Mark S Dunkak

Title: **Mark S Dunkak: Innovator in Microbial Production of Tryptophan**

Introduction

Mark S Dunkak, an esteemed inventor based in Decatur, Illinois, has made notable contributions to biotechnology through his innovative work on the production of tryptophan using microorganisms. His patent reflects cutting-edge advancements in recombinant DNA technology.

Latest Patents

Dunkak holds a patent for the "Production of tryptophan by microorganisms." This patent details an improved recombinant DNA plasmid composed of a DNA vector alongside DNA fragments that include the tryptophan operon from *E. coli*, the aroG gene from *E. coli*, and the serA gene from *E. coli*. The process involves transforming this plasmid into a microorganism of the *Escherichia coli* species, followed by culturing the microorganisms in a specific medium. The L-tryptophan that accumulates in the culture is then recovered, showcasing a significant step in biotechnological production methods.

Career Highlights

Mark S Dunkak has worked with the Archer Daniels Midland Company, a leading player in global food processing and agricultural services. His position allows him to engage in impactful research and development efforts which contribute to the company's extensive portfolio of agricultural and food products.

Collaborations

Throughout his career, Dunkak has collaborated with notable colleagues, including Richard D Dancey and Thomas W McMullin. These collaborations underscore the importance of teamwork in the innovation process, particularly in the fields of biotechnology and microbial research.

Conclusion

Mark S Dunkak's contributions to the field of biotechnology through his patent on tryptophan production have paved the way for advancements in microbial processes. His affiliation with Archer Daniels Midland Company and his collaborations with fellow innovators highlight the collaborative nature of scientific discovery and the continuous pursuit of innovation in production methodologies.