Ethan A Merritt wrote:
> On Tuesday 04 July 2006 11:46 am, you wrote:
>> I'm looking for a tool that can essentially factor out anisotropic B
>> factors to larger-scale motion like TLS. But I'd like to also end up
>> with the residual anisotropic B, so I could examine what local motion
>> remains after removing the effects of larger-scale movement.
> 
> I'm afraid I don't understand what you are trying to do.
> Could you explain, giving equations or examples?
> Even better, could you explain what you are trying to accomplish?

I'm starting with an anisotropically refined protein. The problem is
that for each atom, the anisotropic B is a combination of many different
scales of motion, from global or domain-level to very local. I would
like to be able to separate these levels by first "factoring out"
motions common to _all_ atoms from the single-atom anisotropic B's into
larger TLS groups, then motions common to large domains, and so forth.

This would define different layers or shells of TLS domains -- a global
domain for global movements, then within that, various sub-domains for
smaller-scale movements, and so forth. The "leftover" or residual
anisotropic B would be highly local and would have no global or
large-scale motion effects still contributing to it.

>> Does anyone know of some way to do this? I looked at the TLSMD server,
>> but it didn't seem to do exactly what I want.
> 
> The mmLib package and the TLSMD code can probably do what you
> want, even if it isn't one of the default output modes of the
> server.  But I can't offer any more help until I understand better
> what you are aiming for.

I hope I've clarified what I want. I've just started using pymmlib
recently for some other work and it's saved me many hours, so I would be
happy to use it again.

Thanks,
Donnie

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