Items where Author is "Shamala, Narayanaswamy"

Basuroy, Krishnayan ; Kantharaju, Kamanna ; Aravinda, Subrayashastry ; Shamala, Narayanaswamy ; Balaram, Padmanabhan (2019) Pregabalin peptides: conformational comparison of γ3- and γ4-substituted γ-amino acids in αγααα pentapeptides Amino Acids, 51 (9). pp. 1297-1306. ISSN 0939-4451

Sonti, Rajesh ; Dinesh, Bhimareddy ; Basuroy, Krishnayan ; Raghothama, Srinivasarao ; Shamala, Narayanaswamy ; Balaram, Padmanabhan (2014) C12 Helices in Long Hybrid (αγ)n Peptides Composed Entirely of Unconstrained Residues with Proteinogenic Side Chains Organic Letters, 16 (6). pp. 1656-1659. ISSN 1523-7060

Sonti, Rajesh ; Dinesh, Bhimareddy ; Basuroy, Krishnayan ; Raghothama, Srinivasarao ; Shamala, Narayanaswamy ; Balaram, Padmanabhan (2014) C12 Helices in Long Hybrid (αγ)n Peptides Composed Entirely of Unconstrained Residues with Proteinogenic Side Chains Organic Letters, 16 (6). pp. 1656-1659. ISSN 1523-7060

Aravinda, Subrayashastry ; Raghavender, Upadhyayula S. ; Rai, Rajkishor ; Harini, Veldore V. ; Shamala, Narayanaswamy ; Balaram, Padmanabhan (2013) Analysis of designed β-hairpin peptides: molecular conformation and packing in crystals Organic and Biomolecular Chemistry, 11 (25). p. 4220. ISSN 1477-0520

Basuroy, Krishnayan ; Dinesh, Bhimareddy ; Reddy, M. B. Madhusudana ; Chandrappa, Siddapa ; Raghothama, Srinivasarao ; Shamala, Narayanaswamy ; Balaram, Padmanabhan (2013) Unconstrained Homooligomeric γ-Peptides Show High Propensity for C14 Helix Formation Organic Letters, 15 (18). pp. 4866-4869. ISSN 1523-7060

Dinesh, Bhimareddy ; Basuroy, Krishnayan ; Shamala, Narayanaswamy ; Balaram, Padmanabhan (2012) Structural characterization of folded pentapeptides containing centrally positioned β(R)Val, γ(R)Val and γ(S)Val residues Tetrahedron, 68 (23). pp. 4374-4380. ISSN 0040-4020

Aravinda, Subrayashastry ; Shamala, Narayanaswamy ; Karle, Isabella L. ; Balaram, Padmanabhan (2012) Characterization of bent helical conformations in polymorphic forms of a designed 18-residue peptide containing a central gly-pro segment Peptide Science, 98 (1). pp. 76-86.

Chandrappa, Siddappa ; Aravinda, Subrayashastry ; Raghothama, Srinivasarao ; Sonti, Rajesh ; Rai, Rajkishor ; Harini, Veldore V. ; Shamala, Narayanaswamy ; Balaram, Padmanabhan (2012) Helix and hairpin nucleation in short peptides using centrally positioned conformationally constrained dipeptide segments Organic and Biomolecular Chemistry, 10 . pp. 2815-2823. ISSN 1477-0520

Raghavender, Upadhyayula Surya ; Chatterjee, Bhaswati ; Saha, Indranil ; Rajagopal, Appavu ; Shamala, Narayanaswamy ; Balaram, Padmanabhan (2011) Entrapment of a water wire in a hydrophobic peptide channel with an aromatic lining Journal of Physical Chemistry B, 115 (29). pp. 9236-9243. ISSN 1089-5647

Vasudev, Prema G. ; Chatterjee, Sunanda ; Shamala, Narayanaswamy ; Balaram, Padmanabhan (2011) Structural chemistry of peptides containing backbone expanded amino acid residues: conformational features of β, γ, and hybrid peptides Chemical Reviews, 111 (2). pp. 657-687. ISSN 0009-2665

Rajagopal, Appavu ; Aravinda, Subrayashastry ; Raghothama, Srinivasarao ; Shamala, Narayanaswamy ; Balaram, Padmanabhan (2011) Chain length effects on helix-hairpin distribution in short peptides with Aib-DAla and Aib-Aib segments Peptide Science, 96 (6). pp. 744-756.

