Re: [ccp4bb] off-topic: 2 peaks on Cation

2011-02-21 Thread Nadir T. Mrabet
te: I'll swap you for the deamination, as that pertains to lysines...it's been a long week :) Steve -Original Message- From: CCP4 bulletin board [mailto:CCP4BB@JISCMAIL.AC.UK] On Behalf Of Nadir T. Mrabet Sent: Friday, February 18, 2011 2:04 PM To: CCP4BB@JISCMAIL.AC.UK Subject: R

Re: [ccp4bb] off-topic: 2 peaks on Cation

2011-02-18 Thread VAN RAAIJ , MARK JOHAN
look like? >>> Cheers, >>> Steve >>> >>> ------------------------ >>> *From:* CCP4 bulletin board [mailto:CCP4BB@JISCMAIL.AC.UK] *On >>> Behalf Of *Ulli Hain >>> *Sent:* Friday, February 18, 20

Re: [ccp4bb] off-topic: 2 peaks on Cation

2011-02-18 Thread Ulli Hain
-- >> *From:* CCP4 bulletin board [mailto:CCP4BB@JISCMAIL.AC.UK] *On >> Behalf Of *Ulli Hain >> *Sent:* Friday, February 18, 2011 12:14 PM >> *To:* CCP4BB@JISCMAIL.AC.UK >> *Subject:* [ccp4bb] off-topic: 2 peaks on Cation &

Re: [ccp4bb] off-topic: 2 peaks on Cation

2011-02-18 Thread Soisson, Stephen M
e: [ccp4bb] off-topic: 2 peaks on Cation Typo! I actually meant deamidation. Nadir Pr. Nadir T. Mrabet Structural& Molecular Biochemistry Nutrigenex - INSERM U-954 Nancy University, School of Medicine 9, Avenue de la Foret de Haye, BP 184 54505 Vandoeuvre-les-Nancy Cedex France Phone: +33 (0

Re: [ccp4bb] off-topic: 2 peaks on Cation

2011-02-18 Thread Nadir T. Mrabet
Typo! I actually meant deamidation. Nadir Pr. Nadir T. Mrabet Structural& Molecular Biochemistry Nutrigenex - INSERM U-954 Nancy University, School of Medicine 9, Avenue de la Foret de Haye, BP 184 54505 Vandoeuvre-les-Nancy Cedex France Phone: +33 (0)3.83.68.32.73 Fax: +33 (0)3.83.68.32.79 E

Re: [ccp4bb] off-topic: 2 peaks on Cation

2011-02-18 Thread Nadir T. Mrabet
P4BB@JISCMAIL.AC.UK *Subject:* [ccp4bb] off-topic: 2 peaks on Cation Hi, I was wondering if anyone had possible explanations for a recombinantly expressed soluble protein that runs as 2 equal, slightly overlapping peaks on a cation exhanger but as one peak on a size exclusion column and same electrophor

Re: [ccp4bb] off-topic: 2 peaks on Cation

2011-02-18 Thread Soisson, Stephen M
@JISCMAIL.AC.UK Subject: [ccp4bb] off-topic: 2 peaks on Cation Hi, I was wondering if anyone had possible explanations for a recombinantly expressed soluble protein that runs as 2 equal, slightly overlapping peaks on a cation exhanger but as one peak on a size exclusion column and same electrophoretic

Re: [ccp4bb] off-topic: 2 peaks on Cation

2011-02-18 Thread Christian Roth
Hi, you did not mention anything about your protein, but if it shows a metal dependency, than different amounts of the metal ion might changen the overall charge and influence the interactions with the ion exchanger. There might be also a modification of an aminoacid f.e. decarboxylation of an a

[ccp4bb] off-topic: 2 peaks on Cation

2011-02-18 Thread Ulli Hain
Hi, I was wondering if anyone had possible explanations for a recombinantly expressed soluble protein that runs as 2 equal, slightly overlapping peaks on a cation exhanger but as one peak on a size exclusion column and same electrophoretic mobility on SDS-PAGE. -Ulli Adelaide Ulricke Hain Ph