Protein Pattern Search

Find sequence patterns and motifs in protein sequences using regular expressions. Search for conserved domains and functional sites.

Examples: RGD (exact match), C.{2,4}C (Cys separated by 2-4 aa), [ST]P (Ser or Thr before Pro)

Highlighted Matches in Sequence

What is Protein Pattern Search?

Protein Pattern Search finds specific amino acid patterns and motifs in protein sequences using regular expressions. Search for functional sites, conserved domains, binding motifs, and post-translational modification sites.

How to Use This Tool

Find protein patterns in 3 steps:

  1. Paste or upload your protein sequence
  2. Enter pattern (regex) to search for
  3. View matches with positions

When to Use

This tool is useful when you need to:

  • Find functional motifs (RGD, KDEL, NLS)
  • Locate phosphorylation sites ([ST]P)
  • Identify cysteine patterns (disulfide bonds)
  • Search for conserved domains

Example Input

Sample protein sequence:

Sequence: MASRGDKCELSPQRGDCKTSG
Pattern: RGD

Try the Example button for a demo.

Example Output

Pattern matches found:

Found 2 matches for pattern "RGD":
Match 1 at position 4-6: RGD
Match 2 at position 15-17: RGD

Shows position and matched sequence.

FAQ

Q: What pattern syntax is supported?
A: Standard regex: . (any), [] (set), {n,m} (repeat), [^] (not), + (one or more).

Q: Can I search multiple sequences?
A: Yes, paste multiple FASTA sequences and all will be searched.