[Bioperl-l] how to retrieve organism name from accession number?

[Smithies, Russell]

An alternate non-BioPerly way (that may be faster given NCBI's flakiness lately) would be to download the gi_taxid_nucl.zip or gi_taxid_prot.zip files from ftp://ftp.ncbi.nih.gov/pub/taxonomy/, load them into a hash and do lookups. 
In that same dir, taxdump.tar.gz contains a file called names.dmp which lists taxids and descriptions (and synonyms)

If it was me, I'd split gi_taxid_nucl and names.dmp into hashes so I could do this:

   my $taxid  = $gi_taxid_nucl{$accession};
   my $org_name = $names{$taxid};

--Russell


> -----Original Message-----
> From: bioperl-l-bounces at lists.open-bio.org [mailto:bioperl-l-
> bounces at lists.open-bio.org] On Behalf Of Mark A. Jensen
> Sent: Saturday, 26 December 2009 4:52 p.m.
> To: Bhakti Dwivedi; bioperl-l at lists.open-bio.org
> Subject: Re: [Bioperl-l] how to retrieve organism name from accession
> number?
> 
> Bhakti,
> The following example (using EUtilities) may serve your purpose:
> 
> use Bio::DB::EUtilities;
> 
> my (%taxa, @taxa);
> my (%names, %idmap);
> 
> # these are protein ids; nuc ids will work by changing -dbfrom =>
> 'nucleotide',
> # (probably)
> 
> my @ids = qw(1621261 89318838 68536103 20807972 730439);
> 
> my $factory = Bio::DB::EUtilities->new(-eutil => 'elink',
>                                        -db => 'taxonomy',
>                                        -dbfrom => 'protein',
>                                        -correspondence => 1,
>                                        -id => \@ids);
> 
> # iterate through the LinkSet objects
> while (my $ds = $factory->next_LinkSet) {
>     $taxa{($ds->get_submitted_ids)[0]} = ($ds->get_ids)[0]
> }
> 
> @taxa = @taxa{@ids};
> 
> $factory = Bio::DB::EUtilities->new(-eutil => 'esummary',
>         -db    => 'taxonomy',
>         -id    => \@taxa );
> 
> while (local $_ = $factory->next_DocSum) {
>     $names{($_->get_contents_by_name('TaxId'))[0]} =
> ($_->get_contents_by_name('ScientificName'))[0];
> }
> 
> foreach (@ids) {
>     $idmap{$_} = $names{$taxa{$_}};
> }
> 
> # %idmap is
> #    1621261 => 'Mycobacterium tuberculosis H37Rv'
> #    20807972 => 'Thermoanaerobacter tengcongensis MB4'
> #    68536103 => 'Corynebacterium jeikeium K411'
> #    730439 => 'Bacillus caldolyticus'
> #    89318838 => undef    (this record has been removed from the db)
> 
> 1;
> 
> You probably will need to break up your 30000 into chunks
> (say, 1000-3000 each), and do the above on each chunk with a
> 
> sleep 3;
> 
> or so separating the queries.
> MAJ
> ----- Original Message -----
> From: "Bhakti Dwivedi" <bhakti.dwivedi at gmail.com>
> To: <bioperl-l at lists.open-bio.org>
> Sent: Friday, December 25, 2009 9:46 PM
> Subject: [Bioperl-l] how to retrieve organism name from accession number?
> 
> 
> > Hi,
> >
> > Does anyone know how to retrieve the "Source" or the "Species name"
> given
> > the accession number using Bioperl.   I have these 30,000 accession
> numbers
> > for which I need to get the source organisms.  Any kind of help will be
> > appreciated.
> >
> > Thanks
> >
> > BD
> > _______________________________________________
> > Bioperl-l mailing list
> > Bioperl-l at lists.open-bio.org
> > http://lists.open-bio.org/mailman/listinfo/bioperl-l
> >
> >
> 
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