Practical Guide to Homology Modeling: Difference between revisions

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Here are two methods for finding out if your query amino acid sequence, or parts of it, have empirically-determined 3D structures in the PDB.
Here are two methods for finding out if your query amino acid sequence, or parts of it, have empirically-determined 3D structures in the PDB.
=== Simple search for empirical models (via PIR) ===
At UniProt.Org, find your protein and click on Structure.
*If there is a column labeled “Entry” with 4-character PDB IDs, these are empirical structures for your protein. Pay attention to the “Positions” column, which gives the sequence number range covered by each model.
*If there is no “Entry” column, then there are no sequence-identical empirical structures for your protein. Then try the Advanced search method below.
*Some proteins have no Structure section (e.g. K4QDG1_SACBA). Then try the Advanced search method below.
If empirical structures exist, see sections below for guidance on how to explore them. If they are satisfactory, then you don't need a homology model.


== References ==
== References ==
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