In article <38hcgl$osa at lynx.unm.edu> mcrawfor at triton.unm.edu (Matt Crawford) writes:
>>Does anyone know of a shuttle vector suitable for cloning promoter
>fragments in front of LACZ that has a TRP1 (or actually, any marker
>besides URA3) marker?
There are vectors with LEU2. The reference is Gene 45, 299 (1986).
They are available from the stock center.