>Gemin8|NM_146238|3'UTR
   1 GTCCTGGGCACCGGGACCCTAGGGAATGCATCACAGTTCCTAGCCTCTCCCTCTTCATCTCTTCTGGACATTTTTCAGAG
  81 AAAGAGGCCTGTATACCAACATGGTGGATACAGTCTGTCAACAGGAGAGAGGTATACTGTTGCCAACACAAGGAATGTTC
 161 ACTGACAAAGTGATAATTTATGTATTGTACTGGCTCTTGGTTTTCTCTTTAACAGTCCAGTTCATTGAAATTATTGCCTA
 241 GCAATACTGCCTATTGTTTTGCATTTTTAATGTCCTTCTTTAAACCATCCAGAATGTCATAAAAGCCTTAAGCCACGTGT
 321 CATTTATTCCTACATTTTTATTAGATATTTTCTTTATTTATATTTTAAATGTTATCCCCTTTCCTTGTTTCCCCTCCTTT
 401 AAAAGCTCCCTATCCCCTGCTCCCCAGCCCACCCACTCCACATCCTGGCCCAGACATTCCTACATTTTTAGGCCAGTTTT
 481 CATACAGTGCATGCTAGCTACAAACTTAAAATCTTCCTGCTTCCACCTCCCAAATGCTCGTTTGCAGGTTTGCACTGCCC
 561 ACACTGAGCTTCTGTCCACGTATTTTCTGTGACTTTTTCTGTGGACCCCTCTGAAAACCATGTAAGTGAACAGTAAAAGA
 641 AGTGGCACTGTGCAAGGTGTGGTAGCGCACGCCTTTAATCCCAGCACTCCGGAGGCAGAGGCAGGAGGATTTCTGAGTTC
 721 GAGGCCAGCCTGGTCTACAAAGTAAGTTCCAGGACAGCCAGGGCTATACAGAGAAACCCTGTCTTGGGGGGAAAAAAAAG
 801 TGGCACTTGTTATTCTGCTAGGTGTCAGCCCGCATGCTCTATAAGACCTGAGAGTAAGTACTCTGGGCTTGGCAGGCCAT
 881 GTTGTCTCATAACTGCCTAACCCTGTCTTTATAGCATAAAAACAGCCATAGTTACTGAATAAACAAATGAATGTGACTGT
 961 GTTTCAATAAAATTTTATTTGTAAAAAAAAATAAAATAAAATAAAACAGGCT

ID	Duplex structure	Position	Score	MFE
1	miRNA 3' aacUAUCCU-CCAC-GAGUUAUUu 5' ||: || ||| :||||||| Target 5' tgaATGTGACTGTGTTTCAATAAa 3'	948 - 971	155.00	-9.00
2	miRNA 3' aaCUAUCC----UC---C--ACGAGUUAUUu 5' | |||| || | ||||| |||| Target 5' ctGCTAGGTGTCAGCCCGCATGCTCTATAAg 3'	815 - 845	124.00	-9.70
3	miRNA 3' aacuaUCCUCCACGAGUUAUUu 5' |||| ||:||| |:| Target 5' acacaAGGA-ATGTTCACTGAc 3'	146 - 166	112.00	-8.40

- Cell, 2014

MicroRNAs are well known to mediate translational repression and mRNA degradation in the cytoplasm. Various microRNAs have also been detected in membrane-compartmentalized organelles, but the functional significance has remained elusive. Here, we report that miR-1, a microRNA specifically induced during myogenesis, efficiently enters the mitochondria where it unexpectedly stimulates, rather than represses, the translation of specific mitochondrial genome-encoded transcripts. We show that this positive effect requires specific miR:mRNA base-pairing and Ago2, but not its functional partner GW182, which is excluded from the mitochondria. We provide evidence for the direct action of Ago2 in mitochondrial translation by crosslinking immunoprecipitation coupled with deep sequencing (CLIP-seq), functional rescue with mitochondria-targeted Ago2, and selective inhibition of the microRNA machinery in the cytoplasm. These findings unveil a positive function of microRNA in mitochondrial translation and suggest a highly coordinated myogenic program via miR-1-mediated translational stimulation in the mitochondria and repression in the cytoplasm.