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Sequences A Sequences B
or upload file: or upload file:

Alignment parameters
 Logo Options
 Structure Options
Maximum number of iterations
 Consensus threshold
Specificity threshold
Logo height
Logo width
X-axis numbering
Small sample correction
 Include structural analysis
PDB ID
or upload own PDB file:
Query ID in alignment A
Chain in PDB file

Load example: Immunoglobulin kappa versus lambda
See examples of Spial output

Note: The sequences input is aligned using MUSCLE. Alternatively, alignments input can directly be submitted here.