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linkv8: ½ð±Ò+5, ¡ï¡ï¡ïºÜÓаïÖú 2014-05-26 19:34:45
1. BL21 is different from BL21 DE3, which has lac control to prevent leakage before IPTG induction.
2. Try use pET17 or earlier version and pMal-c5x.
3. Cell: C41 or rosetta Gammii 2
4. For expression: proetein-pET17 in C41. using very riched media,
prepare 10ul overnight culture and add to 500ml media.
start your growth on Friday at room temperature or even low temp.
harvest you pellets on Monday.
For growth under 4C, 1 week.
DON'T ADD ANY IPTG and NO inductioin.

The whole idea is to use the lac leakage to expression the protein with proper fold.

Good luck
13Â¥2014-05-26 00:31:41
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huangrui1988

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