Part:BBa_K5374022

COMP-EGFP (Cartilage Oligomeric Matrix Protein). A protein that binds and stabilizes collagen struct

COMP binds to collagen, helping maintain ECM stability in tissues like cartilage and tendons. The fusion with EGFP allows for evaluating the effect of COMP on protein functionality, aiding in screening for its use in controlled release systems for tissue repair.

The fluorescence data were obtained by expressing various EGFP fusion proteins in E. coli, diluting each culture to an equal cell density. Fluorescence intensity was measured for each group, and the fluorescence ratio relative to EGFP (used as a standard) was calculated. The figure shows these normalized fluorescence values for each fusion protein.

Figure 1.1 The fluorescence activity of each fusion protein

The fluorescence activity of each fusion protein was tested to evaluate whether the CBDs affected EGFP activity. The relative fluorescence values of the eight CBD-EGFP fusion proteins were measured to assess the impact of the collagen-binding domains (CBDs) on EGFP activity. As shown in the graph:

• SPARC/OD-EGFP, CBD MMPs-EGFP, DB-EGFP, VWF-A Domain-EGFP, and FTD-EGFP exhibited fluorescence values close to or higher than that of the control EGFP, indicating that these CBDs did not significantly affect the bioactivity of EGFP.
• DDR-EGFP, AGR-EGFP and COMP-EGFP showed slightly lower fluorescence values, suggesting some impact on EGFP activity, but still maintaining measurable fluorescence.

Overall, the majority of CBDs retained sufficient EGFP activity, which confirms that they can be used in further experiments for controlled release without significantly impairing the functionality of the fusion proteins. These results support the selection of CBDs that balance collagen binding with maintaining protein bioactivity.

Sequence and Features

Assembly Compatibility:

• 10
  INCOMPATIBLE WITH RFC[10]

  Illegal PstI site found at 133
  
• 12
  INCOMPATIBLE WITH RFC[12]

  Illegal NheI site found at 1306
  Illegal PstI site found at 133
  
• 21
  COMPATIBLE WITH RFC[21]
• 23
  INCOMPATIBLE WITH RFC[23]

  Illegal PstI site found at 133
  
• 25
  INCOMPATIBLE WITH RFC[25]

  Illegal PstI site found at 133
  Illegal AgeI site found at 355
  
• 1000
  INCOMPATIBLE WITH RFC[1000]

  Illegal BsaI.rc site found at 1949