[ccp4bb] protein degradation

2013-06-16 Thread supratim dey
Hi i have setup a crystallization of a complex formed by two different proteins of molecular weights 53kD and 13kD. During purification of this complex there was slight degradation band of 53KD protein as observed from SDS PAGE but it did not effect complex formation. Crystals appeared after 8 mont

[ccp4bb] Hi clashscore

2013-01-23 Thread supratim dey
Hi I am refining my 2 angstrom strucutre using phenix windows based software. After many refinements my clashscore is not at all reducing and showing a value of 12. Can anybody suggest how to reduce the clashscore. Is there any technique to do it. Or i have to deal with each individual clashes men

[ccp4bb] mosaicity and SAD

2012-08-30 Thread supratim dey
Hi friends what is the maximum mosaicity value to work with. When i am doing Heavy metal replacement my mosaicity value is around 1 - 1.2 after processing through HKL. I don't know is it acceptable data. I have used mercuric chloride for my protein and it has shown good results .However in case of