Re: [ccp4bb] Cysteine oxidation product

2020-11-01 Thread zaigham khan
dified cysteine > intramolecularily. > > Dhiraj > -- > *From:* Jon Cooper > *Sent:* Sunday, November 1, 2020 7:41 AM > *To:* Srivastava, Dhiraj ; > CCP4BB@JISCMAIL.AC.UK > *Subject:* Re: [ccp4bb] Cysteine oxidation product > > Hello, > >

Re: [ccp4bb] Cysteine oxidation product

2020-11-01 Thread Srivastava, Dhiraj
Subject: Re: [ccp4bb] Cysteine oxidation product Hello, does the protein you added cysteine to (I assume you mean by mutagenesis) have another cysteine which could make an intra molecular disulphide with it? That would probably not show on non-reducing SDS? Best wishes, Jon Cooper

Re: [ccp4bb] Cysteine oxidation product

2020-11-01 Thread Jon Cooper
Hello, does the protein you added cysteine to (I assume you mean by mutagenesis) have another cysteine which could make an intra molecular disulphide with it? That would probably not show on non-reducing SDS? Best wishes, Jon Cooper Original Message On 31 Oct 2020, 15:58, Sri

Re: [ccp4bb] Cysteine oxidation product

2020-10-31 Thread Srivastava, Dhiraj
iraj Sent: Saturday, October 31, 2020 4:58:37 PM To: CCP4BB@JISCMAIL.AC.UK Subject: [ccp4bb] Cysteine oxidation product Hi All I added an extra cysteine residue to one of my protein interactions partners and somehow it increased the affinity in the absence of reducing agent however in the p

Re: [ccp4bb] Cysteine oxidation product

2020-10-31 Thread Barone, Matthias
94793-284 From: CCP4 bulletin board on behalf of Srivastava, Dhiraj Sent: Saturday, October 31, 2020 4:58:37 PM To: CCP4BB@JISCMAIL.AC.UK Subject: [ccp4bb] Cysteine oxidation product Hi All I added an extra cysteine residue to one of my protein interactions pa

[ccp4bb] Cysteine oxidation product

2020-10-31 Thread Srivastava, Dhiraj
Hi All I added an extra cysteine residue to one of my protein interactions partners and somehow it increased the affinity in the absence of reducing agent however in the presence of reducing agent, the affinity is same. there is no disulfide bond formation between the two interaction par