Browse by Fellow

SivakamaSundari, Chandrasekaran ; Rukmani, Sridharan ; Ramakrishnan, Nagaraj (2012) Effect of introducing a short amyloidogenic sequence from the Aβ peptide at the N-terminus of 18-residue amphipathic helical peptides Journal of Peptide Science, 18 (2). pp. 122-128. ISSN 1075-2617

Pachahara, Sanjai Kumar ; Chaudhary, Nitin ; Subbalakshmi, Chilukuri ; Ramakrishnan, Nagaraj (2012) Hexafluoroisopropanol induces self-assembly of β-amyloid peptides into highly ordered nanostructures Journal of Peptide Science, 18 (4). pp. 233-241. ISSN 1075-2617

Sivakamasundari, C. ; Nandakumar, S. ; Nagaraj, R. (2011) Effect of replacing phenylalanine residues by para-substituted phenylalanines on the aggregation behavior of Aβ16-22 Protein and Peptide Letters . No pp. given.. ISSN 0929-8665

Chaudhary, Nitin ; Singh, Shashi ; Ramakrishnan, Nagaraj (2011) Aggregation properties of a short peptide that mediates amyloid fibril formation in model proteins unrelated to disease Journal of Biosciences, 36 (4). pp. 679-689. ISSN 0250-5991

Chaudhary, Nitin ; Ramakrishnan, Nagaraj (2011) Self-assembly of short amyloidogenic peptides at the air-water interface Journal of Colloid and Interface Science, 360 (1). pp. 139-147. ISSN 0021-9797

Chaudhary, Nitin ; Ramakrishnan, Nagaraj (2011) Impact on the replacement of Phe by Trp in a short fragment of Aβ amyloid peptide on the formation of fibrils Journal of Peptide Science, 17 (2). pp. 115-123. ISSN 1075-2617

Rawat, Anoop ; Nagaraj, Ramakrishnan (2010) Determinants of membrane association in the SH4 domain of Fyn: roles of N-terminus myristoylation and side-chain thioacylation Biochimica et Biophysica Acta: Biomembranes, 1798 (10). pp. 1854-1863. ISSN 0005-2736

Sivakama Sundari, C. ; Chakraborty, K. ; Nagaraj, R. ; Jagannadham, M. V. (2010) Characterization of chemical modification of tryptophan by matrix-assisted laser desorption/ionization mass spectrometry Protein and Peptide Letters, 17 (2). pp. 168-171. ISSN 0929-8665

Ambure, Sharadadevi ; Ramakrishnan, Nagaraj (2010) A molecular dynamics study of human defensins HBD-1 and HNP-3 in water Journal of Biomolecular Structure & Dynamics, 27 (4). pp. 541-550. ISSN 0739-1102

Chaudhary, Nitin ; Singh, Shashi ; Nagaraj, Ramakrishnan (2009) Morphology of self-assembled structures formed by short peptides from the amyloidogenic protein tau depends on the solvent in which the peptides are dissolved Journal of Peptide Science, 15 (10). pp. 675-684. ISSN 1075-2617

Sivakamasundari, Chandrasekaran ; Nagaraj, Ramakrishnan (2009) Interaction of 18-residue peptides derived from amphipathic helical segments of globular proteins with model membranes Journal of Biosciences, 34 (2). pp. 239-250. ISSN 0250-5991

Nagaraj, Ramakrishnan (2009) Peptides: isolation, production, and use in India Biotechnology Journal, 4 (3). pp. 329-334. ISSN 1860-6768

Krishnakumari, Viswanatha ; Rangaraj, Nandini ; Nagaraj, Ramakrishnan (2009) Antifungal activities of human beta-defensins HBD-1 to HBD-3 and their C-terminal analogs Phd1 to Phd3 Antimicrobial Agents and Chemotherapy, 53 (1). pp. 256-260. ISSN 0066-4804

Chaudhary, Nitin ; Nagaraj, Ramakrishnan (2009) Hen lysozyme amyloid fibrils induce aggregation of erythrocytes and lipid vesicles Molecular and Cellular Biochemistry, 328 (1-2). pp. 209-215. ISSN 0300-8177

