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SHIFTOR is a program for predicting φ, ψ, χ1, and ω torsion angles in proteins  from 13C, 15N and 1H chemical shifts and sequential homology. For a test set of 31 proteins, SHIFTOR 30o-accuracy of predicting φ and ψ is close to 90%. The average χ1 accuracy is 81% while the ω accuracy is 99.98% for trans peptide bond identification and 93% for cis peptide bond identification. Overall, the program is 100X faster and its predictions are approximately 30% better than existing methods. You can find additional information about SHIFTOR protocol on SHIFTOR Help webpage.

Please Cite: Neal S, Berjanskii M, Zhang H, Wishart DS. Accurate prediction of protein torsion angles using chemical shifts and sequence homology. Magn Reson Chem. 2006 Jul;44 Spec No:S158-67.

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Use our new PREDITOR server to:
(1) get better shift-based predictions
(2) predict torsion angles from a sequence
(3) re-reference chemical shifts
(4) obtain results of subprograms (RCI, REFCOR and BLAST)
(5) generate XPLOR/CNS restraints
Select the format of input file:

BMRB NMR-STAR (Example) SHIFTY (Example)

Upload file with chemical shifts here:

 

OR

Paste chemical shifts into the text box below.
IMPORTANT: If a file is selected for upload above, it will be used and content of the text box below will be ignored.




Have a problem with SHIFTOR or a suggestion? Contact Steve Neal, Mark Berjanskii, or Canadian Bioinformatics Help Desk.

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