@article{open863,
          volume = {42},
          number = {28},
          author = {A K Thakur and Raghuvansh Kishore},
            note = {Copyright of this article belongs to Elsevier Science.},
           title = {Crystallographic characterisation of novel {\ensuremath{\beta}}-turn like folds in a model peptide: stabilisation by main-chain to side-chain interactions},
       publisher = {Elsevier Science},
            year = {2001},
         journal = {Tetrahedron Letters},
           pages = {4691--4694},
             url = {http://crdd.osdd.net/open/863/},
        abstract = {X-Ray diffraction analysis of the model peptide Boc-Thr-Thr-OCH3 reveals the existence of distinctive conformational characteristics: semi-extended ({\ensuremath{\phi}}=?62.1?; {\ensuremath{\psi}}=137.1?) and semi-folded ({\ensuremath{\phi}}=?130.3?; {\ensuremath{\psi}}T=5.7?) of the N- and C-terminus Thr residues, respectively. Surprisingly, an overall significantly ?flat? conformation is stabilised by a number of novel main-chain to side-chain intramolecular hydrogen bonds, i.e. two non-conventional: C{\ensuremath{\gamma}}i+1?H?O?Ci?1 and C{\ensuremath{\gamma}}i?H?Oi+1 types and two conventional: Ni?H?O{\ensuremath{\gamma}}i and O{\ensuremath{\gamma}}i?H?Ni types of interactions}
}