Definitions for "Leader sequence"
A sequence at the 5' (N-terminal) of the DNA and mRNA which leads the newly synthesized mRNA to the ribosome (it is not translated). It is also used to mean the signal sequence which is translated but is subject to post-translation cleavage when the final destination is reached or following secretion.
A sequence of nucleotides at the 5ยด end of an mRNA that is not translated into protein.
At the 5 end of an mRNA, the sequence that is not translated into protein.