Press Release

John Yates III, PhD Joins Scientific Advisory Board of Protein Discovery, Inc.

Knoxville, Tennessee, October 17, 2006—Protein Discovery, Inc., a privately held life sciences company, today announced that John Yates III, PhD has joined the company's scientific advisory board. Dr. Yates is the eighth member of Protein Discovery's scientific advisory board and the third to be appointed this year.

Dr. Yates is a professor of cell biology and the principal investigator of the Proteomic Mass Spectrometry Laboratory at the Scripps Research Institute in La Jolla, California. Dr. Yates is well known for his role in making mass spectrometry the central analysis method of proteomics research. In pursuit of his own research studies into cancer, heart disease, infectious disease, and many other research areas, he has developed popular proteomics methods such as tandem mass spectrometry for peptide sequencing, the multi-dimensional protein identification technique (MudPIT), and "shotgun" proteomics. Dr. Yates is also the author of SEQUEST, a powerful and essential computer program for analyzing protein mass spectra.

"Protein Discovery is developing reagents and tools that I view as critical for the advancement of proteomics," said Dr. Yates. "I'm thrilled to be associated with the company."

Chuck Witkowski, chief executive officer of Protein Discovery, said, "Our association with John Yates is of great importance and value to us. His insight and experience represent a deep resource of knowledge and ideas we can apply to our development programs for enabling mass spec sample preparation products. We feel very fortunate to be able to formalize our relationship with Dr. Yates with his addition to our scientific advisory board."

About Protein Discovery
Protein Discovery, Inc. is a privately held life sciences company developing bioanalytical sample preparation solutions to meet the needs of life science researchers and drug development scientists for high quality mass spectrometry data. For additional information, please visit www.proteindiscovery.com.

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