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5-Membered NH...N hydrogen bonded molecular scaffold in a model dipeptide containing 3-aminophenylacetic acid: Crystal and solution conformations |
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| Authors: | Samir Kumar Maji D Velmurugan A Razak H K Fun and Arindam Banerjee |
| Institution: | (1) Department of Biological Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Calcutta, 700 032, India;(2) Department of Crystallography and Biophysics, University of Madras, Guindy Campus, Madras, 600 025, India;(3) X-ray Crystallography Unit, University Sains, Penang, Malaysia;(4) Department of Biological Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Calcutta, 700 032, India |
| Abstract: | Crystallographic and spectroscopic studies of a model dipeptidecontaining unusual amino acid residues establish the presence ofan intramolecular, 5-membered NH...N hydrogen bond involvingan amide NH (from 3-amino phenyl acetic acid residue) and anamide N atom from an adjacent amino acid residue in solid stateand in solution. The dipeptide also forms an infinite  -sheet ribbon structure in crystals. |
| Keywords: | Aib 3-aminophenylacetic acid NH N hydrogen bonding peptide |
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