Need help on gratuitous inducer(s) other than IPTG!

[Ing-Nang Wng]

Hi everyone:

I m looking for informtion on gratuitous inducer(s) other than IPTG.  I
know that trp operon can be induced with IAA.  I am wondering if there is
any promotor (other than lac) that can be induced with gratuitous inducers
( inducer that can't be metabolized by the cell).  	

Thanks a lot!

Ing-Nang Wang
Dept. of Ecology and Evolution
SUNY- Stony Brook
ingnang at sbbiovm.sunysb.edu