Items where Author is "Uma, K."

Article

Paramasivam, M. ; Saravanan, K. ; Uma, K. ; Sharma, S. ; Singh, T. P. ; Srinivasan, A. (2002) Expression, purification, and characterization of equine lactoferrin in Pichia pastoris Protein Expression and Purification, 26 (1). pp. 28-34. ISSN 1046-5928

Konnert, J. ; Karle, J. ; Karle, I. L. ; Uma, K. ; Balaram, P. (1999) Isomorphous replacement combined with anomalous dispersion in the linear equations: application to a crystal containing four nonapeptide conformers Acta Crystallographica Section D, 55 (2). pp. 448-457. ISSN 0907-4449

Uma, K. ; Ramakrishna, K. R. ; Ananthakrishna, G. (1996) Image analysis using multifractals Proceedings - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing, 4 . pp. 2188-2190. ISSN 1520-6149

Karle, I. L. ; Flippen-Anderson, J. L. ; Uma, K. ; Balaram, P. (1996) Effects of end group and aggregation on helix conformation: Crystal structure of Ac-(Aib-Val-Ala-Leu)₂-Aib-OMe Journal of Peptide Science, 2 (2). pp. 106-116. ISSN 1075-2617

Karle, I. L. ; Flippen-Anderson, J. L. ; Uma, K. ; Balaram, P. (1994) Hydration and distortion of peptide helices in crystals. α-helical structure of a dodecapeptide, Boc-(Ala-Leu-Aib)4-OMe International Journal of Peptide & Protein Research, 44 (5). pp. 491-498. ISSN 0367-8377

Uma, K. ; Kishore, R. ; Balaram, P. (1993) Stereochemical constraints in peptide design: analysis of the influence of a disulfide bridge and an α-aminoisobutyryl residue on the conformation of a hexapeptide Biopolymers, 33 (6). pp. 865-871. ISSN 0006-3525

Karle, Isabella L. ; Flippen-Anderson, Judith L. ; Uma, K. ; Balaram, P. (1993) Unfolding of an α-helix in peptide crystals by solvation: conformational fragility in a heptapeptide Biopolymers, 33 (5). pp. 827-837. ISSN 0006-3525

Karle, I. L. ; Flippen-Anderson, J. L. ; Uma, K. ; Balaram, P. (1993) Accommodation of a D-Phe residue into a right-handed 310-helix: Structure of Boc-D-Phe-(Aib)4-Gly-L-Leu-(Aib)2-Ome, an analogue of the amino terminal segment of antiamoebins and emerimicins Biopolymers, 33 (3). pp. 401-407. ISSN 0006-3525

Karle, I. L. ; Flippen-Anderson, J. L. ; Uma, K. ; Balaram, P. (1993) Peptide mimics for structural features in proteins. Crystal structures of three heptapeptide helices with a C-terminal 6→1 hydrogen bond International Journal of Peptide & Protein Research, 42 . pp. 401-410. ISSN 0367-8377

Agarwalla, S. ; Mellor, I. R. ; Sansom, M. S. P. ; Karle, I. L. ; Flippen-Anderson, J. L. ; Uma, K. ; Krishna, K. ; Sukumar, M. ; Balaram, P. (1992) Zervamicins, a structurally characterised peptide model for membrane ion channels Biochemical and Biophysical Research Communications, 186 (1). pp. 8-15. ISSN 0006-291X

Valle, G. ; Bardi, R. ; Piazzesi, A. M. ; Crisma, M. ; Toniolo, C. ; Cavicchioni, G. ; Uma, K. ; Balaram, P. (1991) Crystal state conformation of three model monomer units for the β-bend ribbon structure Biopolymers, 31 (14). pp. 1669-1676. ISSN 0006-3525

Karle, Isabella L. ; Flippen-Anderson, Judith L. ; Sukumar, M. ; Uma, K. ; Balaram, P. (1991) Modular design of synthetic protein mimics. Crystal structure of two seven-residue helical peptide segments linked by .epsilon.-aminocaproic acid Journal of the American Chemical Society, 113 (10). pp. 3952-3956. ISSN 0002-7863

Karle, Isabella L. ; Flippen-Anderson, Judith L. ; Uma, K. ; Balaram, P. (1990) Helix aggregation in peptide crystals: occurrence of either all parallel or antiparallel packing motifs for α-helices in polymorphs of Boc-Aib-Ala-Leu-Ala-Leu-Aib-Leu-Ala-Leu-Aib-OMe Biopolymers, 29 (14). pp. 1835-1845. ISSN 0006-3525

Karle, I. L. ; Flippen-Anderson, J. L. ; Uma, K. ; Balaram, P. (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 Proceedings of the National Academy of Sciences of the United States of America, 87 (20). pp. 7921-7925. ISSN 0027-8424

Karle, I. L. ; Flippen-Anderson, J. L. ; Uma, K. ; Balaram, P. (1990) Helix construction using α-aminoisobutyryl residues in a modular approach to synthetic protein design. Conformational properties of an apolar decapeptide in two different crystal forms and in solution Current Science, 59 (17-18). pp. 875-885. ISSN 0011-3891

Karle, Isabella L. ; Flippen-Anderson, Judith L. ; Uma, K. ; Balaram, Hemalatha ; 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 Biopolymers, 29 (10-11). pp. 1433-1442. ISSN 0006-3525

Balaram, Hemalatha ; Uma, K. ; Balaram, P. (1990) Synthetic peptide models for protein secondary structures β-sheet formation in acyclic cystine peptides International Journal of Peptide and Protein Research, 35 (6). pp. 495-500. ISSN 0367-8377

Karle, Isabella L. ; Flippen-Anderson, Judith L. ; Uma, K. ; Balaram, P. (1990) Apolar peptide models for conformational heterogeneity, hydration, and packing of polypeptide helices: crystal structure of hepta- and octapeptides containing α-aminoisobutyric acid Proteins: Structure, Function, and Bioinformatics, 7 (1). pp. 62-73. ISSN 0887-3585

Karle, I. L. ; Flippen-Anderson, J. L. ; Uma, K. ; Balaram, P. (1990) Hydration of helix backbones of hydrophobic peptides Proceedings of the 11th American Peptide Symposium . pp. 544-547.

