Flybase,
The gene Ser7 is a synonym of CG2045. In Coustau et al.'s original
paper describing how Ser7 is upregulated during the immune response,
they reported a portion of the amino acid sequence for Ser7.
Blasting this amino acid sequence against the genome gave one very
clear hit, for CG2045. Furthermore, De Gregorio et al. (PNAS
 98:12590-12595 ) just showed that CG2045 is upregulated during the
immune response.
Todd Schlenke
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Todd Schlenke
Section of Evolution and Ecology
Storer Hall
University of California
Davis, CA 95616