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Molecular Biology Commons

Open Access. Powered by Scholars. Published by Universities.®

1998

San Jose State University

Articles 1 - 2 of 2

Full-Text Articles in Molecular Biology

Rna Bulge Entropies Correlate With Peptide Binding Strengths For Hiv-1 And Biv Tar Rna Because Of Improved Conformational Access, Brooke Lustig, I Baharand, R L. Jernigan Jan 1998

Rna Bulge Entropies Correlate With Peptide Binding Strengths For Hiv-1 And Biv Tar Rna Because Of Improved Conformational Access, Brooke Lustig, I Baharand, R L. Jernigan

Brooke S. Lustig

For the binding of peptides to wild-type HIV-1 and BIV TAR RNA and to mutants with bulges of various sizes, changes in the ΔΔG values of binding were determined from experimental Kd values. The corresponding entropies of these bulges are estimated by enumerating all possible RNA bulge conformations on a lattice and then applying the Boltzmann relationship. Independent calculations of entropies from fluctuations are also carried out using the Gaussian network model (GNM) recently introduced for analyzing folded structures. Strong correlations are seen between the changes in free energy determined for binding and the two different unbound entropy calculations. The …


Rna Bulge Entropies Correlate With Peptide Binding Strengths For Hiv-1 And Biv Tar Rna Because Of Improved Conformational Access, Brooke Lustig, I Baharand, R L. Jernigan Jan 1998

Rna Bulge Entropies Correlate With Peptide Binding Strengths For Hiv-1 And Biv Tar Rna Because Of Improved Conformational Access, Brooke Lustig, I Baharand, R L. Jernigan

Faculty Publications, Chemistry

For the binding of peptides to wild-type HIV-1 and BIV TAR RNA and to mutants with bulges of various sizes, changes in the ΔΔG values of binding were determined from experimental Kd values. The corresponding entropies of these bulges are estimated by enumerating all possible RNA bulge conformations on a lattice and then applying the Boltzmann relationship. Independent calculations of entropies from fluctuations are also carried out using the Gaussian network model (GNM) recently introduced for analyzing folded structures. Strong correlations are seen between the changes in free energy determined for binding and the two different unbound entropy calculations. The …