Words similar to xaa

Example sentences for: xaa

How can you use “xaa” in a sentence? Here are some example sentences to help you improve your vocabulary:

Through the action of farnesyl transferases and type I geranylgeranyl transferases, isoprenoids are attached to the amino acid sequence Cys-Ala-Ala-Xaa (“CAAX”) at the C-terminus of the Rho family of GTPases [20].