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Translate from hsa-let- to MIMAT type

I am looking for a way to translate from mature sequence name hsa-let- to its Accession number MIMAT type in R, I find the biomaRt but it seems to be not ok. I want to have something like this http://www.mirbase.org/cgi-bin/mature.pl?mature_acc=MIMAT0000062 From hsa-let-7a-1 to MIMAT0000062 Thanks in advance!

My data: enter image description here

The result from my code: 

tmp = getBM(attributes = c("mirbase_id", "mirbase_accession"),
                     values = values,
                     mart = ensembl)

enter image description here

conversion
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updated by Ram Ram • written by landscape95 landscape95

From your data, hsa-let-7a-5p is miRNA' s ID, and it has serval stem-loop hsa-let-7a-1 hsa-let-7a-2 hsa-let-7a-3. So you need translate you data to stem-loop then map to MIMAT type.

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updated by Ram Ram • written by zjhzwang zjhzwang

Can you instruct me how to do that?

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written by landscape95 landscape95

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