In my experience, 3C can partially cut TEV sites as well. If using 
sequentially, it is best to plan to use the TEV first.

> On Dec 7, 2022, at 2:42 PM, Lau Kelvin 
> <[email protected]> wrote:
> 
> I agree. I think it depends on the lab and vectors and personal preference. 
> 
> But David, have you used them sequentially? I have once tried to make a 
> His-GST-ENLYFQ-3C construct, and I found that it was self cleaving during 
> expression. However I have never tried to replicate the results in vitro.
> 
> 
> 
> -- 
> Kelvin Lau
> Protein production and structure core facility - PTPSP
> EPFL SV PTECH PTPSP 
> AI 2146 (Bâtiment AI) 
> Station 19 
> CH-1015 Lausanne
> Switzerland
> Email: [email protected] <mailto:[email protected]>
> Phone: +41 21 69 34494
> 
>> On 7 Dec 2022, at 21:38, David Briggs <[email protected] 
>> <mailto:[email protected]>> wrote:
>> 
>> Hi Gloria,
>> 
>> Both can be made very easily in E.coli.
>> Both are active at 4°C, but especially 3C, I think. 
>> 
>> I have plasmids for both somewhere in the freezer (you might find someone 
>> closer to you who can send HRV3C, but if you cannot, let me know off list).
>> 
>> I don't see any particular benefit of one over the other, but having both in 
>> your freezer means you can cleave off tags sequentially as needed by your 
>> purification strategies.
>> 
>> HTH,
>> 
>> Dave
>> 
>> Dr David C. Briggs CSci MRSB
>> Principal Laboratory Research Scientist
>> Signalling and Structural Biology Lab
>> The Francis Crick Institute
>> London, UK
>> ==
>> about.me/david_briggs <http://about.me/david_briggs>
>> 
>> From: CCP4 bulletin board <[email protected] 
>> <mailto:[email protected]>> on behalf of Gloria Borgstahl 
>> <[email protected] <mailto:[email protected]>>
>> Sent: Wednesday, 7 December 2022, 20:26
>> To: [email protected] <mailto:[email protected]> 
>> <[email protected] <mailto:[email protected]>>
>> Subject: [ccp4bb] TEV vs HRV3C
>> 
>>  
>> External Sender: Use caution.
>>  
>> Hello my fellow structural biologists,  I am contemplating why some choose 
>> the HRV3C protease site over TEV for their fusion proteins.  Does anyone 
>> know?  Can HRV3C be made easily in homelab?  Does anyone have a plasmid?  
>> Thank you, G
>> 
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