Certain features of will be down for maintenance the evening of Friday August 18th starting at 8:00 pm CDT until Saturday August 19th at 12:01 pm CDT.   Please note that you still have telephone and email access to our local offices. We apologize for any inconvenience.

Sigma Expression Vectors

Research expression of recombinant proteins requires a suitable vector for the species of your choice. Sigma offers a wide variety of expression vectors. For an even wider selection of cloning and expression plasmid vectors, see our SnapFast collection.