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Karle, Isabella L and Flippen-Anderson, Judith L and Gurunath, R and Balaram, P (1994) Facile transition between 310- and alpha-helix: Structures of 8-, 9-, and 10-residue peptides containing the -(Leu-Aib-Ala)2-Phe-Aib- fragment. In: Protein Science, 3 (9). pp. 1547-1555.
Karle, Isabella L and Flippen-Anderson, Judith L and Agarwalla, S and Balaram, P (1994) Conformation of the flexible bent helix of Leu1-zervamicin in crystal C and a possible gating action for ion passage. In: Biopolymers, 34 (6). pp. 721-735.
Karle, Isabella L and Flippen-Anderson, Judith L and Uma, K and Balaram, P (1993) Unfolding of an alpha-Helix in Peptide Crystals by Solvation: Conformational Fragility in a Heptapeptide. In: Biopolymers, 33 (5). pp. 827-837.
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.
Karle, Isabella L and Flippen-Anderson, Judith L and Sukumar, M and Balaram, P (1992) Helix Packing of Leucine-Rich Peptides: A Parallel Leucine Ladder in the Structure of Boc- Aib-Leu- Aib- Aib-Leu-Leu-Leu- Aib-Leu- Aib-OMe. In: Proteins: Structure, Function, and Genetics, 12 (4). pp. 324-330.
Karle, Isabella L and Flippen-Anderson, Judith L and Agarwalla, Sanjay and Balaram, Padmanabhan (1991) Crystal structure of [Leu1]zervamicin, a membran ion-channel peptide: Implications for gating mechanisms. In: Proceedings of the National Academy of Sciences of the United States of America, 88 (12). pp. 5307-5311.
Isabella, L and Karle, IL and Flippen-Anderson, Judith L and Sukumar, M and Uma, K and Balaram, P (1991) Modular design of synthetic protein mimics. Crystal structure of two seven-residue helical peptide segments linked by .epsilon.-aminocaproic acid. In: Journal of the American Chemical Society, 113 (10). 3952 -3956.
Karle, Isabella L and Flippen-Anderson, Judith L and Uma, K and Balaram, P (1990) Helix Aggregation in Peptide Crystals: Occurrence of Either All Parallel or Antiparallel Packing Motifs for \alpha-Helices in Polymorphs of Boc-Aib-Ala-leu-Ala-leu-Aib-leu-Ala-leu-Aib-OMe. In: Biopolymers, 29 (14). pp. 1835-1845.
Karle, Isabella L and Flippen-Anderson, Judith L and Uma, Kuchibhotla and Balaram, Padmanabhan (1990) Parallel zippers formed by \alpha-helical peptide columns in crystals of Boc-Aib-Glu(OBzl)-Leu-Aib-Ala-Leu-Aib-Ala-Lys(Z)-Aib-OMe. In: Proceedings of the National Academy of Sciences of the United States of America, 87 (20). pp. 7921-7925.
Karle, Isabella L and Flippen-Anderson, Judith L and Uma, K and Balaram, Hemalatha and Balaram, P (1990) Peptide Design: Influence of a Guest Aib-Pro Segment on the Stereochemistry of an Oligo-Val Sequence-Solution Conformations and Crystal Structure of Boc-(Val)2-Aib-Pro-(Val)3-OMe. In: Biopolymers, 29 (10-11). pp. 1433-1442.
Karle, Isabella L and Flippen-Anderson, Judith L and Uma, K and Balaram, P (1990) Apolar Peptide Models for Conformational Heterogeneity, Hydration, and Packing of Polypeptide Helices: Crystal Structure of Hepta- and Octapeptides Containing \alpha-Aminoisobutyric Acid. In: Proteins: Structure, Function, and Genetics, 7 (1). pp. 62-73.
Karle, Isabella L and Flippen-Anderson, Judith L and Uma, K and Balaram, P (1990) Synthetic Peptide Helices in Crystals: Structure and Antiparallel and Skewed Packing Motifs for \alpha-Helices in Two Isomeric Decapeptides. In: Biopolymers, 30 (7-8). pp. 719-731.
Karle, Isabella L and Flippen-Anderson, Judith L and Uma, K and Balaram, P (1989) Modular Design of Synthetic Protein Mimics. Characterization of the Helical Conformation of a 13-Residue Peptide in Crystals. In: Biochemistry, 28 (16). pp. 6696-6701.
Karle, Isabella L and Flippen-Anderson, Judith L and Uma, Kuchibhotla and Balaram, Hemalatha and Balaram, Padmanabhan (1989) \alpha -Helix and Mixed $3_{10}$/ \alpha -helix in Cocrystallized Conformers of Boc-Aib-Val-Aib-Aib-Val-Val-Val-Aib-Val-Aib-Ome. In: Proceedings of the National Academy of Sciences of the United States of America, 86 (3). pp. 765-769.
Karle, Isabella L and Flippen-Anderson, Judith L and Sukumar, Mupalla and Balaram, Padmanabhan (1988) Monoclinic polymorph of Boc-Trp-Ile-Ala-Aib-Ile-Val-Aib-Leu-Aib-Pro-OMe(anhydrous). Parallel packing of 3(10)-/alpha-helices and a transition of helix type. In: International Journal of Peptide & Protein Research, 31 (6). pp. 567-576.
