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Eric C. Niederhoffer, Ph.D. Associate Professor of Biochemistry and Molecular Biology Southern Illinois University School of Medicine 600 Agriculture Drive, Carbondale, IL 62901-6503 Rm 112 Lindegren, 618-453-6467 eniederhoffer@siumed.edu Copyright 2000- , E.C. Niederhoffer. All Rights Reserved. All trademarks and copyrights are the property of their respective owners.

Cro repressor in the absence (5cro) and presence of DNA (6cro) from bacteriophage lambda

• What structural elements are present in the protein?
• What is the subunit composition?
• What is the distance between protein and DNA?
• What comparisons can be made between the two structures?

Ohlendorf, D. H., D. E. Tronrud, and B. W. Matthews. 1998. Refined structure of Cro repressor protein from bacteriophage lambda suggests both flexibility and plasticity. J. Mol. Biol. 280:129-136.

Albright, R. A., and B. W. Matthews. 1998. Crystal structure of lambda-Cro bound to a consensus operator at 3.0 Å resolution. J. Mol. Biol. 280:137-151.

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