-INP-mCherry and PUC19-ZVEGF-V114-V107-peptide, and it has undergone codon optimization. This composite part combines INP(about 30kda) and ZVEGF(approximately 6kda), we succeeded in transferring this plasmid into Escherichia coli Nissle 1917 and let it express ZVEGF. The plasmid uses lac promotor and has kanamycin resistence.

---

ZVEGF is a 59-residue three-helix peptide that was developed by Fedorova et al. by randomizing 9 residues on helices 1 and 2 of the Z-domain scaffold via phage display, followed by selection for binding to the VEGF8-109 dimer. A co-crystal structure of ZVEGF with VEGF8-109 shows that the engineered Z-domain adopts the expected three-helix bundle tertiary structure and engages the receptor-recognition sites on the VEGF dimer through a surface formed by helices 1 and 2 of ZVEGF. It shows great affinity with VEGF(Ki=0.41 μM).We used pBBR1MCS-2 plasmid as a backbone and transfered ZVEGF into Escherichia coli Nissle 1917, and finally succeeded in expressing ZVEGF.

Figure 1. ZVEGF sequence

Figure 2. VEGF-binding site of ZVEGF

Sequence and Features

Assembly Compatibility:

• 10
  INCOMPATIBLE WITH RFC[10]

  Illegal EcoRI site found at 4458
  Illegal XbaI site found at 3189
  Illegal PstI site found at 2016
  Illegal PstI site found at 3177
  
• 12
  INCOMPATIBLE WITH RFC[12]

  Illegal EcoRI site found at 4458
  Illegal PstI site found at 2016
  Illegal PstI site found at 3177
  Illegal NotI site found at 1057
  
• 21
  INCOMPATIBLE WITH RFC[21]

  Illegal EcoRI site found at 4458
  Illegal BglII site found at 1803
  Illegal BamHI site found at 3195
  
• 23
  INCOMPATIBLE WITH RFC[23]

  Illegal EcoRI site found at 4458
  Illegal XbaI site found at 3189
  Illegal PstI site found at 2016
  Illegal PstI site found at 3177
  
• 25
  INCOMPATIBLE WITH RFC[25]

  Illegal EcoRI site found at 4458
  Illegal XbaI site found at 3189
  Illegal PstI site found at 2016
  Illegal PstI site found at 3177
  Illegal NgoMIV site found at 2467
  Illegal NgoMIV site found at 2750
  Illegal NgoMIV site found at 3616
  Illegal NgoMIV site found at 5123
  Illegal AgeI site found at 4963
  
• 1000
  INCOMPATIBLE WITH RFC[1000]

  Illegal BsaI.rc site found at 1379
  Illegal SapI.rc site found at 2316
  Illegal SapI.rc site found at 2526