
Associate Professor of Biochemistry
B.S. Ed. (Zoology), University of Florida,
1965
M.S. (Zoology), University of Florida, 1968
Ph.D. (Biology/Biochemistry), The Johns Hopkins University, 1974
Green
fluroescent protein and applications of bioluminescence
Our current research interests fall
into two categories: 1) the elucidation of biochemical components in
the bioluminescence of coelenterates and 2) the application of this
knowledge in developing practical genetically-based assays for gene
expression.
1. We are currently completing the characterization of a bioluminescence
energy transfer system involving a unique chromoprotein known as the
green-fluorescent protein (Chalfie et al., 1994). Fluorescence involves
a post-translationally modified tripeptide in the primary sequence of
the protein (Cody et al., 1993). We have recently proposed an evolutionary
relationship between the biosynthetic pathways of luciferin and GFP
(Ward & McCapra, 1993).
2. The GFP gene has been cloned and is expressed as an inheritable fluorescent
cell marker in all species tested. (Chalfie et al., 1994). We now have
reason to believe that luciferin is also genetically encoded. Thus,
it may be possible to establish a nearly universal in vivo bioluminescence
assay for gene promotion, induction and repression and to design a bioluminescent
"Ames test" or "Rec-assay" based on the coelenterate
bioluminescence system.
Recent Publications
- Chalfie, M.,
Tu, Y., Euskirchen, G., Ward, W.W. and Prasher, D.C. (1994). Green
fluorescent protein as a marker for gene expression. Science 263:802-805.
- Cody, C.W., Prasher,
D.C., Westler, W.M., Prendergast, F.G. and Ward, W.W. (1993). Chemical
structure of the hexapeptide chromophore of the Aequorea green-fluorescent
protein. Biochemistry 32:1212-1218.
- Prasher, D.C.,
Eckenrode, V.K., Ward, W.W., Prendergast, F.G. and Cormier, M.J. (1992).
Primary structure of the Aequorea victoria green-fluorescent protein.
Gene 111:229-233.
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