Survey of shape/volume fitting in structural biology

PDBe (EBI) and STFC are developing a web service as part of the BioMedBridges project (WP9) that will enable the EMDB and PDB archives to be searched on the basis of 3D volumetric shape matching, rather than solely on the basis of metadata and/or coordinate models.

For example:
- users will be able to upload a 50S ribosome map and retrieve aligned maps of other ribosomes from the archives
- when new entries are deposited, the service will automatically fit and segment existing entries that share common components, e.g. a newly deposited ribosomal protein will be fitted into ribosomal maps in the PDB/EMDB. The resulting segmentations will be made publicly available.

In due course, the service may be extended to other volumetric data, such as from SAXS or soft X-ray tomography.

We are taking our first baby steps in this project and need your help to avoid reinventing the wheel – we want to use existing software wherever possible! We would like to know what tools you use and in which context you use fitting software, including fitting atomic coordinates in a volume, fitting EM single particle volumes in tomograms, comparing an EM volume with a SAXS envelope, and comparing a EM single particle volume with a sub-tomogram average.

Many Thanks,
Ingvar Lagerstedt & Ardan Patwardhan, PDBe (EBI) and Martyn Winn, STFC

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* 1. Do you currently do any shape fitting?

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* 2. If you answered "No" above, please describe what you would be looking for/need in terms of tools, data, web services or other resources.

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* 3. What type(s) of shapes do you use?

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* 4. What type(s) of volume data do you fit into?

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* 5. Which software are you using for shape matching (select all that you use)?

Please note: while this is a long list, we have no doubt forgotten several software packages - please enter any that are missing below in the comments field.

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* 6. Do you use a GUI or a command line script? Do you follow a documented or published protocol, or do you use an in-house protocol?

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* 7. What, if any, meta data does the software need (select all that apply)?

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* 8. Any options/feature that is particularly useful with the software that you use?

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* 9. What type of matching do you do (select all that apply)?

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* 10. If your volume data have symmetry elements, such as in viruses, chaperons, helices etc., how do you handle the symmetry (select all that apply)?

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* 11. How do you evaluate the results (select all that apply)?

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* 12. What is your role?

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