September 30, 2005
  
We have identified a redundancy error in RefSeq release 13.

We inadvertently assigned new accessions for the transcript and protein 
products of two fungal genomes while processing an update, instead 
of re-using existing accessions.

The species affected are:

   Ustilago maydis
   NCBI Taxonomy ID:   237631
   Number of records duplicated:  13044

   Aspergillus  nidulans
   NCBI Taxonomy ID:   227321
   Number of records duplicated:  19082

The older accessions have been made secondary to the newer accessions.

A file reporting the accessions affected by this error is available on 
the FTP site. The file reports the pairwise relationship of the redundant 
data.  The column position indicates which has become a secondary accession
and which has been retained as the primary accession.


ftp://ftp.ncbi.nih.gov/refseq/release/release-catalog/

release13.redundancy-error-report

The file format is:

  column 1: NCBI Taxonomic ID
  column 2: accession.version - secondary
  column 3: gi - secondary
  column 4: accession.version - retained as primary
  column 5: gi - retained as primary


We apologize for the inconvenience this may cause.