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Stochastic context-free grammers for tRNA modeling

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Sakakibara, Yasubumi, Brown, Michael, Hughey, Richard, Mian, I. Saira, Sjölander, Kimmen, Underwood, Rebecca C., Haussler, David·1994·Nucleic Acids Research

Abstract

Stochastic context-free grammars (SCFGs) are applied to the problems of folding, aligning and modeling families of tRNA sequences. SCFGs capture the sequences' common primary and secondary structure and generalize the hidden Markov models (HMMs) used in related work on protein and DNA. Results show that after having been trained on as few as 20 tRNA sequences from only two tRNA subfamilies (mitochondrial and cytoplasmic), the model can discern general tRNA from similar-length RNA sequences of other kinds, can find secondary structure of new tRNA sequences, and can produce multiple alignments of large sets of tRNA sequences. Our results suggest potential improvements in the alignments of the D- and T-domains in some mitochondrial tRNAs that cannot be fit into the canonical secondary structure.

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Authors
Sakakibara, Y., Brown, M., Hughey, R., Mian, I. S., Sjölander, K., Underwood, R. C., & Haussler, D.
Venue
Nucleic Acids Research
Published
1994
Volume
22
Issue
23
Pages
5112-5120
ISSN
  • 0305-1048 (ISSN-L)
  • 1362-4962
OpenAlex
W2023206235
Cited by
383
References
0
FWCI
2.33
Type
journal article
Language
en
Open access
bronze

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