Random protein generator

Generate random protein sequences with specified length and amino acid composition. Create single or multiple sequences for testing, simulations, and bioinformatics research.

Generator settings

Length (amino acids)

1 - 10,000 aa

Number of sequences

1 - 1,000 sequences

Amino acid frequency mode

Set custom hydrophobicity

Hydrophobicity

0.0 - 1.0 (50%)

Sequence name prefix

Prefix for FASTA headers (e.g., random_protein_1)

Quick presets

About amino acid composition

Hydrophobicity affects protein structure, solubility, and function:

• Low hydrophobicity (0-30%): Hydrophilic, water-soluble, surface-exposed
• Medium hydrophobicity (30-70%): Balanced properties, typical for many proteins
• High hydrophobicity (70-100%): Hydrophobic, membrane-associated, buried residues

Generated sequences

FASTA