CIB1
Protein DomainAs a tool component, CIB1 is most directly supported as the cryptochrome-interacting bHLH partner used with CRY2 to create blue-light-controlled protein association systems. In these systems, CIB1 is typically fused to localization, transcriptional, or enzymatic modules so that blue light drives CRY2–CIB1 binding and light withdrawal reverses the interaction.