Figure 8From: Structural insights into the function of the core-circadian factor TIMING OF CAB2 EXPRESSION 1 (TOC1) Schematic representation of a TOC1 structural model. I PRR domain – this resembles bona fide response regulators. II Linker domain – a putative bridge between modules I and III. III Calcium-binding domain – a potential sensor for a metal. IIIb Protein-binding domain – a potential interaction motif for HAP DNA-binding factors.Back to article page