getSeqTable will query 5' UTR or 3' UTR sequences of a list of transcripts from Ensembl database
getSeqTable(
transcriptIds,
seqType,
species,
ensemblVersion,
dataDir,
downstream = NULL,
upstream = NULL
)a list of Ensembl transcript ids
Either '5utr' or '3utr'. 5utr' for 5' UTR sequence, '3utr' for 3' UTR sequences
human or mouse
directory to store DB information
sequences table containing columns: ensembl_transcript_id and seq