Kantharaju, ; Raghothama, Srinivasarao ; Aravinda, Subrayashastry ; Shamala, Narayanaswamy ; Balaram, Padmanabhan (2010) Helical conformations of hexapeptides containing N-terminus diproline segments Biopolymers: Peptide Science, 94 (3). pp. 360-370. ISSN 0006-3525

Raghavender, Upadhyayula Surya ; Aravinda, Subrayashastry ; Rai, Rajkishor ; Shamala, Narayanaswamy ; Balaram, Padmanabhan (2010) Peptide hairpin nucleation with the obligatory Type I' β-turn Aib-^DPro segment Organic and Biomolecular Chemistry, 8 (14). pp. 3133-3135. ISSN 1477-0520

Vasudev, Prema G. ; Aravinda, Subrayashastry ; Ananda, Kuppanna ; Veena, Shettykere Dayananda ; Nagarajan, Kuppuswamy ; Shamala, Narayanaswamy ; Balaram, Padmanabhan (2009) Crystal structures of a new polymorphic form of gabapentin monohydrate and the E and Z isomers of 4-tertiarybutylgabapentin Chemical Biology & Drug Design, 73 (1). pp. 83-96. ISSN 1397-002X

Raghavender, Upadhyayula S. ; Aravinda, Subrayashastry ; Shamala, Narayanaswamy ; Kantharaju, ; Rai, Rajkishor ; Balaram, Padmanabhan (2009) Characterization of water wires inside hydrophobic tubular peptide structures Journal of the American Chemical Society, 131 (42). pp. 15130-15132. ISSN 0002-7863

Vasudev, Prema G. ; Chatterjee, Sunanda ; Ramakrishnan, Chandrasekharan ; Shamala, Narayanaswamy ; Balaram, Padmanabhan (2009) Conformational choices for the stereochemically constrained γ-amino acid residue gabapentin: theoretical studies and correlation with experimental results Peptide Science, 92 (5). pp. 426-435.

Vasudev, Prema G. ; Chatterjee, Sunanda ; Ramakrishnan, Chandrasekharan ; Shamala, Narayanaswamy ; Balaram, Padmanabhan (2009) Conformational choices for the stereochemically constrained γ-amino acid residue gabapentin: theoretical studies and correlation with experimental results Peptide Science, 92 (5). pp. 426-435. ISSN 0006-3525

Kantharaju, ; Raghothama, Srinivasarao ; Raghavender, Upadhyayula Surya ; Aravinda, Subrayashastry ; Shamala, Narayanaswamy ; Balaram, Padmanabhan (2009) Conformations of heterochiral and homochiral proline-pseudoproline segments in peptides: context dependent cis-trans peptide bond isomerization Peptide Science, 92 (5). pp. 405-416.

Chatterjee, Sunanda ; Vasudev, Prema G. ; Raghothama, Srinivasarao ; Ramakrishnan, Chandrasekharan ; Shamala, Narayanaswamy ; Balaram, Padmanabhan (2009) Expanding the peptide β-turn in αγ hybrid sequences: 12 atom hydrogen bonded helical and hairpin turns Journal of the American Chemical Society, 131 (16). pp. 5956-5965. ISSN 0002-7863

Vasudev, Prema G. ; Chatterjee, Sunanda ; Shamala, Narayanaswamy ; Balaram, Padmanabhan (2009) Gabapentin: A stereochemically constrained γ amino acid residue in hybrid peptide design Accounts of Chemical Research, 42 (10). pp. 1628-1639. ISSN 0001-4842

Vasudev, Prema G. ; Chatterjee, Sunanda ; Ananda, Kuppanna ; Shamala, Narayanaswamy ; Balaram, Padmanabhan (2008) Hybrid αβ polypeptides: structural characterization of a C₁₂/C₁₀ helix with alternating hydrogen-bond polarity Angewandte Chemie International Edition, 47 (34). pp. 6430-6432. ISSN 1433-7851

Chatterjee, Bhaswati ; Saha, Indranil ; Raghothama, Srinivasarao ; Aravinda, Subrayashastry ; Rai, Rajkishor ; Shamala, Narayanaswamy ; Balaram, Padmanabhan (2008) Designed peptides with homochiral and heterochiral diproline templates as conformational constraints Chemistry: A European Journal, 14 (20). pp. 6192-6204. ISSN 0947-6539