Karle, Isabella L. ; Flippen-Anderson, Judith L. ; Uma, K. ; Sukumar, M. ; Balaram, P. (1990) Modular design of synthetic protein mimics. Crystal structures, assembly, and hydration of two 15- and 16-residue apolar, leucyl-rich helical peptides Journal of the American Chemical Society, 112 (25). pp. 9350-9356. ISSN 0002-7863

Karle, Isabella L. ; Flippen-Anderson, Judith L. ; Uma, K. ; Balaram, P. (1990) Synthetic peptide helices in crystals: structure and antiparallel and skewed packing motifs for α-helices in two isomeric decapeptides Biopolymers, 30 (7-8). pp. 719-731. ISSN 0006-3525

Uma, K. ; Balaram, P. (1989) Peptide design: an analysis of studies using α-aminoisobutyric acid (Aib) and Z α β -dehydrophenylalanine (Δ^Z-Phe) Indian Journal of Chemistry - Section B: Organic and Medicinal Chemistry, 28 . pp. 705-710. ISSN 0376-4699

Uma, K. ; Balaram, P. ; Kaur, P. ; Sharma, Ashwani Kumar ; Chauhan, V. S. (1989) Conformations of peptides containing Z-α,β-dehydroleucine (Δ^ZLeu). A comparison of Boc-Pro-Δ^ZLeu-Gly-NHEt and Boc-Pro-Δ^ZPhe-Gly-NHEt International Journal of Biological Macromolecules, 11 (3). pp. 169-17. ISSN 0141-8130

Chauhan, V. S. ; Uma, K. ; Kaur, Paramjeet ; Balaram, P. (1989) Conformations of dehydrophenylalanine containing peptides: nmr studies of an acyclic hexapeptide with two Δ^z-Phe residues Biopolymers, 28 (3). pp. 763-771. ISSN 0006-3525

Karle, I. L. ; Flippen-Anderson, J. L. ; Uma, K. ; Balaram, P. (1989) Solvated helical backbones: X-ray diffraction study of Boc-Ala-Leu-Aib-Ala-Leu-Aib-OMe · H₂O Biopolymers, 28 (3). pp. 773-781. ISSN 0006-3525

Karle, I. L. ; Flippen-Anderson, J. L. ; Uma, K. ; Balaram, H. ; Balaram, P. (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 PNAS, 86 (3). pp. 765-769. ISSN 0027-8424.

Kaur, Paramjeet ; Uma, K. ; Balaram, P. ; Chauhan, V. S. (1989) Synthetic and conformational studies on dehydrophenylalanine containing model peptides International Journal of Peptide and Protein Research, 33 (2). pp. 103-109. ISSN 0367-8377

Karle, Isabella L. ; Flippen-Anderson, Judith L. ; Uma, K. ; Balaram, P. (1989) Modular design of synthetic protein mimics. characterization of the helical conformation of a 13-residue peptide in crystals Biochemistry, 26 (16). pp. 6696-6701. ISSN 0006-2960

Karle, Isabella L. ; Flippen-Anderson, Judith L. ; Uma, K. ; Balaram, P. (1988) Aggregation studies in crystals of apolar helical peptides: Boc-Aib-Val-Ala-Leu-Aib-Val-Ala-Leu-Aib-OMe International Journal of Peptide and Protein Research, 32 (6). pp. 536-543. ISSN 0367-8377

Chauhan, V. S. ; Uma, K. ; Kumar, Arun ; Balaram, P. (1988) Conformations of dehydrophenylalanine containing peptides nuclear overhauser effect study of two acyclic tetrapeptides International journal of peptide and protein research, 31 (4). pp. 349-358. ISSN 0367-8377

Uma, K. ; Balaram, H. ; Raghothama, S. ; Balaram, P. (1988) Simultaneous observation of positive and negative nuclear overhauser effects in oligopeptides due to segmental motion Biochemical and Biophysical Research Communications, 151 (1). pp. 153-157. ISSN 0006-291X

Karle, I. L. ; Flippen-Anderson, Judith ; Uma, K. ; Balaram, P. (1988) Aqueous channels within apolar peptide aggregates: solvated helix of the α-aminoisobutyric acid (Aib)-containing peptide Boc-(Aib-Ala-Leu)₃-Aib-OMe.2H₂O.CH₃OH in crystals Proceedings of the National Academy of Sciences of the United States of America, 85 (2). pp. 299-303. ISSN 0027-8424

Chauhan, V. S. ; Kaur, Paramjeet ; Sen, Nirupa ; Uma, K. ; Jacob, Jose ; Balaram, P. (1988) Conformational analysis of an active chemotactic peptide analog containing z-dehydrophbnylalanine at position 3 Tetrahedron, 44 (8). pp. 2359-2366. ISSN 0040-4020

Chauhan, V. S. ; Sharma, Ashwani K. ; Uma, K. ; Paul, P. K. C. ; Balaram, P. (1987) Conformations of dehydrophenylalanine containing peptides: NMR studies on three tripeptides with a central dehydrophenylalanyl residue International journal of peptide and protein research, 29 (1). pp. 126-133. ISSN 0367-8377