Practical Guide to Homology Modeling: Difference between revisions

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=== Is there an empirical model? ===
=== Is there an empirical model? ===


All published, empirically-determined, atomic-resolution, macromolecular 3D structures are available in the [[Protein Data Bank]] (PDB, rcsb.org).
All published, empirically-determined, atomic-resolution, macromolecular 3D structures are available in the [[World Wide Protein Data Bank]].


Each model in the PDB has a unique 4-character identification code ([[PDB ID]]) that begins with a numeral, and has letters or numerals for the last 3 characters . Examples are 1d66, 4mdh, 9ins.
Each model in the PDB has a unique 4-character identification code ([[PDB ID]]) that begins with a numeral, and has letters or numerals for the last 3 characters . Examples are 1d66, 4mdh, 9ins.