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• W2156877249 abstract "Abstract Accurate tertiary structures are very important for the functional study of non-coding RNA molecules. However, predicting RNA tertiary structures is extremely challenging, because of a large conformation space to be explored and lack of an accurate scoring function differentiating the native structure from decoys. The fragment-based conformation sampling method (e.g. FARNA) bears shortcomings that the limited size of a fragment library makes it infeasible to represent all possible conformations well. A recent dynamic Bayesian network method, BARNACLE, overcomes the issue of fragment assembly. In addition, neither of these methods makes use of sequence information in sampling conformations. Here, we present a new probabilistic graphical model, conditional random fields (CRFs), to model RNA sequence–structure relationship, which enables us to accurately estimate the probability of an RNA conformation from sequence. Coupled with a novel tree-guided sampling scheme, our CRF model is then applied to RNA conformation sampling. Experimental results show that our CRF method can model RNA sequence–structure relationship well and sequence information is important for conformation sampling. Our method, named as TreeFolder, generates a much higher percentage of native-like decoys than FARNA and BARNACLE, although we use the same simple energy function as BARNACLE. Contact: zywang@ttic.edu; j3xu@ttic.edu Supplementary Information: Supplementary data are available at Bioinformatics online." @default.
• W2156877249 created "2016-06-24" @default.
• W2156877249 creator A5019398608 @default.
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• W2156877249 date "2011-06-14" @default.
• W2156877249 modified "2023-10-17" @default.
• W2156877249 title "A conditional random fields method for RNA sequence–structure relationship modeling and conformation sampling" @default.
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• W2156877249 doi "https://doi.org/10.1093/bioinformatics/btr232" @default.
• W2156877249 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3117333" @default.
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• W2156877249 hasPublicationYear "2011" @default.
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