Bio::DB::GenBank - Database object interface to GenBank
$gb = new Bio::DB::GenBank; $seq = $gb->get_Seq_by_id('MUSIGHBA1'); # Unique ID # or ... $seq = $gb->get_Seq_by_acc('J00522'); # Accession Number # or ... best when downloading very large files, prevents # keeping all of the file in memory # also don't want features, just sequence so let's save bandwith # and request Fasta sequence $gb = new Bio::DB::GenBank(-retrievaltype => 'tempfile' , -format => 'Fasta'); my $seqio = $gb->get_Stream_by_acc(['AC013798', 'AC021953'] ); while( my $clone = $seqio->next_seq ) { print "cloneid is ", $clone-> }
Allows the dynamic retrieval of Sequence objects (Bio::Seq) from the GenBank database at NCBI, via an Entrez query.
WARNING: Please do NOT spam the Entrez web server with multiple requests. NCBI offers Batch Entrez for this purpose. Batch Entrez support will likely be supported in a future version of DB::GenBank.
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The rest of the documentation details each of the object methods. Internal methods are usually preceded with a _
Title : get_params Usage : my %params = $self->get_params($mode) Function: Returns key,value pairs to be passed to NCBI database for either 'batch' or 'single' sequence retrieval method Returns : a key,value pair hash Args : 'single' or 'batch' mode for retrieval
Title : get_Seq_by_id Usage : $seq = $db->get_Seq_by_id('ROA1_HUMAN') Function: Gets a Bio::Seq object by its name Returns : a Bio::Seq object Args : the id (as a string) of a sequence Throws : "id does not exist" exception
Title : get_Seq_by_acc Usage : $seq = $db->get_Seq_by_acc($acc); Function: Gets a Seq object by accession numbers Returns : a Bio::Seq object Args : the accession number as a string Note : For GenBank, this just calls the same code for get_Seq_by_id() Throws : "id does not exist" exception
Title : get_request Usage : my $url = $self->get_request Function: HTTP::Request Returns : Args : %qualifiers = a hash of qualifiers (ids, format, etc)
Title : get_Stream_by_batch Usage : $seq = $db->get_Stream_by_batch($ref); Function: Retrieves Seq objects from Entrez 'en masse', rather than one at a time. For large numbers of sequences, this is far superior than get_Stream_by_[id/acc](). Example : Returns : a Bio::SeqIO stream object Args : $ref : either an array reference, a filename, or a filehandle from which to get the list of unique ids/accession numbers.
Title : get_Stream_by_id Usage : $stream = $db->get_Stream_by_id( [$uid1, $uid2] ); Function: Gets a series of Seq objects by unique identifiers Returns : a Bio::SeqIO stream object Args : $ref : a reference to an array of unique identifiers for the desired sequence entries
Title : get_Stream_by_acc Usage : $seq = $db->get_Stream_by_acc([$acc1, $acc2]); Function: Gets a series of Seq objects by accession numbers Returns : a Bio::SeqIO stream object Args : $ref : a reference to an array of accession numbers for the desired sequence entries Note : For GenBank, this just calls the same code for get_Stream_by_id()
1; __END__
To install Bio::Seq, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Bio::Seq
CPAN shell
perl -MCPAN -e shell install Bio::Seq
For more information on module installation, please visit the detailed CPAN module installation guide.