Karle, Isabella L. ; Ranganathan, Darshan ; Kumar, Mittapalli Gopi ; Nagaraj, Ramakrishnan (2008) Design, synthesis, conformational and membrane ion transport studies of proline-adamantane hybrid cyclic depsipeptides Biopolymers, 89 (5). pp. 471-478. ISSN 0006-3525

Krishnakumari, Viswanatha ; Nagaraj, Ramakrishnan (2008) Interaction of antibacterial peptides spanning the carboxy-terminal region of human ß-defensins 1-3 with phospholipids at the air-water interface and inner membrane of E. coli Peptides, 29 (1). pp. 7-14. ISSN 0196-9781

Jagannadham, Medicharla V. ; Ramakrishnan, Nagaraj (2008) Detecting the site of phosphorylation in phosphopeptides without loss of phosphate group using MALDI TOF mass spectrometry Analytical Chemistry Insights, 3 . pp. 21-29. ISSN 1177-3901

Chaudhary, Nitin ; Singh, Shashi ; Nagaraj, Ramakrishnan (2008) Organic solvent mediated self-association of an amyloid forming peptide from β₂-microglobulin: an atomic force microscopy study Journal of Peptide Science, 90 (6). pp. 783-791. ISSN 1075-2617

Chakraborty, Tushar Kanti ; Koley, Dipankar ; Ravi, Rapolu ; Krishnakumari, Viswanatha ; Nagaraj, Ramakrishnan ; Kunwar, Ajit Chand (2008) Synthesis, conformational analysis and biological studies of cyclic cationic antimicrobial peptides containing sugar amino acids Journal of Organic Chemistry, 73 (22). pp. 8731-8744. ISSN 0022-3263

Karle, Isabella L. ; Venkateshwarlu, Punna ; Nagaraj, Ramakrishnan ; Sarma, Akella V. S. ; Vijay, Dolly ; Sastry, Narahari G. ; Ranganathan, Subramania (2007) Diphenic acid as a general conformational lock in the design of bihelical structures Chemistry: A European Journal, 13 (15). pp. 4253-4263. ISSN 0947-6539

Krishnakumaria, Viswanatha ; Singh, Shashi ; Nagaraj, Ramakrishnan (2006) Antibacterial activities of synthetic peptides corresponding to the carboxy-terminal region of human β-defensins 1-3 Peptides, 27 (11). pp. 2607-2613. ISSN 0196-9781

Varkey, Jobin ; Singh, Shashi ; Nagaraj, Ramakrishnan (2006) Antibacterial activity of linear peptides spanning the carboxy-terminal β-sheet domain of arthropod defensins Peptides, 27 (11). pp. 2614-2623. ISSN 0196-9781

Sowmya, Bekshe L. ; Jagannadham, M. V. ; Nagaraj, Ramakrishnan (2006) Interaction of synthetic peptides corresponding to the scaffolding domain of Caveolin-3 with model membranes Journal of Peptide Science, 84 (6). pp. 615-624. ISSN 1075-2617

Varkey, Jobin ; Nagaraj, Ramakrishnan (2005) Antibacterial activity of human neutrophil defensin HNP-1 analogs without cysteines Antimicrobial Agents and Chemotherapy, 49 (11). pp. 4561-4566. ISSN 0066-4804

Jagannadham, M. V. ; Nagaraj, R. (2005) Detection of peptides covalently modified with multiple fatty acids by MALDI-TOF mass spectrometry The Journal of Peptide Research, 66 (2). pp. 94-100. ISSN 1397-002X

Harishchandran, Avaronnan ; Nagaraj, Ramakrishnan (2005) Interaction of a pseudosubstrate peptide of protein kinase C and its myristoylated form with lipid vesicles: only the myristoylated form translocates into the lipid bilayer Biochimica et Biophysica Acta: Biomembranes, 1713 (2). pp. 73-82. ISSN 0005-2736

Sharadadevi, Ambure ; Sivakamasundari, Chandrasekaran ; Nagaraj, Ramakrishnan (2005) Amphipathic α-helices in proteins: results from analysis of protein structures Proteins: Structure, Function, and Bioinformatics, 59 (4). pp. 791-801. ISSN 0887-3585

