CMV promoter. Transcript 5 ęend?

[Joaquin Castilla]

I am interested in precisely where the transcription starts from the CMV promoter. I.e. 
what does the 5ę end of the RNA look like?  I have to produce a viral RNA transcript in 
vivo with a sort of precise 5ęend.
Could you give me a reference or anybody knows anything about it? I know that this sort 
of stuff is well known for the T7 promoter (extra G, etc..) but I was unable to find 
anything for CMV.
Please help. Thanks,
Zoltan Penzes
zpenzes at samba.cnb.uam.es