Aravinda, Subrayashastry ; Shamala, Narayanaswamy ; Balaram, Padmanabhan (2008) Aib residues in peptaibiotics and synthetic sequences: Analysis of nonhelical conformations Chemistry and Biodiversity, 5 (7). pp. 1238-1262. ISSN 1612-1872

Hegde, Raghurama P. ; Aravinda, Subrayashastry ; Rai, Rajkishor ; Kaul, Ramesh ; Vijayalakshmi, Sarojini ; Rao, R. Balaji ; Shamala, Narayanaswamy ; Balaram, Padmanabhan (2008) Conformation of di-n-propylglycine residues (Dpg) in peptides: Crystal structures of a type I′β-turn forming tetrapeptide and an α-helical tetradecapeptide Journal of Peptide Science, 14 (5). pp. 648-659. ISSN 1075-2617

Vasudev, Prema G. ; Shamala, Narayanaswamy ; Balaram, Padmanabhan (2008) Nucleation, growth, and form in crystals of peptide helices Journal of Physical Chemistry, 112 (4). pp. 1308-1314. ISSN 0022-3654

Vasudev, Prema G. ; Rai, Rajkishor ; Shamala, Narayanaswamy ; Balaram, Padmanabhan (2008) Conformations of β-amino acid residues in peptides: X-ray diffraction studies of peptides containing the achiral residue 1-aminocyclohexaneacetic acid, β^3,3Ac₆c Biopolymers: Peptide Science, 90 (2). pp. 138-150. ISSN 0006-3525

Saha, Indranil ; Chatterjee, Bhaswati ; Shamala, Narayanaswamy ; Balaram, Padmanabhan (2008) Crystal structures of peptide enantiomers and racemates: probing conformational diversity in heterochiral Pro-Pro sequences Peptide Science, 90 (4). pp. 537-543.

Chatterjee, Sunanda ; Vasudev, Prema G. ; Ananda, Kuppanna ; Raghothama, Srinivasarao ; Shamala, Narayanaswamy ; Balaram, Padmanabhan (2008) Multiple conformational states in crystals and in solution in αγ hybrid peptides. Fragility of the c₁₂ helix in short sequences Journal of Organic Chemistry, 73 (17). pp. 6595-6606. ISSN 0022-3263

Chatterjee, Sunanda ; Vasudev, Prema G. ; Raghothama, Srinivasarao ; Shamala, Narayanaswamy ; Balaram, Padmanabhan (2008) Solid state and solution conformations of a hybrid αγααγα hexapeptide. Characterization of a backbone expanded analog of the α-polypeptide 3₁₀-helix Biopolymers: Peptide Science, 90 (6). pp. 759-771. ISSN 0006-3525

Rai, Rajkishor ; Vasudev, Prema G. ; Ananda, Kuppanna ; Raghothama, Srinivasarao ; Shamala, Narayanaswamy ; Karle, Isabella L. ; Balaram, Padmanabhan (2007) Hybrid peptides: Expanding the turn in peptide hairpins by the insertion of β-, γ-, and δ-residues Chemistry: A European Journal, 13 (20). pp. 5917-5926. ISSN 0947-6539

Vasudev, Prema G. ; Ananda, Kuppanna ; Chatterjee, Sunanda ; Aravinda, Subrayashastry ; Shamala, Narayanaswamy ; Balaram, Padmanabhan (2007) Hybrid peptide design. Hydrogen bonded conformations in peptides containing the stereochemically constrained γ-amino acid residue, gabapentin Journal of the American Chemical Society, 129 (13). pp. 4039-4048. ISSN 0002-7863

Mahalakshmi, Radhakrishnan ; Sengupta, Anindita ; Raghothama, Srinivasarao ; Shamala, Narayanaswamy ; Balaram, Padmanabhan (2007) Tryptophan rich peptides: Influence of indole rings on backbone conformation Biopolymers: Peptide Science, 88 (1). pp. 36-54. ISSN 0006-3525

Sengupta, Anindita ; Roy, Rituparna S. ; Sabareesh, Varatharajan ; Shamala, Narayanaswamy ; Balaram, Padmanabhan (2006) Aggregation modes in sheets formed by protected β-amino acids and β-peptides Organic and Biomolecular Chemistry, 4 (6). pp. 1166-1173. ISSN 1477-0520