Dhople, Vishnu M. ; Nagaraj, Ramakrishnan (2005) Conformation and activity of δ-lysin and its analogs Peptides, 26 (2). pp. 217-225. ISSN 0196-9781

Jagannadham, M. V. ; Nagaraj, Ramakrishnan (2005) Conformation of gramicidin a in water: inference from analysis of hydrogen/deuterium exchange behavior by matrix assisted laser desorption ionization mass spectrometry Journal of Peptide Science, 80 (5). pp. 708-713. ISSN 1075-2617

Kamalakkannan, S. ; Murugan, V. ; Jagannadham, M. V. ; Nagaraj, Ramakrishnan ; Sankaran, K. (2004) Bacterial lipid modification of proteins for novel protein engineering applications Protein Engineering Design & Selection, 17 (10). pp. 721-729. ISSN 1741-0126

Sitaram, Narasimhaiah ; Subbalakshmi, Chilukuri ; Nagaraj, Ramakrishnan (2003) Indolicidin, a 13-residue basic antimicrobial peptide rich in tryptophan and proline, interacts with Ca²⁺-calmodulin Biochemical and Biophysical Research Communications, 309 (4). pp. 879-884. ISSN 0006-291X

Krishnakumari, Viswanatha ; Sharadadevi, Ambure ; Singh, Shashi ; Nagaraj, Ramakrishnan (2003) Single disulfide and linear analogues corresponding to the carboxy-terminal segment of bovine β-defensin-2: effects of introducing the β-hairpin nucleating sequence D-pro-gly on antibacterial activity and biophysical properties Biochemistry, 42 (31). pp. 9307-9315. ISSN 0006-2960

Chakraborty, T. K. ; Srinivasu, P. ; Bikshapathy, E. ; Nagaraj, R. ; Vairamani, M. ; Kiran Kumar, S. ; Kunwar, A. C. (2003) Cyclic homooligomers of furanoid sugar amino acids Journal of Organic Chemistry, 68 (16). pp. 6257-6263. ISSN 0022-3263

Pallavi, Bhattaram ; Nagaraj, Ramakrishnan (2003) Palmitoylated peptides from the cysteine-rich domain of SNAP-23 cause membrane fusion depending on peptide length, position of cysteines, and extent of palmitoylation Journal of Biological Chemistry, 278 (15). pp. 12737-12744. ISSN 0021-9258

Bera, Ananya ; Singh, Shashi ; Nagaraj, Ramakrishnan ; Vaidya, Tushar (2003) Induction of autophagic cell death in Leishmania donovani by antimicrobial peptides Molecular and Biochemical Parasitology, 127 (1). pp. 23-35. ISSN 0166-6851

Jagannadham, M. V. ; Sharadadevi, A. ; Nagaraj, R. (2002) Effects of deleting a tripeptide sequence observed in muscular dystrophy patients on the conformation of synthetic peptides corresponding to the scaffolding domain of caveolin-3 Biochemical and Biophysical Research Communications, 298 (2). pp. 203-206. ISSN 0006-291X

Sitaram, N. ; Nagaraj, R. (2002) Antimicrobial peptides as novel therapeutic agents to combat drug-resistant microbial infections Current Medicinal Chemistry - Anti-Infective Agents, 1 (4). pp. 413-430. ISSN 1568-0126

John, George Babu ; Anjum, Rana ; Khar, Ashok ; Nagaraj, Ramakrishnan (2002) Subcellular localization and physiological consequences of introducing a mitochondrial matrix targeting signal sequence in bax and its mutants Experimental Cell Research, 278 (2). pp. 198-208. ISSN 0014-4827

Ranganathan, Darshan ; Samant, Manoj P. ; Nagaraj, Ramakrishnan ; Bikshapathy, E. (2002) Design, synthesis and membrane ion transport properties of cystine- and serine-based cyclo-4-oxa-heptane-1,7-bisamides Tetrahedron Letters, 43 (29). pp. 5145-5147. ISSN 0040-4039

