RNA-binding protein involved in the regulation of flowering time. Acts as repressor of the activity of SOC1, a transcriptional activator of flowering time. Binds to the 3'-UTR of SOC1 mRNA in the cytoplasm and participates in SOC1 mRNA decay, mediated by the distal region of the SOC1 3'-UTR. A number of isoforms are produced. According to EST sequences. Expressed in roots, stems, flowers and siliques.