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COILS is a program that compares a sequence to a database of known parallel two-stranded coiled-coils and derives a similarity score. By comparing this score to the distribution of scores in globular and coiled-coil proteins, the program then calculates the probability that the sequence will adopt a coiled-coil conformation.
COILS was described in:

Lupas, A., Van Dyke, M., and Stock, J. (1991)
Predicting Coled Coils from Protein Sequences,
Science 252:1162-1164.

For further information see the updated COILS documentation. The program is also available by ftp

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Usage: Paste your sequence in one of the supported formats into the sequence field below
and press the "Run Coils" button.
Make sure that the format button (next to the sequence field) shows the correct format


You may change the options below:

Window width	all 14 21 28
matrix	MTIDK MTK 2.5fold weighting of positions a,d no yes
Query title (optional)
Input sequence format	Plain Text READSEQ convertible SwissProt ID or AC TrEMBL ID GenPept gi Yeast ORF
Query sequence: or ID or AC or GI (see above for valid formats)

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