Drosophila regulatory factor X is an embryonic type I sensory neuron marker also expressed in spermatids and in the brain of Drosophila

We report the expression pattern of a Drosophila transcription factor. Dros ophila regulatory factor X (dRFX), which belongs to the RFX winged-helix tr anscription factor family, dRFX is distributed in type I sensory neuron lin eage of the peripheral nervous system throughout Drosophila development and thus represents the first described type I lineage characteristic marker i n Drosophila. In addition, dRFX is also detected in the brain throughout de velopment and in spermatids in adult flies. (C) 2001 Elsevier Science Irela nd Ltd. All rights reserved.