/ 
bioperl-1.5.2_005-RCb
/ Bio::DB::SeqVersion::gi

NAME

Bio::DB::SeqVersion::gi - interface to NCBI Sequence Revision History page

SYNOPSIS

Do not use this module directly, use Bio::DB::SeqVersion.

use Bio::DB::SeqVersion;

my $query = Bio::DB::SeqVersion->new(-type => 'gi');

# all GIs, which will include the GI used to query
my @all_gis = $query->get_all(2);

# the most recent GI, which may or may not be the GI used to query
my $live_gi = $query->get_recent(2);

# get all the visible data on the Sequence Revision page
my $array_ref = $query->get_history(11111111);

These methods can also take accession numbers as arguments, just like the Sequence Revision page itself.

DESCRIPTION

All sequence entries at GenBank are identified by a pair of identifiers, an accession and a numeric identifier, and this number is frequently called a GI number (GenInfo Identifier). The accession is stable, but each new version of the sequence entry for the accession receives a new GI number (see http://www.ncbi.nlm.nih.gov/Sitemap/sequenceIDs.html for more information on GenBank identifiers). One accession can have one or more GI numbers and the highest of these is the most recent, or "live", GI.

Information on an accession and its associated GI numbers is available at the Sequence Revision History page at NCBI, http://www.ncbi.nlm.nih.gov/entrez/sutils/girevhist.cgi, this information is not available in file format. This module queries the Web page and retrieves GI numbers and related data given an accession (e.g. NP_111111, A11111, P12345) or a GI number (e.g. 2, 11111111) as query.

FEEDBACK

Mailing Lists

User feedback is an integral part of the evolution of this and other Bioperl modules. Send your comments and suggestions preferably to one of the Bioperl mailing lists. Your participation is much appreciated.

bioperl-l@bioperl.org                  - General discussion
http://bioperl.org/wiki/Mailing_lists  - About the mailing lists

Reporting Bugs

Report bugs to the Bioperl bug tracking system to help us keep track the bugs and their resolution. Bug reports can be submitted via the web:

http://bugzilla.open-bio.org/

AUTHOR - Brian Osborne

Email < osborne at optonline dot net >

CONTRIBUTORS

Torsten Seemann - torsten.seemann AT infotech.monash.edu.au

APPENDIX

The rest of the documentation details each of the object methods. Internal methods are usually preceded with a _

new

Title   : new
Usage   : $gb = Bio::DB::SeqVersion::gi->new
Function: Creates a new query object
Returns : New query object

get_all

Title   : get_all
Usage   : my @gis = $q->get_all(2)
Function: Get all GI numbers given a GI number
Returns : An array of GI numbers, earliest GI number is the 0 element
Args    : A single GI number (string)

get_recent

Title   : get_recent
Usage   : my $newest_gi = $q->get_recent(2)
Function: Get most recent GI given a single GI
Returns : String
Args    : A single GI number (string)

get_history

Title   : get_history
Usage   : my $ref = $query_obj->get_history()
Function: Queries the NCBI Revision page, gets the data from the HTML table
Returns : Reference to an array of arrays where element 0 refers to the most 
          recent version and the last element refers to the oldest version. 
          In the second dimension the elements are:

          0      GI number
          1      Version
          2      Update Date
          3      Status

          For example, to get the GI number of the first version:

          $ref->[$#{@$ref}]->[0]

          To get the Update Date of the latest version:

          $ref->[0]->[2]

Args    : One identifier (string)

_get_request

Title   : _get_request
Usage   : my $url = $self->_get_request
Function: GET using NCBI Revision page URL, uses Root::HTTPget
Returns : HTML
Args    : One identifier (string)

_process_data

Title   : _process_data
Usage   : $self->_process_data($html)
Function: extract data from HTML
Args    : HTML from Revision History page
Returns : reference to an array of arrays