Sitaram, Narasimhaiah ; Sai, Korrapati Purna ; Singh, Shashi ; Sankaran, Krishnan ; Nagaraj, Ramakrishnan (2002) Structure-function relationship studies on the frog skin antimicrobial peptide tigerinin 1: design of analogs with improved activity and their action on clinical bacterial isolates Antimicrobial Agents and Chemotherapy, 46 (7). pp. 2279-2283. ISSN 0066-4804

Sitaram, N. ; Nagaraj, R. (2002) The therapeutic potential of host-defense antimicrobial peptides Current Drug Targets, 3 (3). pp. 259-267. ISSN 1389-4501

Avaronnan, Harishchandran ; Bhattaram, Pallavi ; Ramakrishnan, Nagaraj (2002) A synthetic strategy for on-resin amino acid specific multiple fatty acid acylation of peptides Protein and Peptide Letters, 9 (5). pp. 411-417. ISSN 0929-8665

Narasimhaiah, Sitaram ; Ramakrishnan, Nagaraj (2002) Host-defense antimicrobial peptides: importance of structure for activity Current Pharmaceutical Design, 8 (9). pp. 727-742. ISSN 1381-6128

Sarma, A. V. S. ; Ramana Rao, M. H. V. ; Sarma, J. A. R. P. ; Nagaraj, R. ; Dutta, A. S. ; Kunwar, A. C. (2002) NMR study of cyclic peptides with renin inhibitor activity Journal of Biochemical and Biophysical Methods, 51 (1). pp. 27-45. ISSN 0165-022X

Mandal, M. ; Jagannadham, M. V. ; Nagaraj, R. (2002) Antibacterial activities and conformations of bovine β-defensin BNBD-12 and analogs: structural and disulfide bridge requirements for activity Peptides, 23 (3). pp. 413-418. ISSN 0196-9781

Mandal, M. ; Nagaraj, R. (2002) Antibacterial activities and conformations of synthetic α-defensin HNP-1 and analogs with one, two and three disulfide bridges The Journal of Peptide Research, 59 (3). pp. 95-104. ISSN 1397-002X

Kumari, V. K. ; Nagaraj, R. (2001) Structure-function studies on the amphibian peptide brevinin 1E: translocating the cationic segment from the C-terminal end to a central position favors selective antibacterial activity The Journal of Peptide Research, 58 (5). pp. 433-441. ISSN 1397-002X

Chakraborty, Tushar K. ; Ghosh, Animesh ; Nagaraj, R. ; Ravi Sankar, A. ; Kunwar, Ajit C. (2001) Synthesis and conformational studies of peptidomimetics containing a carbocyclic 1,3-diacid Tetrahedron, 57 (44). pp. 9169-9175. ISSN 0040-4020

Thennarasu, S. ; Nagaraj, R. (2001) Effects of salt and denaturant on structure of the amino terminal alpha-helical segment of an antibacterial peptide dermaseptin and its binding to model membranes Indian Journal of Biochemistry & Biophysics, 38 (3). pp. 142-148. ISSN 0301-1208

Sai, Korrapati Purna ; Jagannadham, Medicharla Venkata ; Vairamani, Mariappanadar ; Raju, Namburi Prasada ; Devi, Ambure Sharada ; Nagaraj, Ramakrishnan ; Sitaram, Narasimhaiah (2001) Tigerinins: novel antimicrobial peptides from the Indian frog Rana tigerina Journal of Biological Chemistry, 276 (4). pp. 2701-2707. ISSN 0021-9258

Subbalakshmi, C. ; Nagaraj, R. ; Sitaram, N. (2001) Biological activities of retro and diastereo analogs of a 13-residue peptide with antimicrobial and hemolytic activities The Journal of Peptide Research, 57 (1). pp. 59-67. ISSN 1397-002X

Chakraborty, T. K. ; Jayaprakash, S. ; Srinivasu, P. ; Govardhana Chary, M. ; Diwan, P. V. ; Nagaraj, R. ; Ravi Sankar, A. ; Kunwar, A. C. (2000) Synthesis and structural studies of oligomers of 6-amino-2,5-anhydro-6-deoxy-D-mannonic acid Tetrahedron Letters, 41 (42). pp. 8167-8171. ISSN 0040-4039

