Title
Statistical Significance of Threading Scores.
Abstract
We present a general method for assessing threading score significance. The threading score of a protein sequence, thread onto a given structure, should be compared with the threading score distribution of a random amino-acid sequence, of the same length, thread on the same structure; small p-values point significantly high scores. We claim that, due to general protein contact map properties, this reference distribution is a Weibull extreme value distribution whose parameters depend on the threading method, the structure, the length of the query and the random sequence simulation model used. These parameters can be estimated off-line with simulated sequence samples, for different sequence lengths. They can further be interpolated at the exact length of a query, enabling the quick computation of the p-value.
Year
DOI
Venue
2012
10.1089/cmb.2011.0236
JOURNAL OF COMPUTATIONAL BIOLOGY
Keywords
Field
DocType
computational molecular biology,Markov chains,sequence analysis,statistics,stochastic process
Generalized extreme value distribution,Random sequence,Threading (manufacturing),Weibull distribution,Stochastic process,Thread (computing),Probability distribution,Bioinformatics,Mathematics,Protein contact map
Journal
Volume
Issue
ISSN
19.0
1
1066-5277
Citations 
PageRank 
References 
1
0.36
2
Authors
5
Name
Order
Citations
PageRank
Afshin Fayyaz Movaghar110.36
Guillaume Launay2974.98
S Schbath330340.02
Jean-françois Gibrat41266.08
François Rodolphe5382.55