TWGFD

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Zinc-finger proteins are widely dispersed in eukaryotic organisms. Zinc-finger domains are rich in cysteine or histidine and have been classified into several types, including RING (Really Interesting New Genes), LIM (Lin11, Isl-1 and Mec-3), and plant homeodomain (PHD). The majority of PHD proteins are in the nucleus. A typical PHD protein usually contains one to several PHD-finger domains, and each of the proteins contains approximately 60 amino acids with the structure composition of Cys4-His-Cys3 zinc-binding motif. In plant, the PHD domains were found to be involved in the transcriptional regulation of developmental processes such as meiosis and postmeiotic events during pollen maturation, embryo meristem initiation and root development, germination, flowering time.