A trans-acting factor that binds to a GT-motif in a phytochrome gene promoter.

Analyzes a rice phyA gene promoter of the regulatory photoreceptor, phytochrome, which indicate that a GT motif closely related to elements in the promoters of a number of other light-regulated genes is critical for expression. Partial complementary DNA clones for a rice nuclear protein; High-sequence-specific binding; Related domains; Effects of white light GT-messenger RNA levels.