NDLI: Prediction of the three-dimensional structure of Escherichia coli 30S ribosomal subunit: a molecular mechanics approach.

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Prediction of the three-dimensional structure of Escherichia coli 30S ribosomal subunit: a molecular mechanics approach.

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Prediction of the three-dimensional structure of Escherichia coli 30S ribosomal subunit: a molecular mechanics approach.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Tan, R. K. Malhotra, A. Harvey, S. C.
Description	Author Affiliation: Malhotra A ( Department of Biochemistry, University of Alabama, Birmingham 35294.);
Abstract	We introduce a computer-assisted procedure for folding large RNA chains into three-dimensional conformations consistent with their secondary structure and other known experimental constraints. The RNA chain is modeled using pseudoatoms at different levels of detail--from a single pseudoatom per helix to a single pseudoatom for each nucleotide. A stepwise procedure is used, starting with a simple representation of the macromolecule that is refined and then extrapolated into higher resolution for further refinement. The procedure is capable of folding different random-walk chains by using energy minimization, allowing generation of a range of conformations consistent with given experimental data. We use this procedure to generate several possible conformations of the 16S RNA in the 30S ribosomal subunit of Escherichia coli by using secondary structure and the neutron-scattering map of the 21 proteins in the small subunit. The RNA chain is modeled using a single pseudoatom per helix. RNA-RNA and RNA-protein crosslinks, reported in current literature, are included in our model. Footprinting data for different ribosomal proteins in the 16S RNA are also used. Several conformations of the 16S RNA are generated and compared to predict gross structural features of the 30S subunit as well as to identify regions of the 16S RNA that cannot be well-defined with current experimental data.
ISSN	00278424
e-ISSN	10916490
Journal	Proceedings of the National Academy of Sciences of the United States of America
Issue Number	5
Volume Number	87
Language	English
Publisher	National Academy of Sciences
Publisher Date	1990-04-01
Publisher Place	United States
Access Restriction	Open
Subject Keyword	Escherichia Coli Ultrastructure Models, Structural RNA, Ribosomal Ribosomes Nucleic Acid Conformation RNA, Ribosomal, 16S RNA, Transfer, Phe Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. Multidisciplinary
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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