Ranganathan, Darshan ; Karle, Isabella L. (1995) The delineation of hydrogen-bonding patterns in supramolecular self-assembly of several core oxalo retro-peptides and crystal structure of MeO-Ser-Leu-COCO-Leu-Ser-OMe International Journal of Peptide and Protein Research, 46 (1). pp. 18-23. ISSN 0367-8377
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Official URL: http://onlinelibrary.wiley.com/doi/10.1111/j.1399-...
Related URL: http://dx.doi.org/10.1111/j.1399-3011.1995.tb00577.x
Abstract
Pseudo-C5-type intramolecular hydrogen bonding, arising from the C2 disposition of the core NH-CO-CO-NH unit in oxalo retro-peptides, is formed in addition to extended hydrogen bonding with neighbors forming sheets in MeO-Aib-COCO-Aib-OMe (1), helices in MeO-Leu-COCO-Leu-OMe (2) and ribbons in MeO-Ser-Leu-COCO-Leu-Ser-OMe (3). In 3 the OH in the Ser side-chains form hydrogen bonds with the backbone carbonyl of Leu groups from neighboring molecules. Crystal parameters for 3 are: C22H38N4O10, monoclinic, space group P21, a = 7.374(1), b = 18.218(4), c = 10.661(3) Å, β = 95.72(2) °, R = 0.063 for 1738 observed reflections with ||Fo||> 3σ (F).
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to John Wiley and Sons, Inc. |
| Keywords: | C5-type Hydrogen Bonding; Hydrogen-bonded Sheets; Helices and Ribbons; X-ray Diffraction |
| ID Code: | 35650 |
| Deposited On: | 17 May 2011 10:04 |
| Last Modified: | 17 May 2011 10:04 |
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