Facile genetic and biochemical manipulation coupled with rapid cell growth and low cost of growth media has established the yeast Saccharomyces cerevisiae as a versatile workhorse. This article describes the use of yeast expression systems for the overproduction of complex multipolypeptide replication factors. The regulated overexpression of these factors in yeast provides for a readily accessible and inexpensive source of these factors in large quantities. The methodology is illustrated with the five-subunit replication factor C. Whole-cell extracts are prepared by blending yeast cells with glass beads or frozen yeast with dry ice. Procedures are described that maximize the yield of these factors while minimizing proteolytic degradation.

• PMID: 10454996
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Journal Article | Research Support, U.S. Gov't, P.H.S.

Authors

Burgers PM

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