crystallography resolution (in Angstroems)

Some rules of thumb for 'outsiders'

Resolution        Meaning:
 >4.0           Coordinates meaningless
3.0 - 4.0        Fold possibly correct, but errors are
                very likely. Many sidechains placed
                with wrong rotamer.
2.5 - 3.0        Fold likely correct except that some surface
                loops might be mismodelled. Several long, thin
                sidechains (lys, glu, gln, etc) and small
                sidechains (ser, val, thr, etc) likely to
                have wrong rotamers.
2.0 - 2.5        As 2.5 - 3.0, but number of sidechains in
                wrong rotamer is considerably less. Many
                small errors can normally be detected.
                Fold normally correct and number of errors
                in surface loops is small.
1.5 - 2.0        Few residues have wrong rotamer. Many
                small errors can normally be detected.
                Fold always correct, also in surface loops.
0.5 - 1.5        One must be a determined idiot to screw
                things up at this resolution, but don't
                be fooled, even at this resolution can
                we find threonines with the wrong chrirality
                on the C-beta. But in general, structures
                have only some small errors at this
                resolution.


i can see that my 0.9A structure contrains me to be as awaken as possible to avoid to get the "determined idiot"
nickname ....