Figure 1

FCA homolog sequence alignment around the WW domain. The WW domain is shown boxed, with probable secondary structure marked (arrows for beta strands). The hypothesized beta-helix between the second RNA recognition motif (RRM) and the WW domain, and extending past the WW, is marked with a thick green line under the alignment. The polyglutamine region explored here is shown boxed, and with asterisks above amino acid residues. Sequences shown in the alignment: T. aestivum (Triticum), AAP84419 and AAP84418; L. perenne (Lolium), AAT72460; O. sativa (Oryza), AAW62371; H. vulgare (Hordeum), AAF97846; S. officinarum (Saccharum), CA085029; A. thaliana (Arabidopsis), AAW38964; B. napus (Brassica), AAL61622; P. sativum (Pisum), AAX20016; M. truncatula (Medicago), ABE82791; Z. elegans (Zinnia), AU291241; and S. rugosa (Stenogyne), EU005232. See Additional file 1 for the complete protein alignment and further explanation of structural features.