Chakraborty, T. K. ; Ghosh, S. ; Jayaprakash, S. ; Sharma, J. A. R. P. ; Ravikanth, V. ; Diwan, P. V. ; Nagaraj, R. ; Kunwar, A. C. (2000) Synthesis and conformational studies of peptidomimetics containing furanoid sugar amino acids and a sugar diacid Journal of Organic Chemistry, 65 (20). pp. 6441-6457. ISSN 0022-3263

Subbalakshmi, C. ; Bikshapathy, E. ; Sitaram, N. ; Nagaraj, R. (2000) Antibacterial and hemolytic activities of single tryptophan analogs of indolicidin Biochemical and Biophysical Research Communications, 274 (3). pp. 714-716. ISSN 0006-291X

Ranganathan, Darshan ; Haridas, V. ; Nagaraj, R. ; Karle, Isabella L. (2000) Double-helical cyclic peptides: design, synthesis, and crystal structure of figure-eight mirror-image conformers of adamantane-constrained cystine-containing cyclic peptide cyclo (Adm-Cyst)₃ Journal of Organic Chemistry, 65 (14). pp. 4415-4422. ISSN 0022-3263

Arunan, C. ; Nagaraj, R. ; Rajasekharan Pillai, V. N. (2000) Solid-phase synthesis of a modified 13-residue seminalplasmin fragment on 1,6-hexanediol diacrylate-crosslinked polystyrene support Peptides, 21 (6). pp. 773-777. ISSN 0196-9781

Ranganathan, Darshan ; Haridas, V. ; Kurur, Sunita ; Nagaraj, R. ; Bikshapathy, E. ; Kunwar, A. C. ; Sarma, A. V. S. ; Vairamani, M. (2000) Norbornene-constrained cyclic peptides with hairpin architecture: design, synthesis, conformation, and membrane ion transport Journal of Organic Chemistry, 65 (2). pp. 365-374. ISSN 0022-3263

Sitaram, Narasimhaiah ; Nagaraj, Ramakrishnan (1999) Interaction of antimicrobial peptides with biological and model membranes: structural and charge requirements for activity Biochimica et Biophysica Acta: Biomembranes, 1462 (1-2). pp. 29-54. ISSN 0005-2736

Jagannadham, M. V. ; Krishnamurthy, A. S. ; Husain, S. ; Nagaraj, R. (1999) Conformations of hydrophobic peptides in trifluoroethanol, water and in solid state: a circular dichroism and Fourier Transform Infrared study Indian Journal of Biochemistry & Biophysics, 36 (6). pp. 422-428. ISSN 0301-1208

Krishnakumari, V. ; Sharadadevi, A. ; Sitaram, N. ; Nagaraj, R. (1999) Consequences of introducing a disulfide bond into an antibacterial and hemolytic peptide The Journal of Peptide Research, 54 (6). pp. 528-535. ISSN 1397-002X

Subbalakshmi, C. ; Nagaraj, R. ; Sitaram, N. (1999) Biological activities of C-terminal 15-residue synthetic fragment of melittin: design of an analog with improved antibacterial activity FEBS Letters, 448 (1). pp. 62-66. ISSN 0014-5793

Thennarasu, S. ; Nagaraj, R. (1999) Synthetic peptides corresponding to the β-hairpin loop of rabbit defensin NP-2 show antimicrobial activity Biochemical and Biophysical Research Communications, 254 (2). pp. 281-283. ISSN 0006-291X

Bikshapathy, E. ; Sitaram, N. ; Nagaraj, R. (1999) Addition and omission analogs of the 13-residue antibacterial and hemolytic peptide PKLLKTFLSKWIG: structural preferences, model membrane binding and biological activities The Journal of Peptide Research, 53 (1). pp. 47-55. ISSN 1397-002X

Chakraborty, T. K. ; Jayaprakash, S. ; Diwan, P. V. ; Nagaraj, R. ; Jampani, S. R. B. ; Kunwar, A. C. (1998) Folded conformation in peptides containing furanoid sugar amino acids Journal of the American Chemical Society, 120 (49). pp. 12962-12963. ISSN 0002-7863

