[ccp4bb] Research Fellow Positions in Structural Virology and Antiviral Development

2022-05-26 Thread Liew Chong Wai (Dr)
Research Fellow Positions in Structural Virology and Antiviral Development Laboratory of Associate Prof. Luo Dahai Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore. ** The position is immediately available. The Luo lab in the Lee Kong Chian School of Medicine at N

Re: [ccp4bb] Cryo-protectant

2009-04-24 Thread Liew Chong Wai
Hi all Thanks for your precious suggestions and ideas. The crystallization buffer condition is 0.1M BIS-TRIS pH 5.5, 0.2M MgCl.6H2O, 35% PEG3350 Now, my crystal seem ok in 20% ethylene glycol, but only after a couple minutes of dehydration at room temperature. For sure, i will try other cryopr

[ccp4bb] Cryo-protectant

2009-04-23 Thread Liew Chong Wai
Hi all, Good day I used MPD as a cryoprotectant (20%, 30%) for my crystal. However, there is no diffraction signal at all. Without the MPD cryo, i still manage to get 5angstrom, but it has very strong ice-ring signal. I used glycerol (15%, 20%, 25% and 30%) before, but it cracked the crystal.

[ccp4bb] Building structure in COOT

2009-03-31 Thread Liew Chong Wai
Hi, Good day I am currently building my structure by using COOT. My protein is a tetramer protein and I have fit my protein sequence into one of the monomer of the homologous model. May I know how can I replace other monomer with the amended monomer?? Thanks Chong-wai

[ccp4bb] Protein crystallization

2009-02-16 Thread Liew Chong Wai
Hi all I am dealing with a protein which size is about 200kDa. Due to the impurity and degradation problem, the protein has gone thru 3 purification steps (affinity column > ion exchange column > gel filtration column). The buffer condition for the last step of purification was 50mM MOPS pH7.0