Re: [ccp4bb] alternating strong/weak intensities in reciprocal planes - P622

2007-08-27 Thread Rizkallah, PJ (Pierre)
Hi Jorge, I imagine your 222 tetramer makes a sort of 'pancake' which fits into a cell of 229x229x36 when you apply the 6-fold symmetry. If that was the case in the crystal, then these would be the cell dimensions that you would get. But I suspect you have a situation where the cell repeat has a

Re: [ccp4bb] Spooky, moving crystals

2008-07-21 Thread Rizkallah, PJ (Pierre)
Hi Mark, Cryocooled loops stored in tubes inside dewars do flex a little when the loops are put on the goniometer. This is natural, as in the dewar, the whole pin was in liquid nitrogen, but on the goniometer, it is only the loop that is in the cryo stream. Having said that, the degree of