Structural characterization of assemblies from overall shape and subcomplex compositions.

Frank Alber; Michael F Kim; Andrej Sali

doi:10.1016/j.str.2005.01.013

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Structural characterization of assemblies from overall shape and subcomplex compositions.

Frank Alber·Michael F Kim·Andrej Sali

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Abstract

We suggest structure characterization of macromolecular assemblies by combining assembly shape determined by electron cyromicroscopy with information about subunit proximity determined by affinity purification. To achieve this aim, structure characterization is expressed as a problem in satisfaction of spatial restraints that (1) represents subunits as spheres, (2) encodes information about the subunit excluded volume, assembly shape, and pulldowns in a scoring function, and (3) finds subunit configurations that satisfy the input restraints by an optimization of the scoring function. Testing of the approach with model systems suggests its feasibility.

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Computational Biology Computer Simulation Cryoelectron Microscopy Models, Molecular Multiprotein Complexes Proteasome Endopeptidase Complex Protein Conformation Protein Subunits Journal Article Research Support, N.I.H., Extramural Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S.Research Support, U.S. Gov't, P.H.S.

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Frank Alber, Michael F Kim, Andrej Sali. 2005. Structural characterization of assemblies from overall shape and subcomplex compositions.. https://doi.org/10.1016/j.str.2005.01.013

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