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. 1993 Feb 15;90(4):1536-40.
doi: 10.1073/pnas.90.4.1536.

A Drosophila photoreceptor cell-specific protein, calphotin, binds calcium and contains a leucine zipper

D G Ballinger  1 , N Xue, K D Harshman
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A Drosophila photoreceptor cell-specific protein, calphotin, binds calcium and contains a leucine zipper

D G Ballinger et al. Proc Natl Acad Sci U S A. .

Abstract

The calphotin protein, encoded by the calphotin (cap) gene, is expressed in the soma and axons of all Drosophila photoreceptor cells. It is expressed early in photo-receptor cell development, at the time when cell-type decisions are being made. Expression of calphotin is not altered by the glass mutation, which blocks photoreceptor cell development. The calphotin protein binds calcium and contains a long C-terminal leucine zipper. Potential implications of these properties are discussed.

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