I'd like to figure out the difference between validated miRNAs whose identifiers only differ by a "*".

I downloaded the miRNA  datasets "hsSeqs" and "hsTargets" and noticed  that none of the miRNA identifiers
 in dataset "hsSeqs" contains the character "*"  whereas many miRNA identifiers in dataset  "hsTargets" end with
 the character "*". I checked a couple of them and found out that the set of Ensembl-Transcript_Identifiers for 
"hsa-miR-18a" and the set of Ensembl-Transcript_Identifiers for "hsa-miR-18a*" are disjoined.
Therefore "hsa-miR-18a"  and  "hsa-miR-18a*" seem to be two different entities. I wonder whether 
  "hsa-miR-18a"  and  "hsa-miR-18a*" share the same sequence even if apparently they bind to different
gene transcripts.  

My naive question is: 
how can I find the sequence of those miRNAs whose identifier ends with a "*" given that none of the miRNA identifiers in dataset "hsSeqs" contain a "*" ?
In short, I kind of realized that  "hsa-miR-xxx*"  is an evolution of  "hsa-miR-xxx". 
But when  it comes to dig out the 3UTR sequences of the relative targets which one of the two versions ( "hsa-miR-xxx"  or  "hsa-miR-xxx*" ) shall I ascribe them to ?

Thank you in advance for your attention.
Maura 



tutti i telefonini TIM!





tutti i telefonini TIM!


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