Fig. 3. Drumstick is a member of the Odd-skipped family of zinc finger proteins. Cytological map showing the proximity of drm, sob, odd and bowl (A). Drm, Odd, Sob and Bowl are similar in their zinc finger domains, but otherwise share little sequence similarity; protein lengths are indicated to the right (B). Alignment of the zinc fingers from Drm, Odd, Sob, and Bowl (C). The zinc fingers from Mus musculus mOsr1 and mOsr2 (and its alternatively spliced form, mOsr2[alt]), are shown for comparison (mouse and human Osr proteins are identical within the zinc finger motifs). Identical and similar residues are shaded black and gray, respectively (BOXSHADE, v. 3.2). Dashes indicate gaps in the alignment, and dots indicate amino acid residues (not shown) outside the zinc finger domains. Conserved residues in the canonical C₂H₂ zinc finger are shown below. Asterisks above the Drm sequence denote single residues altered in drm mutants (see Table 1 and Fig. 2D), and the diamond denotes the second exon splice donor site where the drm³ roo element is inserted.

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