Re: [ccp4bb] Transfer crystal from one well (higher precipitant) to another well (lower precipintant)

2009-06-10 Thread Pamela Focia
Hello HengChiat, Could be that the brief exposure to air resulted in more nucleation sites. You could still measure data on your crystal of interest despite the presence of the tiny crystals, as they are not likely to diffract well enough to interfere with the primary diffraction pattern.

Re: [ccp4bb] unknown density for a small molecule

2009-02-10 Thread Pamela Focia
Hi Mengxiao, The density sure reminds me of a nucleotide. Note the pi-pi stacking of the planar part between Tyr and Phe, and in the third stereo picture you attached, projections at what could be the 2 and 6 positions remind me of Guanine... plus there are Arg, Lys, etc. pointing toward

Re: [ccp4bb] Raxis II - free to good home!

2009-01-20 Thread Pamela Focia
We have found a home for our system. Thanks to all who replied. At 2:06 AM + 1/20/09, Pamela Focia wrote: We have an Raxis II system we took down a few months ago, plus an almost full, duplicate set of its major parts that we salvaged from a neighboring University last year. If you can

[ccp4bb] Raxis II - free to good home!

2009-01-19 Thread Pamela Focia
We have an Raxis II system we took down a few months ago, plus an almost full, duplicate set of its major parts that we salvaged from a neighboring University last year. If you can use any or all of it, I'd rather arrange to give it away to you than the metal scavengers. We only have a few