Im doing cloning using GA but i failed two times and i found the maybe it can be due to secondary structure in my DNA. I wanna know how these secondary structures can disturb our cloning procedures? Tnx in advance for our response.
Hello. Hopefully, everyone is doing well. I usually use the Pichia protein expression system to express my recombinant protein. Every time working with this system was so easy for me and had no...
22 August 2023 7,414 4 View
Hello. Hope everyone is doing well. i purified my protein with the Q column (ion exchange column). The first time everything was ok but when I tried for the second-third time i got lots of DNA...
23 June 2023 2,318 4 View
My question is about the function of Histidine in the medium. I know there is a mutation in our pichia cell line and we need to transform our plasmid into the host cells and make it able to...
17 December 2021 3,195 1 View
i have plan to add a secretion signal to my plasmid. the point is here that i do not have any source to PCR that sequence and at last do GA. i need to synthesize by myself. i want to know is it...
03 September 2021 6,352 3 View
Actually i want to know how to make freezing medium with 10%DMSO& 90% FBS?What should be the condition to keep it and how long time is the shelf-life?Much tnx for your suggestions.
20 May 2019 7,483 3 View
I'm cloning a fragment of 3200 nts into plasmid. The cloning was successful, however, 02 amino acids were mutated. Now I want to fix these 02 aa by site-directed mutagenesis technique using...
08 August 2024 4,645 2 View
Hello experts, Does anyone know any free software about retention index prediction ?
08 August 2024 7,403 2 View
Dear QE-users, In the method where full MS positive mode and PRM mode are used, we always get an incorrect auxiliary gas reading (41 instead of 25). This only happens in this method; other...
06 August 2024 4,953 0 View
Hello, Can anyone provide me with the absorption coefficient of methane gas at 7.7 um? Any reference?
06 August 2024 980 5 View
There are anaerobic gas pak jars and environment providers in the laboratory that provide anaerobic environmental conditions for the growth of anaerobic bacteria. However, there is no anaerobic...
05 August 2024 4,945 3 View
Hi, everyone. I want to transfer two genes in to the pseudomonas bacteria that isolated from the soil. The bacteria that I want to use for cloning haven't been identified and not be sequenced,...
02 August 2024 3,987 1 View
i am facing the difficulty to find the right and latest topic for my thesis. i searched and read hundreds of articles but i couldn't find the right one. what can i do I'm really confused.
02 August 2024 1,323 8 View
or we can collaborate
01 August 2024 6,705 2 View
I am working on algal extract to which gas chromatography (Not GC-MS) spectrum I want to discover. My question is can we identify specific compounds using retention time if I compared the RT with...
29 July 2024 8,034 4 View
List down the various factors responsible and how does this effect the overall biogas production when it is related to Hydraulic retention time of the digester based on the feedstock?
27 July 2024 4,800 4 View