Extract protein sequence segments by position or range
Paste a raw sequence or one or more FASTA sequences. Input limit is 500,000,000 characters.
Enter residue positions or ranges. Use ".." for ranges, comma to separate. Keywords: start, end, center, length. Arithmetic expressions allowed, e.g., "(end - 2)..end" or "(center - 30)..(center + 30)".
How to return the extracted segments.
Paste your protein sequences in FASTA format. The tool accepts standard amino acid codes and automatically filters non-protein characters.
Enter positions or ranges like "1, 5, 10..12". Use keywords (start, end, center, length) or expressions like "(center - 30)..(center + 30)".
Select whether to output as a new combined sequence, separate FASTA records, or highlighted with uppercase/lowercase formatting.
Execute the extraction to obtain your protein domains or motifs, ready for downstream structural or functional analysis.
Extract specific protein domains, motifs, or functional regions using position information from databases.
Isolate specific parts of protein sequences for detailed structural or functional analysis.
Use uppercased or lowercased output to highlight important features like active sites or binding regions within their sequence context.
Extract specific regions for peptide synthesis or epitope analysis in immunological research.
5 - Extract residue at position 510..12 - Extract residues 10 through 121..10, 20..30, 50 - Extract multiple segmentsstart, end, center, length - Use sequence properties(end - 10)..end - Last 10 residues(center - 30)..(center + 30) - 61 residues around center