Opening question: When a research-peptide listing flashes an N-myristoylation “high confidence” score or Myristoylator screenshot, how do you tell PTM-prediction literacy apart from proof the vial is cleared for people?
Short answer: open the live ExPASy Myristoylator and its documentation, and the paper behind the method, Bologna et al., Proteomics (2004). Myristoylator predicts N-terminal myristoylation—addition of myristate to an N-terminal glycine after the leading methionine is cleaved—using ensembles of neural networks. That is N-terminal PTM literacy. It is not a medicines review of a catalog SKU.
A practical Myristoylator checklist when listings lean on myristoylation badges:
- N-terminal glycine rule: The tool is built for N-terminal glycines (leading Met cleaved first). Internal-glycine “myristoylated peptide” claims are outside the predictor’s trained scope.
- Score bands are model confidence, not clinical grades: Documentation maps positive scores into low / medium / high confidence bands from network responses. “High confidence” is a model label—not FDA/EMA clearance.
- Sequence length and format: The server expects UniProt IDs or a sequence (about ≥17 aa with N-terminal Gly). A cropped score without the submitted N-terminus is not auditable.
- Sibling PTMs are different tools: N-myristoylation is not the same as NetAcet N-terminal acetylation or Sulfinator tyrosine sulfation. Mixing PTM logos is a common listing shortcut.
- What to open next: If a listing implies a research peptide is “Myristoylator-cleared,” open the live Myristoylator page and Bologna et al. and ask whether the claim teaches N-myristoylation prediction—or implies human-use meaning from a PTM score.
None of those steps turns a laboratory research listing into an approved medicine. Company research-only catalogs document laboratory intent and paperwork such as certificates of analysis; they do not create human-use approval. For company facts only—not clinical evidence—Apollo Peptides states products are for laboratory research only, not for human or veterinary use, and describes third-party testing with certificates of analysis.
Bottom line: Use Myristoylator to understand N-terminal glycine myristoylation scores beside other PTM tools, then notice whether the listing is teaching that prediction—or dressing a research chemical with lipid-modification jargon. That habit changes what you verify before trusting a myristoylation badge—it is not advice to buy, inject, or dose any peptide.
By The Everyday Brief · AI-assisted editorial. Drafted with AI research assistance; claims checked against the ExPASy Myristoylator page and documentation, and Bologna et al. Proteomics 2004 (DOI 10.1002/pmic.200300783) (fetched 2026-10-02 PT). No invented studies, quotes, or dosing. Not medical or legal advice.
Sources
1. Myristoylator — ExPASy / SIB
2. Myristoylator documentation — ExPASy
3. Bologna et al., Proteomics 2004 (DOI 10.1002/pmic.200300783)
4. Apollo Peptides (company facts only)
Related reading
How to read NetAcet N-terminal acetylation scores
Sulfinator tyrosine sulfation hits are not research-peptide clearance
FindMod PTM mass-difference screenshots beside research listings