CSDD1, FLJ12457, LIN 28, Lin-28A, LIN28, LIN28A, LN28A_HUMAN, Protein lin-28 homolog A, ZCCHC1, Zinc finger CCHC domain-containing protein 1.
Involved in the timing of developmental events and choice of stage specific cell fates. Acts as a suppressor of microRNA (miRNA) biogenesis by specifically binding the precursor let-7 (pre-let-7), a miRNA precursor. Acts by binding pre-let-7 and recruiting ZCCHC11/TUT4 uridylyltransferase, leading to the terminal uridylation of pre-let-7.