De novo protein sequence analysis of Macaca mulatta
peer-reviewed · BMC Genomics · 2007
| Date | 2007-01-01 |
| Type | peer-reviewed |
| Venue | BMC Genomics |
| Publisher | Springer Science and Business Media LLC |
| Contribution | downstream-application |
| DOI | 10.1186/1471-2164-8-270 |
| Citations (OpenAlex) | 33 |
Abstract
Background Macaca mulatta is one of the most utilized non-human primate species in biomedical research offering unique behavioral, neuroanatomical, and neurobiochemcial similarities to humans. This makes it a unique organism to model various diseases such as psychiatric and neurodegenerative illnesses while also providing insight into the complexities of the primate brain. A major obstacle in utilizing rhesus monkey models for human disease is the paucity of protein annotations for this species (~42,000 protein annotations) compared to 330,210 protein annotations for humans. The lack of available information limits the use of rhesus monkey for proteomic scale studies which rely heavily on database searches for protein identification. While characterization of proteins of interest from Macaca mulatta using the standard database search engines (e.g., MASCOT) can be accomplished, searches must be performed using a ‘broad species database’ which does not provide optimal confidence in protein annotation. Therefore, it becomes necessary to determine partial or complete amino acid sequences using either manual or automated de novo peptide sequence analysis methods. Results The recently popularized MALDI-TOF-TOF mass spectrometer yields a complex MS/MS fragmentation pattern difficult to characterize by manual de novo sequencing method on a proteomics scale. Therefore, PEAKS assisted de novo sequencing was performed on nucleus accumbens cytosolic proteins from Macaca mulatta. The most abundant peptide fragments ‘b-ions and y-ions’, the less abundant peptide fragments ‘a-ions’ as well as the immonium ions were utilized to develop confident and complete peptide sequences de novo from MS/MS spectra. The generated sequences were used to perform homology searches to characterize the protein identification. Conclusion The current study validates a robust method to confidently characterize the proteins from an incomplete sequence database of Macaca mulatta, using the PEAKS de novo sequencing software, facilitating the use of this animal model in various neuroproteomics studies.
Methods and tools
- Rhesus macaque proteome annotation: Applies de novo sequencing at proteomic scale to Macaca mulatta, whose roughly 42,000 protein annotations against a human 330,000 make database search unreliable, so that a primate disease model can be studied proteomically at all.
Methods it uses
- PEAKS: Commercial DP-based de novo
Cites (5)
- A case study of de novo sequence analysis of N-sulfonated peptides by MALDI TOF/TOF mass spectrometry (2004) semanticscholar
- “De novo” peptide sequencing by MALDI-quadrupole-ion trap mass spectrometry: A preliminary study (2003) semanticscholar
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Cited by (4)
- A potential golden age to come—current tools, recent use cases, and future avenues for de novo sequencing in proteomics (2018) crossref
- Mass spectrometry-assisted venom profiling of Hypnale hypnale found in the Western Ghats of India incorporating de novo sequencing approaches (2018) crossref
- De Novo Sequencing and Homology Searching (2012) both
- Algorithms for the de novo sequencing of peptides from tandem mass spectra (2011) crossref