I have noticed that there are seperate entries for futsch and  EG:49E4.1 
in FlyBase. In the paper that the EDGP are submitting we have written
...
Another very large gene is futsch ( EG:49E4.1 ), covering 18 Kb but
encoding a protein of 5327 amino acids predicted to encode a
micotubule-associated protein, on the basis of its similarity with human
MAP1B (SWISS- PROT:P46821 ) which is only half the size. Recently Hummel
and colleagues (2000) have shown that futsch encodes the well-known
Drosophila neural antigen 22C10.
Hummel, T., K. Krukkert, J. Roos, G. Davis, and C. Klambt. 2000.
Drosophila Futsch/22C10 is a MAP1B-like protein required for dendritic
and axonal development. Neuron 26: 357-370.
...
cheers
mel :-)