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High expression of human amelogenin in E. coli
D Deutsch1, E Chityat, M Hekmati
1Department of Oral Biology, Hebrew University Hadassah, Faculty of Dental Medicine, Jerusalem, Israel.
Advances in Dental Research
|November 1, 1996
Summary
Researchers successfully produced and characterized human amelogenin, a key tooth enamel protein, using recombinant DNA technology in E. coli. This advancement aids in understanding tooth development and enamel formation.
Area of Science:
- Biochemistry
- Molecular Biology
- Dental Research
Background:
- Amelogenin is the major protein in developing tooth enamel.
- Understanding amelogenin structure and function is crucial for dental research and regenerative dentistry.
Purpose of the Study:
- To prepare a human cDNA encoding for the 175-amino-acid human amelogenin.
- To over-express the human amelogenin protein in E. coli.
- To characterize the expressed human amelogenin protein.
Main Methods:
- Reverse Transcription Polymerase Chain Reaction (RT-PCR) was used to obtain human amelogenin cDNA from tooth bud mRNA.
- The cDNA was sub-cloned into the pGEX-KG expression plasmid.
- Over-expression was performed in E. coli.
- Characterization involved SDS-PAGE, Western blotting, and N-terminal amino acid sequencing.
Main Results:
- Successfully prepared human amelogenin cDNA.
- Achieved over-expression of the 175-amino-acid human amelogenin protein in E. coli.
- Confirmed the identity and integrity of the expressed protein using SDS-PAGE, Western blotting, and N-terminal sequencing.
Conclusions:
- The study successfully established a method for producing and characterizing recombinant human amelogenin.
- This recombinant protein serves as a valuable tool for further research into enamel formation and related dental conditions.