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tutorials:structural_functional_analysis [2015/09/15 15:40] hafsa [Investigating Structural Variation] |
tutorials:structural_functional_analysis [2015/09/21 15:05] (current) hafsa [The CATHEDRAL Server] |
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| ==== The CATHEDRAL Server ==== | ==== The CATHEDRAL Server ==== | ||
| - | First of all, you need to retrieve all the domains present in FtsA. You can use the CATHEDRAL server to do this. The CATHEDRAL server employs a structural comparison algorithm to compare the query structure against known domains in the CATH database, which means you can also use it to try and identify a unknown protein by comparing it with all known structures in CATH. You submit the protein for analysis at [[http://beta.cathdb.info/cgi-bin/CathedralServer.pl|CATHEDRAL search page]]. You can download the PDB file for 1e4f from the [[http://www.rcsb.org/pdb/download/download.do|PDB server]] but, in this case, as 1e4f is known to already exist in the CATH database you can enter the code 1e4f directly into the query box. Then wait for the results to arrive and answer the questions below. | + | First of all, you need to retrieve all the domains present in FtsA. You can use the CATHEDRAL server to do this. The CATHEDRAL server employs a structural comparison algorithm to compare the query structure against known domains in the CATH database, which means you can also use it to try and identify a unknown protein by comparing it with all known structures in CATH. You submit the protein for analysis at [[http://v3-4.cathdb.info/cgi-bin/search.pl?search_text=|CATHEDRAL search page]]. You can download the PDB file for 1e4f from the [[http://www.rcsb.org/pdb/download/download.do|PDB server]] but, in this case, as 1e4f is known to already exist in the CATH database you can enter the code 1e4f directly into the query box. Then wait for the results to arrive and answer the questions below. |
| <box Info|'''CATHEDRAL Results (shortcut)'''> | <box Info|'''CATHEDRAL Results (shortcut)'''> | ||
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| </box> | </box> | ||
| - | To find the domain in CATH, enter the domain code (i.e. 1e4f followed by the chain ID and domain ID) into the search box [[http://update.cathdb.info/]] and look at the result. If you look at the homologous superfamily level (the H-level) you will see that the domain has the code 3.30.420.40. Click on this level to view the structures of other known domains from this homologous superfamily. | + | To find the domain in CATH, enter the domain code (i.e. 1e4f followed by the chain ID and domain ID) into the search box [[http://update.cathdb.info/|Click Here]] and look at the result. If you look at the homologous superfamily level (the H-level) you will see that the domain has the code 3.30.420.40. Click on this level to view the structures of other known domains from this homologous superfamily. |
| <box Question|Question> | <box Question|Question> | ||
