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Karle, Isabella L and Flippen-Anderson, Judith L and Sukumar, Muppalla and Balaram, Padmanabhan (1992) Differences in hydration and association of helical Boc-Val-Ala-Leu-Aib-Val-Ala-Leu-(Val-Ala-Leu-Aib)2-OMe. xH2O in two crystalline polymorphs. In: Journal of Medical Chemistry, 35 (21). pp. 3885-3889.
Valle, Giovanni and Crisma, Marco and Toniolo, Claudio and Sen, Nirupa and Sukumar, Muppalla and Balaram, Padmanabhan (1988) Crystallographic characterization of the conformation of the 1-aminocyclohexane-1-carboxylic acid residue in simple derivatives and peptides. In: Journal of the Chemical Society, Perkin Transactions 2 (3). pp. 393-398.
Karle, Isabella L and Flippen-Anderson, Judith and Sukumar, Muppalla and Balaram, Padmanabhan (1987) Conformation of a 16-residue zervamicin IIA analog peptide containing three different structural features: $3_{10}$-helix, \alpha-helix, and \beta-bend ribbon. In: Proceedings of the National Academy of Sciences of the United States of America, 84 (15). pp. 5087-5091.
Karle, Isabella L and Sukumar, Muppalla and Balaram, Padmanabhan (1986) Parallel packing of \alpha-helices in crystals of the zervamicin IIA analog Boc-Trp-Ile-Ala-Aib-Ile-Val-Aib-Leu-Aib-Pro-OMe ${2H}_2O$. In: Proceedings of the National Academy of Sciences of the United States of America, 83 (24). pp. 9284-9288.
