Protein domain database?

[Ed Siefker]

I am trying to answer what should be a simple question.
That is, which residues of FGFR3 are intracellular?

I'm shocked to find that this information isn't in any
of the usual databases.  NCBI's gene page for FGFR3 doesn't
have it.  If I click through to the protein sequence, it's
not marked as a feature.  The RCSB protein data bank doesn't
seem to have this information either.

Now obviously I can search the literature and find a reference
that has this information. I'll be doing that tomorrow. But
isn't this the kind of thing we should be able to find out with
a few clicks in a database? Is there a database that has this
kind of information, and I'm just not finding it?  If not, why not?
-Ed