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Detecting Subtle Sequence Signals: A Gibbs Sampling Strategy for Multiple Alignment

文献名称 Detecting Subtle Sequence Signals: A Gibbs Sampling Strategy for Multiple Alignment
文献作者 Charles E. Lawrence; Stephen F. Altschul; Mark S. Boguski; Jun S. Liu; Andrew F. Neuwald;John C. Wootton
作者所在单位 C. E. Lawrence, S. F. Altschul, M. S. Boguski, A. F.Neuwald, and J. C. Wootton are with the National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda MD 20894. J. S. Liu is with the Statistics Dep
文献分类 已发表文献
学科一级分类 统计
学科二级分类 统计学
文献摘要 A wealth of protein and DNA sequence data is being generated by genome projects and
other sequencing efforts. A crucial barrier to deciphering these sequences and understanding
the relationsamongthem isthe difficulty of detectingsubtle local residue patterns
common to multiple sequences. Such patterns frequently reflect similar molecular structures
and biologicalproperties.A mathematical definition of this "local multiple alignment"
problem suitable for full computer automation has been used to develop a new and
sensitive algorithm, based on the statistical method of iterative sampling. This algorithm
finds an optimized local alignment model for Nsequences in Nlinear time, requiring only
seconds on current workstations, and allows the simultaneous detection and optimization
of multiple patterns and pattern repeats. The method is illustrated as applied to helixturn-
helix proteins, lipocalins, and prenyltransferases.
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0.01 M sodium phosphate buffer, pH 7.4. Four
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conjugated to KLH and RIB1 adjuvant (MPL
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the mouse with the highest titer was injected
intravenously with 50 pg of KLH-conjugate; 3
days later, the spleen was taken for the preparation
of hybridomas. Spleen cells (1.0 x 108) were
fused with 2.0 x 10' SP2IO myeloma cells. Cells
were plated into 30 96-well plates; each well
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an isocratic program of 78122; H,O (0.1% trifluoroacetic
acid)iacetonitrile, at 1.5 mlimin, 240
nm. The retention time for the trans isomer is
6.00 min and for the cis isomer is 6.60 min.
23. We thank J. Ashley for technical assistance in
the kinetic analysis; L. Ghosez, K. B. Sharpless,
K. C. Nicolaou, E. Keinan, and D. Boger for
helpful discussions and comments on the manuscript;
and R. K. Chadha for the x-ray crystallographic
study. Supported in part by the National
Science Foundation (CHE-9116377) and the A.
P. Sloan Foundation (K.D.J.). We also thank
Fundacion Ramon-Areces (Spain) for a fellowship
to B.P.T.
关键字 Subtle Sequence Signals ;A Gibbs Sampling Strategy ; Multiple Alignment
发表所在刊物(或来源) Science, New Series, Vol. 262, No. 5131. (Oct. 8, 1993), pp. 208-214
发表时间 Oct. 8, 1993
适用研究领域 统计学
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