hi,
I am having problem with biomart, I have the same error also with other
query:

 > mart <- useMart("ensembl",dataset="hsapiens_gene_ensembl")
Checking attributes and filters ... ok
> getSequence(id="BRCA1", type="hugo", seqType="peptide", mart = mart)
>1 Query ERROR: caught BioMart::Exception::Usage: Attribute biotype NOT
FOUND

> sessionInfo()
R version 2.4.0 (2006-10-03)
i686-pc-linux-gnu
locale:
LC_CTYPE=en_US.UTF-8;LC_NUMERIC=C;LC_TIME=en_US.UTF-8;LC_COLLATE=en_US.UTF-8;LC_MONETARY=en_US.UTF-8;LC_MESSAGES=en_US.UTF-8;LC_PAPER=en_US.UTF-8;LC_NAME=C;LC_ADDRESS=C;LC_TELEPHONE=C;LC_MEASUREMENT=en_US.UTF-8;LC_IDENTIFICATION=C
attached base packages:
[1] "methods"   "stats"     "graphics"  "grDevices" "utils"     "datasets"
[7] "base"

other attached packages:
  biomaRt     RCurl       XML
  "1.8.2"   "0.8-0" "0.99-93"

Thank you Marco

---------------------------------------
Marco Fabbri
Istituto Clinico Humanitas
via Manzoni, 56
20089 Rozzano (Mi)
Tel. 028224 5136
Fax 028224 5101

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