Fuzzy Search Protein

Search for protein sequences with exact or approximate matches. Find similar peptides, conserved motifs, and mutation variants with customizable error tolerance.

Max Mismatches1
Case Insensitive

Analysis Results

What is Fuzzy Search Protein?

Fuzzy Search Protein allows you to find approximate matches of a protein motif or peptide sequence within larger protein sequences. Unlike exact matching, fuzzy search tolerates a specified number of mismatches, making it ideal for finding conserved domains, mutation variants, or similar sequences.

How to Use This Tool

Search for protein patterns:

  1. Paste your protein sequences (FASTA or plain text)
  2. Enter the search pattern (amino acid sequence or motif)
  3. Set max mismatches (0 for exact match)
  4. Toggle case sensitivity if needed
  5. Results appear automatically

When to Use

This tool is useful when you need to:

  • Find conserved motifs across multiple sequences
  • Locate potential mutation sites
  • Identify similar peptide patterns
  • Search for binding sites or active sites
  • Discover sequence variants with point mutations

Example Search

Searching for RGD motif with 1 mismatch:

Pattern: RGD
Max mismatches: 1
Finds: RGD, RGE, RGN, RAD, KGD, etc.

Try the Example button for a demo.

IUPAC Support

The tool supports ambiguous amino acid codes:

  • X: Any amino acid
  • B: Aspartate or Asparagine (D or N)
  • Z: Glutamate or Glutamine (E or Q)
  • J: Leucine or Isoleucine (L or I)

FAQ

Q: What is the maximum pattern length?
A: No limit, but longer patterns may take more time to search.

Q: Can I search multiple sequences at once?
A: Yes, paste sequences in FASTA format. Each sequence is searched independently.