Commercial Scale Production of Cvi Endonucleases

Award Information
Agency: Department of Health and Human Services
Branch: N/A
Contract: N/A
Agency Tracking Number: 22250
Amount: $454,680.00
Phase: Phase II
Program: SBIR
Awards Year: 1995
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
4129 Holdrege, Lincoln, NE, 68503
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Robert M. Nelson
 (402) 466-0680
Business Contact
Phone: () -
Research Institution
Chlorella virus (Cvi) restriction nucleases are a large, untapped source of gene mapping tools that have considerable commercial potential. Unlike bacterial restriction endonucleases, which recognize 4 to 8 base pair (bp) DNA target sequences, Cvi endonucleases define unique 2 to 4 bp cleavage sites and lend themselves to a variety of novel fine structure gene mapping applications. However, at the present time technology transfer from laboratory-scale enzyme identification and purification has not proceeded to large-scale commercial production. We will begin the development of large-scale production of three chlorella virus DNA restriction endonucleases (R.CviJI cleaves PuG/CPY, R.CviRI cleaves TG/CA, and R.CviAII cleaves C/ATG) for which there is a clearcut demand and cannot be isolated from bacteria. Two independent approaches toward large-scale (> 100,000 enzyme units) commercial production will be examined. (i) Increased production will be sought from virus-infected algae. (ii) The DNA restriction endonuclease gene will be cloned and overexpressed in E. coli. These studies will serve as an instructive model for the commercial scale production of a major new class of gene mapping enzymes.

* Information listed above is at the time of submission. *

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