[ccp4bb] About deblock N-terminus

2007-11-16 Thread Yong, Wei
Dear all, I solved a protein crystal structure which is about 95KD and was purified from pig liver. Based on the crystal structure, I missed 36 residues at its N-terminus and 16 at its C-terminus. I tried to do N-terminus sequencing to identify if these 36 residues was cleaved or not. However,

[ccp4bb] An off-topic question about mitochondria protein expression

2007-11-19 Thread Yong, Wei
Dear all, Sorry for bothering you. I have an off-topic question about how to choose a suitable expression vector and strain to overexpress mitochondria protein in E Coli for the future crystallographic study. It is a human metabolic enzyme expressed in the liver. My colleagues tried to overexp

[ccp4bb] SUMMARY about deblock N-terminus

2007-11-19 Thread Yong, Wei
Dear friends, Thank you very much for your suggestions which are very helpful. I am writing to thank you from the bottom of my heart. Here is the summary of the topic. Best Wei # QUESTION: I solved a protein crystal structure which is about 95KD and was

[ccp4bb] Two off-topic questions

2008-05-12 Thread Yong, Wei
Dear all, I am sorry to bother you with two off-topic questions. Question one: I have solved a pig mitochondrial protein crystal structure whose molecular weight is about 95kd. However, I do not have the sequence information of this protein. It is weird that I could not blast its sequence in p

Re: [ccp4bb] Two off-topic questions

2008-05-12 Thread Yong, Wei
From: Frank von Delft [mailto:[EMAIL PROTECTED] Sent: Mon 5/12/2008 11:12 AM To: Yong, Wei Cc: CCP4BB@JISCMAIL.AC.UK Subject: Re: [ccp4bb] Two off-topic questions > only tried once). Does any body have ideas about how to extract mRNA from pig > live (or animal tissue in general)? >

[ccp4bb] HKL2000

2009-02-11 Thread Yong, Wei
Dear all, I have a problem about HKL2000. I can start HKL2000 and load my data. I can only open images ending with .img and process them. However, osc images could not be opened and processed. There is no error message from HKL2000 main window. I can not figure out what is wrong with it. Can an

[ccp4bb] How to express a >95KD FAD protein

2009-06-29 Thread Yong, Wei
Dear all, I know that there are a lot of experts having experience in expressing a big protein in E.coli or yeast. My project is about a 95kd covalently-FAD-binding protein (Human protein). I tried very hard but have a bad luck over the past 1.5 years. I list what I did briefly so far. I am loo