Extract a window of sequence around a position
Paste raw sequence or one or more FASTA sequences. Input limit is 500,000,000 characters.
Size of the window to extract (number of residues)
How to position the window relative to the specified position
The residue position for window extraction
How to format the extracted window in the output
Paste your protein sequences in FASTA format and specify the residue position around which you want to extract a window.
Define the window size (number of residues) and orientation (centered, ending, or starting at the specified position).
Select output mode: extract as a new sequence, or show the window highlighted within the full sequence using case formatting.
Execute the extraction and download results for active site analysis, mutation context studies, or epitope mapping applications.
Extract residues around catalytic sites or binding pockets to analyze local sequence context and conservation.
Extract sequences centered on mutation positions to study the structural and functional context of variants.
Extract windows around known epitope positions to design peptides for immunological studies.
Extract sequences around predicted domain boundaries to refine cloning strategies or structural studies.
Centered:
The window is centered on the specified position. For a window of size 5 at position 10, residues 8-12 would be extracted.
Position 10: start = 10 - round(5/2) + 1 = 8, end = 12Ending:
The window ends at the specified position. For a window of size 5 ending at position 20, residues 16-20 would be extracted.
Position 20: start = 20 - 5 + 1 = 16, end = 20Starting:
The window starts at the specified position. For a window of size 5 starting at position 5, residues 5-9 would be extracted.
Position 5: start = 5, end = 5 + 5 - 1 = 9