FIGURE 1.

Alignment of representative YhbY orthologs and plant CRM domains. The complete sequences of seven prokaryotic YhbY orthologs are aligned with four CRM domains excerpted from larger plant proteins. The domain boundary was chosen according to the structural core of E. coli, Haemophilus influenzae, and Staphylococcus aureus YhbY (Ostheimer et al. 2002; Willis et al. 2002; Liu and Wyss 2004). Identical residues are shaded in black, and similar residues in gray (similarity threshold of 0.4 for shading). CFM6 and CRS1 are maize proteins with one and three CRM domains, respectively. At1g23400 and At2g20020 are Arabidopsis proteins with two CRM domains each; the position of the CRM domain in the multi-CRM proteins is stated in the domain name. The conserved vGkxGv motif, which is similar to a motif found in KH RNA binding domains, is indicated.