The adhesive polyphenolic protein from marine mussels is a dopa- containing protein with a significant potential for metal complexation at pH 6-10. This holds promise for the development of new bioadhesives, because current adhesives are subverted by the presence of water on surfaces. In complexing or chelating metals on dental or orthopaedic implants, for example, dopa- containing proteins could transcend the weak boundary layer formed by water on the metal surface and displace oxides always present on metal surfaces in a moist environment. This proposal attempts to 1) demonstrate that specific adsorption of dopa-containing proteins and peptides can be quantitatively interpreted in terms of surface coordination processes; 2) illustrate with experimentally determined surface complexation equilibrium constants, the extent of adsorption of dopa-peptides can be predicted as a function of pH; 3) to determine whether the tendency of forming surface oxide complexes is similar to that for forming complexes with metal ions in solution. The methodology for these studies will be by potentiometric and spectroscopic monitoring of metal-ligand titrations.

Agency
National Institute of Health (NIH)
Institute
National Institute of Dental & Craniofacial Research (NIDCR)
Type
Research Project (R01)
Project #
5R01DE008058-04
Application #
3221844
Study Section
Biochemistry Study Section (BIO)
Project Start
1986-09-01
Project End
1990-08-31
Budget Start
1989-09-01
Budget End
1990-08-31
Support Year
4
Fiscal Year
1989
Total Cost
Indirect Cost
Name
University of Delaware
Department
Type
Schools of Arts and Sciences
DUNS #
059007500
City
Newark
State
DE
Country
United States
Zip Code
19716