I was suggesting that tls motions may be representative of larger
motions that occur in solution, which we may get snapshots of by
comparing different structures.
Kendall
On Jan 20, 2010, at 7:03 PM, "Pavel Afonine"
There are many examples of helices flexing or breaking in comparing strucures of the same protein bound to different ligands, so don't worry about that.
If I understood your point correctly... I think there are two different things:
1) different helix shapes across multiple crystal structures (and multiple datasets associated with them), and 2) a helix in a particular crystal structure (with one single dataset associated with it) that flexes-bends-brakes back-and-forth enough to accept that it can be broken down into multiple (tls-refinable) rigid bodies.
In refinement we deal with "2)" and therefore I was skeptical about such possibility.
Pavel.
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