Abstract

The objectives of this study are to: 1) develop analytical techniques to characterize and quantify melanin polymers, 2) develop standard protocols for a) isolation of natural melanins and b) in vitro preparation of melanin chromophores. 3) compare and contrast, the melanin polymers prepared in vitro from tyrosinases isolated from various sources. 4) utilize biosynthetic methodology to examine the structures of mammalian melanins, and 5) elucidate the biosynthetic pathway between dopa and the polymeric melanin chromophores During the course of these studies carbon-13 and nitrogen-15 labeled melanins will be produced and characterized by NMR, ESR, FTIR and ESCA analyses.

  Funding Agency

Agency
National Institute of Health (NIH)
Institute
National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS)
Type
Research Project (R01)
Project #
7R01AR039420-08
Application #
2079519
Study Section
Bio-Organic and Natural Products Chemistry Study Section (BNP)
Project Start
1992-09-15
Project End
1993-09-30
Budget Start
1992-09-15
Budget End
1993-09-30
Support Year
8
Fiscal Year
1992
Total Cost
Indirect Cost

  Institution

Name
California State University Chico
Department
Chemistry
Type
Schools of Arts and Sciences
DUNS #
City
Chico
State
CA
Country
United States
Zip Code
95929

  Publications

Chedekel, M R; Ahene, A B; Zeise, L (1992) Melanin standard method: empirical formula 2. Pigment Cell Res 5:240-6
Zeise, L; Chedekel, M R (1992) Melanin standard method: titrimetric analysis. Pigment Cell Res 5:230-9
Zeise, L; Murr, B L; Chedekel, M R (1992) Melanin standard method: particle description. Pigment Cell Res 5:132-42
Chedekel, M R; Murr, B L; Zeise, L (1992) Melanin standard method: empirical formula. Pigment Cell Res 5:143-7