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Nucleic Acids Res. 2003 Jul 1;31(13):3833-5.

NORSp: Predictions of long regions without regular secondary structure.

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CUBIC, Department of Biochemistry and Molecular Biophysics, Columbia University, 650 West 168th Street BB217, New York, NY 10032, USA.


Many structurally flexible regions play important roles in biological processes. It has been shown that extended loopy regions are very abundant in the protein universe and that they have been conserved through evolution. Here, we present NORSp, a publicly available predictor for disordered regions in protein. Specifically, NORSp predicts long regions with NO Regular Secondary structure. Upon user submission of a protein sequence, NORSp will analyse the protein for its secondary structure, presence of transmembrane helices and coiled-coil. It will then return email to the user about the presence and position of disordered regions. NORSp can be accessed from

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