Overview
- A Nature paper announced Wednesday by the TransCODE Consortium named these short translation products “peptideins” and began their inclusion in major gene and protein databases.
- From 7,264 candidate sequences, only 15 met strong evidence for protein‑coding status, and the European Bioinformatics Institute has already added at least three entries.
- Very small proteins often evade standard mass‑spectrometry rules that demand two unique peptides about 18 amino acids long, so the team relaxed those thresholds to spot shorter molecules.
- Researchers also pulled in ribosome profiling, new evolutionary pressure scores, and CRISPR loss‑of‑function screens to test whether the tiny products exist and affect cells.
- Most peptideins remain uncharacterized, some show links to diseases such as childhood cancers, and early estimates suggest thousands more could be found, possibly pushing added entries toward 20,000.