> AltLoc is most useful for comparing models, if only one model is loaded
> this isn't possible. All conformations in the PDB file should be
> accessible after file load.

OK

>> You are right ... what a disaster it would be with multiple models.
>>
> 1SKT
> 1xhj

terrible :-(

>> Jan can probably tell us the 'worst cases' in terms of number of runs in
>> a
>> file and the maximum number of alternates within a run.
>>
>>
> No, I'm sorry, I am badly connected at the moment for PDB analysis, but
> I guess BCDE*3 ~ 12 AltLoc per residuum is the worst case, but only for
> special surface positions.
> The misuse for displaying point mutations may produce up to 20 AltLoc
> conformations.

Thank you for the estimate.

If you can later find out what the 'worst cases' are then that would be
helpful for testing.

> I don't like the "correct" combinatorial AltLoc to model implementation
> and vote for an AltLoc run implementation simply joining *all* *%A into
> one and all *%B into an other model,

Good.

> this will give 12 models to be
> generated (worst case, the number of alpha chars, if the PDB file author
> sorrowfully only joins coexisting conformations by a single char).

Yes. Good to know that you would favor this approach.


Per Warren's suggestion, it would be good to know how other packages deal
with this problem.


Miguel




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