epitope tagging of pcr products - (Oct/25/2009 )
hi
I am going express some intracellular proteins in mammalian cells and I want to to add an small epitope tag (myc, his. flag,...) to my reverese primer for detedtion of the expressed protein by ELISA or western blotting . I have some questions for this:
1. does adding small C terminal tags would interfere with activity of the protein (I search some commercial vectors in many of them tags are in N terminal).
2. is there any preferance in chosing a tag for c terminal use? I mean if some tags act better when add to c terminal.
3. is it necessary to put some spacer sequences between my protein and tag or I can add it directly to my protein, if yes what kind of spacer I can use.
many thanks
-sara.r-
sara.r on Oct 25 2009, 06:57 PM said:
hi
I am going express some intracellular proteins in mammalian cells and I want to to add an small epitope tag (myc, his. flag,...) to my reverese primer for detedtion of the expressed protein by ELISA or western blotting . I have some questions for this:
1. does adding small C terminal tags would interfere with activity of the protein (I search some commercial vectors in many of them tags are in N terminal).
I am going express some intracellular proteins in mammalian cells and I want to to add an small epitope tag (myc, his. flag,...) to my reverese primer for detedtion of the expressed protein by ELISA or western blotting . I have some questions for this:
1. does adding small C terminal tags would interfere with activity of the protein (I search some commercial vectors in many of them tags are in N terminal).
I don't think so, but you never can tell with proteins!
2. is there any preferance in chosing a tag for c terminal use? I mean if some tags act better when add to c terminal.
3. is it necessary to put some spacer sequences between my protein and tag or I can add it directly to my protein, if yes what kind of spacer I can use.
All the best with it.
-swanny-