Rai, Rajkishor ; Aravinda, Subrayashastry ; Kanagarajadurai, Karuppiah ; Raghothama, Srinivasarao ; Shamala, Narayanaswamy ; Balaram, Padmanabhan (2006) Diproline templates as folding nuclei in designed peptides. Conformational analysis of synthetic peptide helices containing amino terminal pro-pro segments Journal of the American Chemical Society, 128 (24). pp. 7916-7928. ISSN 0002-7863

Sengupta, Anindita ; Aravinda, Subrayashastry ; Shamala, Narayanaswamy ; Muruga Poopathi Raja, K. ; Balaram, Padmanabhan (2006) Structural studies of model peptides containing β-, γ and δ-amino acids Organic and Biomolecular Chemistry, 4 (22). pp. 4214-4222. ISSN 1477-0520

Vasudev, Prema G. ; Shamala, Narayanaswamy ; Ananda, Kuppanna ; Balaram, Padmanabhan (2005) C₉ helices and ribbons in γ-peptides: Crystal structures of gabapentin oligomers Angewandte Chemie International Edition, 44 (31). pp. 4972-4975. ISSN 1433-7851

Harini, Veldore Vidya ; Aravinda, Subrayashastry ; Rai, Rajkishor ; Shamala, Narayanaswamy ; Balaram, Padmanabhan (2005) Molecular conformation and packing of peptide hairpins in the solid state: Structures of two synthetic octapeptides containing 1-aminocycloalkane-1-carboxylic acid residues at the i+2 position of the βturn Chemistry: A European Journal, 11 (12). pp. 3609-3620. ISSN 0947-6539

Ananda, Kuppanna ; Vasudev, Prema G. ; Sengupta, Anindita ; Raja, K. Muruga Poopathi ; Shamala, Narayanaswamy ; Balaram, Padmanabhan (2005) Polypeptide helices in hybrid peptide sequences Journal of the American Chemical Society, 127 (47). pp. 16668-16674. ISSN 0002-7863

Aravinda, Subrayashastry ; Datta, Saumen ; Shamala, Narayanaswamy ; Balaram, Padmanabhan (2004) Hydrogen bond lengths in polypeptide helices: no evidence for short hydrogen bonds Angewandte Chemie, 116 (48). pp. 6896-6899. ISSN 0044-8249

Rahaman, Abdur ; Srinivasan, Naryanaswamy ; Shamala, Narayanaswamy ; Shaila, Melkote Subbarao (2004) Phosphoprotein of the rinderpest virus forms a tetramer through a coiled coil region important for biological function: a structural insight Journal of Biological Chemistry, 279 (22). pp. 23606-23614. ISSN 0021-9258

Aravinda, Subrayashastry ; Harini, Veldore Vidya ; Shamala, Narayanaswamy ; Das, Chittaranjan ; Balaram, Padmanabhan (2004) Structure and assembly of designed β-hairpin peptides in crystals as models for β-sheet aggregation Biochemistry, 43 (7). pp. 1832-1846. ISSN 0006-2960

Aravinda, Subrayashastry ; Ananda, Kuppanna ; Shamala, Narayanaswamy ; Balaram, Padmanabhan (2003) α-γ hybrid peptides that contain the conformationally constrained gabapentin residue: characterization of mimetics of chain reversals Chemistry: A European Journal, 9 (19). pp. 4789-4795. ISSN 0947-6539

Aravinda, Subrayashastry ; Shamala, Narayanaswamy ; Das, Chittaranjan ; Sriranjini, Arumugam ; Karle, Isabella L. ; Balaram, Padmanabhan (2003) Aromatic-aromatic interactions in crystal structures of helical peptide scaffolds containing projecting phenylalanine residues Journal of the American Chemical Society, 125 (18). pp. 5308-5315. ISSN 0002-7863

Aravinda, Subrayashastry ; Shamala, Narayanaswamy ; Bandyopadhyay, Abhishek ; Balaram, Padmanabhan (2003) Probing the role of the C-H···O hydrogen bond stabilized polypeptide chain reversal at the c-terminus of designed peptide helices. Structural characterization of three decapeptides Journal of the American Chemical Society, 125 (49). pp. 15065-15075. ISSN 0002-7863