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Article #8Re: Order of BLAST matches
From: Kevin Karplus
Date: Mon, 01 Nov 2004 19:29
Date: Mon, 01 Nov 2004 19:29
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In article <d2f49f4e.0410192324.122559a8@posting.google.com>, Jonas Andersson wrote: > Sometimes when I do a nucleotide BLAST on Genbank, I find that the top > four-five hits have identical E-values and score. How are these hits > ordered in such cases? Is there any reason why I should prefer the > top-most one? The order is arbitrary (probably the order in the underlying database), and you should not favor the first one. ------------------------------------------------------------ Kevin Karplus karplus@soe.ucsc.edu http://www.soe.ucsc.edu/~karplus Professor of Biomolecular Engineering, University of California, Santa Cruz Undergraduate and Graduate Director, Bioinformatics Senior member, IEEE Board of Directors, ISCB (starting Jan 2005) life member (LAB, Adventure Cycling, American Youth Hostels) Effective Cycling Instructor #218-ck (lapsed) Affiliations for identification only.
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X-Google-Thread: 111744,47dc89982268d844 X-Google-Attributes: gid111744,public X-Google-Language: ENGLISH,ASCII-7-bit Path: arc1-ca.pugleaf.net!g2news1.google.com!news2.google.com!newsfeed2.dallas1.level3.net!news.level3.com!bloom-beacon.mit.edu!rfcgr.mrc.ac.uk!hgmp.mrc.ac.uk!net.bio.net From: Kevin Karplus <karplus@cheep.cse.ucsc.edu> Newsgroups: bionet.software.www Subject: Re: Order of BLAST matches Date: 1 Nov 2004 19:29:22 -0000 Organization: BIOSCI/MRC Rosalind Franklin Centre for Genomics Research Lines: 20 Sender: mod-www@rfcgr.mrc.ac.uk Approved: BIOSCI Approval Key <biosci-approval-key@net.bio.net> Message-ID: <slrncngepu.2a7.karplus@cheep.cse.ucsc.edu> References: <d2f49f4e.0410192324.122559a8@posting.google.com> NNTP-Posting-Host: mercury.hgmp.mrc.ac.uk X-Trace: helium.hgmp.mrc.ac.uk 1099337363 3789 193.62.192.80 (1 Nov 2004 19:29:23 GMT) X-Complaints-To: news@net.bio.net NNTP-Posting-Date: Mon, 1 Nov 2004 19:29:23 +0000 (UTC) X-Original-To: bionet-software-www@net.bio.net User-Agent: slrn/0.9.7.4 (Linux) X-UCSC-CATS-MailScanner: Found to be clean X-Auth: PGPMoose V1.1 PGP bionet.software.www iQCVAwUAQYaOkqCIqsWvyF5FAQFeWwP+IUgNMJe5VH6GbF7LSclyMQ1QDqrKdtZt W/cqGWQMmbinDUOj/z45BuWMO4i3GEsS55FtSAvXttUteX4v3W1ix/mJaMG3UQNl t1qT6+7b4eYoL+W06PNwwgXPcbJR5pFCE4s3C4/pxKJ1CAd+KhrytglWBy3p0QH4 S8nAcQXdtf4= =SAfU