[ccp4bb] Fwd: [ccp4bb] AMP-PNP Hydrolysis

2011-02-14 Thread Charles W. Carter, Jr
Once again, I've sent off a message only to one person that was intended for the BB. Begin forwarded message: > From: "Charles W. Carter, Jr" > Date: February 14, 2011 6:23:16 PM EST > To: Martin Picard > Subject: Re: [ccp4bb] AMP-PNP Hydrolysis > > I tak

Re: [ccp4bb] AMP-PNP Hydrolysis

2011-02-14 Thread Matthew Chu
Is it possible that the phosphates are just disordered rather than being cleaved? It's always the case for inactive kinase-ATP or AMPPNP complexes that the phosphates are not stabilized by Mg2+ or the residues in the binding pocket and hence they become disordered and are not seen in the electron d

Re: [ccp4bb] AMP-PNP Hydrolysis

2011-02-14 Thread Martin Picard
gt; > > > > > > From: CCP4 bulletin board [mailto:CCP4BB@JISCMAIL.AC.UK] On Behalf Of Derek > Logan > Sent: Monday, February 14, 2011 4:16 PM > To: CCP4BB@JISCMAIL.AC.UK > Subject: Re: [ccp4bb] AMP-PNP Hydrolysis > > > > Hi Steve, > >

Re: [ccp4bb] AMP-PNP Hydrolysis

2011-02-14 Thread Prince, D Bryan
From: CCP4 bulletin board [mailto:CCP4BB@JISCMAIL.AC.UK] On Behalf Of Derek Logan Sent: Monday, February 14, 2011 4:16 PM To: CCP4BB@JISCMAIL.AC.UK Subject: Re: [ccp4bb] AMP-PNP Hydrolysis Hi Steve, Funnily enough I just read the following paper today, which describes exactly this phenomenon:

Re: [ccp4bb] AMP-PNP Hydrolysis

2011-02-14 Thread Derek Logan
Hi Steve, Funnily enough I just read the following paper today, which describes exactly this phenomenon: http://www.ncbi.nlm.nih.gov/pubmed/21093442 Is AMPPCP as sensitive to acid conditions? I would suspect not. Best wishes Derek ___

Re: [ccp4bb] AMP-PNP Hydrolysis

2011-02-14 Thread Young-Jin Cho
Hi Steve, With my experience, it is (very) common to see AMPPNP is hydrolyzed to AMPPN (supposedly) with my protein. Although the literature often reported AMPPNP as a stable ATP mimic, such a luck wasn't true with my case, maybe same as you. If you go to Sigma website where I purchased, it may

[ccp4bb] AMP-PNP Hydrolysis

2011-02-14 Thread Soisson, Stephen M
Hi there, Was recently looking at a structure of an enzyme with AMP-PNP added to the crystallization mix, and all I see is density for ADP. I was wondering if hydrolysis of AMP-PNP to ADP is relatively common - either as a result of extended time in crystallization or exposure of the resultant cr