2 replies to this topic

[jamestoon]

How to check cloning orientation/direction?
People have been telling me to do either sequencing or restriction analysis.

The sequencing machine in my lab is very fully occupied recently, so I can't use it.

Can anyone tell me how to use restriction analysis to check for the direction of cloning?
tell me the protocol and the principle behind it because i don't really understand how this works.

is there any other ways to check it?

thanks!!!

[bob1]

It works by having sites that will give you different size digestion products depending on the orientation of the insert.

[phage434]

You can PCR using one primer on your insert and a second primer on the vector.  If you get amplification, you know the orientation.  You can check the length of the fragment, as well.