R help - Jul 2009 - How to prpare the input data to writeFASTA ? Examples of CharacterToFASTArecords ...

I realize function write FASTA expects a list with two items, respectively,
description and sequence.
However, just passing a list won't work (please, see code at the bottom of
this message)
I saw there is the helper function CharacterToFASTArecords(x) that presumably
generates the right input  data format.
It would b very useful to get some example of CharacterToFASTArecords(x) usage.
The on-line documentation reads:
"For CharacterToFASTArecords, the (possibly named) character vector to be
converted to a list of FASTA records as one returned by readFASTA"
Since I have description and sequnce in separate variables ... I do not know how
to use it.


      zz <- file (filname,"w")
           write(miRNA.rec, zz, append = FALSE)
           write(miRNA.seq,zz, append = TRUE)
#
       geneDesc <- paste (">",gene.id, "|",
gene.map[i,"ensembl_transcript_id"], sep="")
          geneSeq <-  gene.seq[i,"3utr"]
          gene.string <- list(desc=geneDesc, seq=geneSeq)
          writeFASTA (gene.string, zz)

Thank you in advance for your help.
Maura



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