... withCUL3 and other BTB proteins [2,16], it remains unclearwhat kind of interactions are mediated by the MATH domain in plants. In this article, we show that the MATH domain of BPM proteins is used ... proteins use their BTB ⁄ POZ domain to interactwith the cullins CUL3A and CUL3B [3,4,16], we inves-tigated what kind of protein–protein interactions werefacilitated by their MATH domains by ... proRAP2.4:GUS lines showed GUS expression in 3-day-old seedlings in cotyledons and in the central cylinder of the root, but not in the lower parts of the hypocotyl (a). Rosette leaves werestained in the...