Physicochemical property distributions for accurate and rapid pairwise protein homology detection.
Identifieur interne : 001F60 ( PubMed/Corpus ); précédent : 001F59; suivant : 001F61Physicochemical property distributions for accurate and rapid pairwise protein homology detection.
Auteurs : Bobbie-Jo M. Webb-Robertson ; Kyle G. Ratuiste ; Christopher S. OehmenSource :
- BMC bioinformatics [ 1471-2105 ] ; 2010.
English descriptors
- KwdEn :
- MESH :
- chemical , chemistry : Proteins.
- methods : Computational Biology.
- Databases, Protein, Pattern Recognition, Automated, Sequence Homology, Amino Acid.
Abstract
The challenge of remote homology detection is that many evolutionarily related sequences have very little similarity at the amino acid level. Kernel-based discriminative methods, such as support vector machines (SVMs), that use vector representations of sequences derived from sequence properties have been shown to have superior accuracy when compared to traditional approaches for the task of remote homology detection.
DOI: 10.1186/1471-2105-11-145
PubMed: 20302613
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pubmed:20302613Le document en format XML
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<author><name sortKey="Webb Robertson, Bobbie Jo M" sort="Webb Robertson, Bobbie Jo M" uniqKey="Webb Robertson B" first="Bobbie-Jo M" last="Webb-Robertson">Bobbie-Jo M. Webb-Robertson</name>
<affiliation><nlm:affiliation>Computational Biology and Bioinformatics, Pacific Northwest National Laboratory, Richland, WA 99352, USA. bj@pnl.gov</nlm:affiliation>
</affiliation>
</author>
<author><name sortKey="Ratuiste, Kyle G" sort="Ratuiste, Kyle G" uniqKey="Ratuiste K" first="Kyle G" last="Ratuiste">Kyle G. Ratuiste</name>
</author>
<author><name sortKey="Oehmen, Christopher S" sort="Oehmen, Christopher S" uniqKey="Oehmen C" first="Christopher S" last="Oehmen">Christopher S. Oehmen</name>
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<sourceDesc><biblStruct><analytic><title xml:lang="en">Physicochemical property distributions for accurate and rapid pairwise protein homology detection.</title>
<author><name sortKey="Webb Robertson, Bobbie Jo M" sort="Webb Robertson, Bobbie Jo M" uniqKey="Webb Robertson B" first="Bobbie-Jo M" last="Webb-Robertson">Bobbie-Jo M. Webb-Robertson</name>
<affiliation><nlm:affiliation>Computational Biology and Bioinformatics, Pacific Northwest National Laboratory, Richland, WA 99352, USA. bj@pnl.gov</nlm:affiliation>
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<author><name sortKey="Ratuiste, Kyle G" sort="Ratuiste, Kyle G" uniqKey="Ratuiste K" first="Kyle G" last="Ratuiste">Kyle G. Ratuiste</name>
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<author><name sortKey="Oehmen, Christopher S" sort="Oehmen, Christopher S" uniqKey="Oehmen C" first="Christopher S" last="Oehmen">Christopher S. Oehmen</name>
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<series><title level="j">BMC bioinformatics</title>
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<imprint><date when="2010" type="published">2010</date>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Computational Biology (methods)</term>
<term>Databases, Protein</term>
<term>Pattern Recognition, Automated</term>
<term>Proteins (chemistry)</term>
<term>Sequence Homology, Amino Acid</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>Proteins</term>
</keywords>
<keywords scheme="MESH" qualifier="methods" xml:lang="en"><term>Computational Biology</term>
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<keywords scheme="MESH" xml:lang="en"><term>Databases, Protein</term>
<term>Pattern Recognition, Automated</term>
<term>Sequence Homology, Amino Acid</term>
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<front><div type="abstract" xml:lang="en">The challenge of remote homology detection is that many evolutionarily related sequences have very little similarity at the amino acid level. Kernel-based discriminative methods, such as support vector machines (SVMs), that use vector representations of sequences derived from sequence properties have been shown to have superior accuracy when compared to traditional approaches for the task of remote homology detection.</div>
</front>
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<DateCompleted><Year>2010</Year>
<Month>05</Month>
<Day>11</Day>
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<DateRevised><Year>2018</Year>
<Month>11</Month>
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<Title>BMC bioinformatics</Title>
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<ArticleTitle>Physicochemical property distributions for accurate and rapid pairwise protein homology detection.</ArticleTitle>
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<Abstract><AbstractText Label="BACKGROUND" NlmCategory="BACKGROUND">The challenge of remote homology detection is that many evolutionarily related sequences have very little similarity at the amino acid level. Kernel-based discriminative methods, such as support vector machines (SVMs), that use vector representations of sequences derived from sequence properties have been shown to have superior accuracy when compared to traditional approaches for the task of remote homology detection.</AbstractText>
<AbstractText Label="RESULTS" NlmCategory="RESULTS">We introduce a new method for feature vector representation based on the physicochemical properties of the primary protein sequence. A distribution of physicochemical property scores are assembled from 4-mers of the sequence and normalized based on the null distribution of the property over all possible 4-mers. With this approach there is little computational cost associated with the transformation of the protein into feature space, and overall performance in terms of remote homology detection is comparable with current state-of-the-art methods. We demonstrate that the features can be used for the task of pairwise remote homology detection with improved accuracy versus sequence-based methods such as BLAST and other feature-based methods of similar computational cost.</AbstractText>
<AbstractText Label="CONCLUSIONS" NlmCategory="CONCLUSIONS">A protein feature method based on physicochemical properties is a viable approach for extracting features in a computationally inexpensive manner while retaining the sensitivity of SVM protein homology detection. Furthermore, identifying features that can be used for generic pairwise homology detection in lieu of family-based homology detection is important for applications such as large database searches and comparative genomics.</AbstractText>
</Abstract>
<AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Webb-Robertson</LastName>
<ForeName>Bobbie-Jo M</ForeName>
<Initials>BJ</Initials>
<AffiliationInfo><Affiliation>Computational Biology and Bioinformatics, Pacific Northwest National Laboratory, Richland, WA 99352, USA. bj@pnl.gov</Affiliation>
</AffiliationInfo>
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<Author ValidYN="Y"><LastName>Ratuiste</LastName>
<ForeName>Kyle G</ForeName>
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<Author ValidYN="Y"><LastName>Oehmen</LastName>
<ForeName>Christopher S</ForeName>
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