Re: [ccp4bb] control of nucleation

2010-05-11 Thread Patrick Shaw Stewart
@JISCMAIL.AC.UK Subject: [ccp4bb] control of nucleation hello,everybody . due to excess nucleation,I often get many tiny crystals instead of few,large crystals.i wana optimize the condition, does anyone have adivce about this? Best regards.

Re: [ccp4bb] control of nucleation

2010-05-06 Thread zq deng
ng oil (such as parafin oil ... etc ) at reservoir > on top of the reservoir solution. You have to try several trials to find > optimum ratio. > > With regards > > Syed > > --- On *Thu, 5/6/10, zq deng * wrote: > > > From: zq deng > > Subject: [ccp4bb] contr

Re: [ccp4bb] control of nucleation

2010-05-06 Thread syed ibrahim
Hi I have succeeded by using oil (such as parafin oil ... etc ) at reservoir on top of the reservoir solution. You have to try several trials to find optimum ratio. With regards Syed --- On Thu, 5/6/10, zq deng wrote: From: zq deng Subject: [ccp4bb] control of nucleation To: CCP4BB

[ccp4bb] Fwd: [ccp4bb] control of nucleation

2010-05-06 Thread Charles W. Carter, Jr
I mistakenly sent this off to Enrico, rather than to the CCP4BB. Apologies to Enrico. Begin forwarded message: > From: "Charles W. Carter, Jr" > Date: May 6, 2010 6:50:23 AM EDT > To: est...@cea.fr > Subject: Re: [ccp4bb] control of nucleation > > In fact, ther

Re: [ccp4bb] control of nucleation

2010-05-06 Thread Mark Brooks
Dear Zq Deng, I've had success with the dilution method as described by Dunlop and Hazes: http://scripts.iucr.org/cgi-bin/paper?en5016 For me it worked for a couple of projects, and gives you a bit more to permutate than just varying the protein:mother liquor ratios, as Thomas

Re: [ccp4bb] control of nucleation

2010-05-06 Thread Enrico Stura
microscope and > the telescope. ~Theodore Roszak>>>> > From: zq deng > Reply-To: zq deng > Date: Thu, 6 May 2010 09:03:46 +0100> To: > Subject: [ccp4bb] control of nucleation>> hello,everybody . due to excess nucleation,I often

Re: [ccp4bb] control of nucleation

2010-05-06 Thread Thomas Edwards
Roszak From: zq deng Reply-To: zq deng Date: Thu, 6 May 2010 09:03:46 +0100 To: Subject: [ccp4bb] control of nucleation hello,everybody . due to excess nucleation,I often get many tiny crystals instead of few,large crystals.i wana optimize the condition, does

Re: [ccp4bb] control of nucleation

2010-05-06 Thread Tim Gruene
Dear zq deng, The standard method, I dare say, in such a case is micro seeding: reduce the precipitant to a concentration so that you just do not get crystals any more, wait until the drop equilibrates (about one day in the case your precipitant is a salt, up to 5-7 days for high MW PEGs), then

[ccp4bb] control of nucleation

2010-05-06 Thread zq deng
hello,everybody . due to excess nucleation,I often get many tiny crystals instead of few,large crystals.i wana optimize the condition, does anyone have adivce about this? Best regards.