NovoHMM: A Hidden Markov Model for de Novo Peptide Sequencing
peer-reviewed · Analytical Chemistry · 2005
peer-reviewed · Analytical Chemistry · 2005. Bernd Fischer et al. De novo sequencing of peptides poses one of the most challenging tasks in data analysis for proteome…
| Date | 2005-11-15 |
| Type | peer-reviewed |
| Venue | Analytical Chemistry |
| Publisher | American Chemical Society (ACS) |
| Contribution | algorithm |
| DOI | 10.1021/ac0508853 |
| Citations (OpenAlex) | 192 |
| Venue 2-year citedness | 7.10 |
Abstract
De novo sequencing of peptides poses one of the most challenging tasks in data analysis for proteome research. In this paper, a generative hidden Markov model (HMM) of mass spectra for de novo peptide sequencing which constitutes a novel view on how to solve this problem in a Bayesian framework is proposed. Further extensions of the model structure to a graphical model and a factorial HMM to substantially improve the peptide identification results are demonstrated. Inference with the graphical model for de novo peptide sequencing estimates posterior probabilities for amino acids rather than scores for single symbols in the sequence. Our model outperforms state-of-the-art methods for de novo peptide sequencing on a large test set of spectra.
Methods and tools
- NovoHMM: Generative HMM scoring
Cites (3)
Cited by (86)
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