Component Explorer
Configure every SeqViz prop live — load any NCBI accession, tweak the controls, and copy the matching Python snippet.
Configure every SeqViz prop live — load any NCBI accession, tweak the controls, and copy the matching Python snippet.
This explorer mirrors the controls available in usage.py. All rendering happens client-side
using the seqviz library loaded from unpkg.
Requests go directly from your browser to NCBI's E-utilities API. dash-seqviz does not operate a proxy — your email is sent to NCBI along with each request, as recommended by their usage policy, so they can contact you if your usage causes issues.
Your email is stored locally in your browser only (localStorage). We cap you at 3 requests per second (NCBI's unauthenticated limit), cache responses so repeat accessions don't re-hit NCBI, and refuse obviously invalid accession strings.
For heavy or automated use, please get an NCBI API key and run your own workload — not through this public demo.
Live preview of the Python code behind what you see above. Copy + paste into a file, pip install dash-seqviz, and run.
pip install dash-seqvizconda install -c conda-forge dash-seqvizfrom dash import Dash, html
from dash_seqviz import SeqViz
app = Dash(__name__)
app.layout = html.Div([
SeqViz(
id="my-seqviz",
name="pUC19",
seq="TTGACGGCTAGCTCAGTCCTAGGTACAGTGCTAGC",
viewer="both",
annotations=[
{"start": 0, "end": 22, "name": "Promoter", "direction": 1, "color": "#2a9d8f"},
],
enzymes=["PstI", "EcoRI", "XbaI", "SpeI"],
style={"height": "500px", "width": "100%"},
)
])
if __name__ == "__main__":
app.run(debug=True)