Encodes a microRNA that targets several genes containing AP2 domains including AP2. MicroRNAs are regulatory RNAs with a mature length of ~21-nucleotides that are processed from hairpin precursors by Dicer-like enzymes. MicroRNAs can negatively regulate gene expression by attenuating translation or by directing mRNA cleavage. Mature sequence: AGAAUCUUGAUGAUGCUGCAU. Pri-mRNA coordinates for MIR172b (converted to TAIR10 based on PMID19304749): Chr5: 1188916-1187500 (reverse), length: 1417 bp; exon coordinates: exon 1: 1188916 to 1188742, exon 2: 1188623 to 1188583, exon 3: 1188383 to 1188133, exon 4: 1187852 to 1187500; mature miRNA and miRNA* are located on exon 3.
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