[BioC] about refseq_dna in biomat

[Ou, Jianhong]

dear list,

I use biomaRt to get the genBank access id for some ensembl transcript ids. 

library(biomaRt)
ensembl = useMart("ensembl")
ensembl = useDataset("mmusculus_gene_ensembl",mart=ensembl)
access<-getBM(attributes = "refseq_dna", filters = "ensembl_transcript_id",values=ensembl_t_ids,mart=ensembl)

I got error,
Error in getBM(attributes = "refseq_dna", filters = "ensembl_transcript_id",  : 
  Invalid attribute(s): refseq_dna 
Please use the function 'listAttributes' to get valid attribute names

What attributes should I use to instead "refseq_dna"?

Yours sincerely,

Jianhong Ou

jianhong.ou at umassmed.edu