From the Bax Group at the National Institutes of Health ...
TALOS-N Secondary Structure Prediction Server:
Specified for Amino Acid Sequence Based Secondary Structure Prediction
As described in the paper:
Protein backbone and sidechain torsion angles predicted from NMR chemical shifts using artificial neural networks.
Yang Shen, and Ad Bax.
J. Biomol. NMR, 56, 227-241(2013).
TALOS-N Software Web Site:
http://spin.niddk.nih.gov/bax/software/TALOS-N