RNA binding protein. Can also bind in vitro to single-stranded DNA. Highly expressed in inflorescences and roots. Detected in leaves and seedlings, but not in stems. Expressed in vegetative shoot apex and root meristem, but not in root cap. Detected in flower buds, junction of pedicels, joints of immature siliques and pistil. Expressed in joints of immature siliques, decreases with maturation and not detected in the joints of mature siliques.