[BiO BB] PDB format

[Kalidas Yeturu]

Hi Othman
 I have been using pdb coordinates of any atom in pdb-file as with respect
to origin (0,0,0) ie., origin is not explicitly looked for in the pdb-file.
Once this system is established, you can apply your own rotation/translation
matrices to each coordinate.

With Regards
Kalidas.Y

On 4/11/06, Fazilah Othman <fazot at cs.usm.my> wrote:
>
>  Hi all,
>
>
>
> How to find the* origin* and *3 orthogonal vectors* for coordinate system
> (or reference system) used in any PDB data? I have gone thru PDB format
> descriptions (esp. in crystallographic and coordinate transformation
> section), but still getting out of no where. I think the info is there, but
> I cannot understand or digest it correctly. I cannot find anybody familiar
> with PDB here in my institution. Please help.
>
>
>
> p/s:I want to try locating the same point in 2 different coordinate
> systems (name it csA and csB). csA is the coordinate system from the PDB
> file (that is what I am trying to find out) and csB is the coordinate system
> created by me (I have the origin and 3 orthogonal vectors).
>
>
>
> Thanks.
>
> *______________________________*
>
> *-Fazot-*
>
>
>
>
>
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--
Kalidas Y
http://ssl.serc.iisc.ernet.in/~kalidas
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