... forming eight b-sheets [23]. The motifwas noted on the basis of homology with the C-terminalregion of meprins A and B and the TRAF-C domain, and, like the BTB domain, facilitates protein–proteininteraction ... base of differentiated siliques (e). (G) 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 ... stamen and stigmata. In proB-PM6:GUS lines, we saw GUS expression in the vascu-lar tissue of cotyledons and mature leaves, whereas, in the flowers, the anthers, connectives and filaments and the...