List of point mutations?

[Scott Lauder]

I am looking for some genetic systems to test reversion, such as 
arg4-17, his3-1 etc.. However, I need to know the type (base change, 
frameshift, ochre, amber) and the exact location of the mutations in 
these genes.  Does anyone have a list or know of a database carrying 
this type information. Genbank, SGD and YPD don't seem to have this. 
-- 
--------------------------------------->
Bob Johnson.
University of Texas Medical Branch
Galveston, Texas