Download MendeleyRefined structure of Cro repressor protein from bacteriophage lambda suggests both flexibility and plasticity.
Ohlendorf, D.H., Tronrud, D.E., Matthews, B.W.(1998) J Mol Biol 280: 129-136
- PubMed: 9653036 Search on PubMed
- DOI: https://doi.org/10.1006/jmbi.1998.1849
- Primary Citation of Related Structures:
5CRO - PubMed Abstract:
- Different Interactions Used by Cro Repressor in Specific and Nonspecific DNA Binding
Takeda, Y., Kim, J.G., Caday, C.G., Steers Junior, E., Ohlendorf, D.H., Anderson, W.F., Matthews, B.W.
(1986) J Biol Chem 261: 8608 - Use of Protein Sequence and Structure to Infer Distant Evolutionary Relationships
Brennan, R.G., Weaver, L.H., Matthews, B.W.
(1986) Chem Scr 26B: 251 - The Structure of Cro Repressor Protein
Takeda, Y., Ohlendorf, D.H., Anderson, W.F., Matthews, B.W.
(1985) Biological Macromolecules And Assemblies V 2: Nucleic Acids And Interactive Proteins 2: 234 - High Resolution Structural Studies of Cro Repressor Protein and Implications for DNA Recognition
Ohlendorf, D.H., Anderson, W.F., Takeda, Y., Matthews, B.W.
(1983) J Biomol Struct Dyn 1: 553 - DNA-Binding Proteins
Takeda, Y., Ohlendorf, D.H., Anderson, W.F., Matthews, B.W.
(1983) Science 221: 1020 - Comparison of the Structures of Cro and Lambda Repressor Proteins from Bacteriophage Lambda
Ohlendorf, D.H., Anderson, W.F., Lewis, M., Pabo, C.O., Matthews, B.W.
(1983) J Mol Biol 169: 757 - Crystallographic Data for Complexes of the Cro Repressor with DNA
Anderson, W.F., Cygler, M., Vandonselaar, M., Ohlendorf, D.H., Matthews, B.W., Kim, J., Takeda, Y.
(1983) J Mol Biol 168: 903 - Structural Studies of Protein-Nucleic Acid Interactions
Ohlendorf, D.H., Matthews, B.W.
(1983) Annu Rev Biophys Bioeng 12: 259 - How Does Cro Repressor Recognize its DNA Target Sites?
Matthews, B.W., Ohlendorf, D.H., Anderson, W.F., Fisher, R.G., Takeda, Y.
(1983) Trends Biochem Sci 8: 25 - Cro Repressor Protein and its Interaction with DNA
Matthews, B.W., Ohlendorf, D.H., Anderson, W.F., Fisher, R.G., Takeda, Y.
(1983) Cold Spring Harb Symp Quant Biol 47: 427 - Many Gene-Regulatory Proteins Appear to Have a Similar Alpha-Helical Fold that Binds DNA and Evolved from a Common Precursor
Ohlendorf, D.H., Anderson, W.F., Matthews, B.W.
(1983) J Mol Evol 19: 109 - The Molecular Basis of DNA-Protein Recognition Inferred from the Structure of Cro Repressor
Ohlendorf, D.H., Anderson, W.F., Fisher, R.G., Takeda, Y., Matthews, B.W.
(1982) Nature 298: 718 - Structural Similarity in the DNA-Binding Domains of Catabolite Gene Activator and Cro Repressor Proteins
Steitz, T.A., Ohlendorf, D.H., Mckay, D.B., Anderson, W.F., Matthews, B.W.
(1982) Proc Natl Acad Sci U S A 79: 3097 - Structure of the DNA-Binding Region of Lac Repressor Inferred from its Homology with Cro Repressor
Matthews, B.W., Ohlendorf, D.H., Anderson, W.F., Takeda, Y.
(1982) Proc Natl Acad Sci U S A 79: 1428 - Proposed Alpha-Helical Super-Secondary Structure Associated with Protein-DNA Recognition
Anderson, W.F., Takeda, Y., Ohlendorf, D.H., Matthews, B.W.
(1982) J Mol Biol 159: 745 - Structure of the Cro Repressor from Bacteriophage Lambda and its Interaction with DNA
Anderson, W.F., Ohlendorf, D.H., Takeda, Y., Matthews, B.W.
(1981) Nature 290: 754 - The Structure of a Repressor. Crystallographic Data for the Cro Regulatory Protein of Bacteriophage Lambda
Anderson, W.F., Matthews, B.W., Takeda, Y., Echols, H.
(1979) J Mol Biol 130: 507 - Amino Acid Sequence of Cro Regulatory Protein of Bacteriophage Lambda
Hsiang, M.W., Cole, R.D., Takeda, Y., Echols, H.
(1977) Nature 270: 275
The structure of the Cro repressor protein from phage lambda has been refined to a crystallographic R-value of 19.3% at 2.3 A resolution. The re fined model supports the structure as originally described in 1981 and provides a basis for comparison with the Cro-operator complex described in the accompanying paper ...
The structure of the Cro repressor protein from phage lambda has been refined to a crystallographic R-value of 19.3% at 2.3 A resolution. The re fined model supports the structure as originally described in 1981 and provides a basis for comparison with the Cro-operator complex described in the accompanying paper. Changes in structure seen in different crystal forms and modifications of Cro suggest that the individual subunits are somewhat plastic in nature. In addition, the dimer of Cro suggests a high degree of flexibility, which may be important in forming the Cro-DNA complex. The structure of the Cro subunit as determined by NMR agrees reasonably well with that in the crystals (root-mean-square discrepancy of about 2 A for all atoms). There are, however, only a limited number of intersubunit distance constraints and, presumably for this reason, the different NMR models for the dimer vary substantially among themselves (discrepancies of 1.3 to 5.5 A). Because of this variation it is not possible to say whether the range of discrepancies between the X-ray and NMR Cro dimers (2.9 to 7.5 A) represent a significant difference between the X-ray and solution structures. It has previously been proposed that substitutions of Tyr26 in Cro increase thermal stability by the "reverse hydrophobic effect", i.e. by exposing 40% more hydrophobic surface to solvent in the folded form than in the unfolded state. The refined structure, however, suggests that Tyr26 is equally solvent exposed in the folded and unfolded states. The most stabilizing substitution is Tyr26-->Asp and in this case it appears that interaction with an alpha-helix dipole is at least partly responsible for the enhanced stability.
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Organizational Affiliation:
Institute of Molecular Biology Howard Hughes Medical Institute and Department of Physics, University of Oregon, Eugene, OR, 97403-1229, USA.
