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Questions related from Shridhar Kinkar
I have been growing E. coli host in SM6 medium for fermentation. During the run, I did microscopy and found long filamentous rods, which are Gram negative. I have started searching literature for...
05 May 2019 4,430 9 View
I need to perform an experiment in which I have to put both glycerol and lactose. My doubt is which of these carbon sources will be consumed first by E. coli cells? I assume it is lactose, but...
04 April 2019 3,971 5 View
Presently I'm working on a host-vector combination, where the E. coli host is K-host and the vector is p15A ori-based vector with tetracycline as selection marker. The problem I'm facing is the...
07 July 2018 576 0 View
I want to use tetracycline as selection marker for my next experiments. I was advised to perform the experiments in dark. I want to know if this precaution is really required. I haven't found any...
02 February 2018 4,444 7 View
Hi, I have been titrating best IPTG dose for highest expression of my GOI. However, I found that after a certain concentration (2.5mM), post-induction OD600 of culture shows lesser growth and as a...
01 January 2018 3,640 5 View
I expressed TNFa in E. coli BL21 (DE3) host and got satisfactory expression. The protein is tagless. My question is how do I purify it? Which chromatography techniques can I use and what should be...
09 September 2014 7,591 18 View
I'm trying to express the protein in E. coli, but not sure which host to choose. BL21(DE3) doesn't express it very efficiently. Expression conditions are 37C/0.3mM IPTG/4h.
07 July 2014 764 7 View