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==Quick Guide==
==Quick Guide==
Here is a quick guide for interpreting values of resolution.  
Here is a quick guide for interpreting values of resolution (taken from [[FirstGlance in Jmol]]).
*1.2 Å Excellent -- backbone and most sidechains very clear. Some [[Hydrogen in macromolecular models|hydrogens]] may be resolved, see [[Hydrogen in macromolecular models]].
*≤1.7 Å: Most atoms very clearly seen.
*2.5 Å Good -- backbone and many sidechains clear.
*~1.7 - 2.2 Å: Many atoms clearly seen.
*3.5 Å OK -- backbone and bulky sidechains mostly clear.
*~2.2 - 2.8 Å: Shapes of larger sidechains seen.
*5.0 Å Poor -- backbone mostly clear; sidechains not clear.
*~2.8 - 3.5 Å: Secondary structure & bulky groups seen. Atoms unclear.
*~3.5 - 4.0 Å: Most [[chains]] traceable. Atoms unclear. Atoms unclear.
*~4.0 - 6.0 Å: Some chains traceable. Atoms unclear.
*~6.0 - 8.0 Å: Shapes of [[domains]] at best. Atoms unclear.
*> 8.0 Å: Largest features seen roughly. Atoms unclear.


Bear in mind that the resolution value represents the "best" (most ordered) parts of a crystal, and that other parts may have poorer quality. The [[temperature value]] for each atom in a crystallographic model indicates the clarity of its electron density map.
Bear in mind that the resolution value represents the "best" (most ordered) parts of a crystal, and that other parts may have poorer quality. The [[temperature value]] for each atom in a crystallographic model indicates the clarity of its electron density map.
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