Input file should be in the standard CIF file format (https://en.wikipedia.org/wiki/Crystallographic_Information_File).

The file can contain multiple models in the MODEL...ENDMDL blocks. Depending on the complexity of the structures, 10-15 models can be processed at once.

Input file should be in the standard PDB file format (http://www.wwpdb.org/documentation/file-format-content/format33/v3.3.html).

Up to 10 files in CIF, CIF.gz or PDB format can be uploaded at once. These can be different models of the same structure (as in this example) or any other set of structures.

For detailed information on other options, see Analyze your structure.

For detailed information on the resulting plots and topological fingerprints, see How to interpret lasso data.

Use the CTRL/CMD key to select multiple files.

Begin:
End:

Define first and last index of residue for loop closing. The list will automatically extend to accomodate more loops.

Define aminoacids forming a bridge by their three letter code (e.g. TYR and TRP).

Disulfide bridge length:
Min:
Max:
Amide bridge length:
Min:
Max:
Ester bridge length:
Min:
Max:
Thioester bridge length:
Min:
Max:
Smoothing iterations:
Search for identity in all AlphaLasso and AlphaFold models:
Stable lasso:
Minimal distance between crossings:

Default: 10

Minimal distance between crossing and tail end:

Default: 3

Minimal distance between crossing and loop:

Default: 3

How to cite

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