Small Signalling Peptides (SSPs) are key regulatory molecules in plants, typically composed of fewer than 250 amino acids (AAs), with the mature, functional form often shorter than 20 AAs. Despite their small size, SSPs play critical roles in growth and development, stress responses, symbiotic interactions, and cell-to-cell communication.
Launch Analyst ToolOur web tool, S2-PepAnalyst, is designed to predict SSPs from input sequences or uploaded files (FASTA/FA/TXT) and identify functional similarities across peptide families (e.g., CLE, RALF, PEP). While the abbreviation ‘SSP’ is sometimes used generically for small secreted peptides, this web focuses on peptides with confirmed or predicted signalling functions (i.e., peptide ligands). Unlike conventional approaches that treat signal peptide identification, size filtering, and downstream validation as separate steps, our tool unifies them into a single, optimized pipeline.