Ranganathan, Darshan ; Haridas, V. ; Kurur, Sunita ; Thomas, Achamma ; Madhusudanan, K. P. ; Nagaraj, R. ; Kunwar, A. C. ; Sarma, A. V. S. ; Karle, Isabella L. (1998) Demonstration of endo-cis-(2S,3R)-bicyclo[2.2.1]hept-5-en-2,3- dicarbonyl unit as a reverse-turn scaffold and nucleator of two-stranded parallel β-sheets: design, synthesis, crystal structure, and self-assembling properties of norborneno peptide analogues Journal of the American Chemical Society, 120 (33). pp. 8448-8460. ISSN 0002-7863

Nagaraj, R. ; Subbalakshmi, C. ; Krishnakumari, V. ; Sitaram, N. (1998) Interaction of indolicidin, a 13-residue peptide rich in tryptophan and proline and its analogues with model membranes Journal of Biosciences, 23 (1). pp. 9-13. ISSN 0250-5991

Joseph, M. ; Nagaraj, R. (1998) Insight into the environment of tryptophan in a hydrophobic model peptide upon aggregation and interaction with lipid vesicles: a steady state and time resolved fluorescence study Indian Journal of Biochemistry & Biophysics, 35 (2). pp. 67-75. ISSN 0301-1208

Devi, A. S. ; Sitaram, N. ; Nagaraj, R. (1998) Structural features of helical aggregates of antibacterial peptides via simulated annealing and molecular modeling Journal of Biomolecular Structure & Dynamics, 15 (4). pp. 653-661. ISSN 0739-1102

Ranganathan, Darshan ; Haridas, V. ; Madhusudanan, K. P. ; Roy, Raja ; Nagaraj, R. ; John, G. B. (1997) Serine-based cyclodepsipeptides on an adamantane building block: design, synthesis, and characterization of a novel family of macrocyclic membrane ion-transporting depsipeptides Journal of the American Chemical Society, 119 (48). pp. 11578-11584. ISSN 0002-7863

Bikshapathy, E ; Nagaraj, R. (1997) Manual solid-phase syntheses of peptides on resins with high loading capacity requiring small volumes of solvents Proceedings of the Indian Academy of Sciences - Chemical Sciences, 109 (5). pp. 319-323. ISSN 0253-4134

Krishnakumari, V. ; Nagaraj, R. (1997) Antimicrobial and hemolytic activities of crabrolin, a 13-residue peptide from the venom of the European hornet, Vespa crabro, and its analogs The Journal of Peptide Research, 50 (2). pp. 88-93. ISSN 1397-002X

Nagaraj, R. (1997) Structure-function relationships and engineering of host-defense peptides Current Science, 72 (11). pp. 819-825. ISSN 0011-3891

Joseph, M. ; Nagaraj, R. (1997) Is the role of fatty acids only to provide membrane-anchor in fatty acylated proteins? Indian Journal of Biochemistry & Biophysics, 34 (1-2). pp. 1-5. ISSN 0301-1208

Sitaram, Narasimhaiah ; Subbalakshmi, Chilukuri ; Krishnakumari, Viswanath ; Nagaraj, Ramakrishnan (1997) Identification of the region that plays an important role in determining antibacterial activity of bovine seminalplasmin FEBS Letters, 400 (3). pp. 289-292. ISSN 0014-5793

Khemani, Vinisha S. ; Nagaraj, Ramakrishnan (1996) Competition studies of bovine liver catalase, synthetic peptides and artificial conjugates for luciferase import in a semipermeabilized cell system Annals of the New York Academy of Sciences, 804 (1). pp. 701-705. ISSN 0077-8923

Subbalakshmi, C. ; Krishnakumari, V. ; Nagaraj, R. ; Sitaram, N. (1996) Requirements for antibacterial and hemolytic activities in the bovine neutrophil derived 13-residue peptide indolicidin FEBS Letters, 395 (1). pp. 48-52. ISSN 0014-5793

Joseph, M. ; Nagaraj, R. (1996) Acylation of proteins: recent advances Indian Journal of Biochemistry & Biophysics, 33 (5). pp. 343-348. ISSN 0301-1208

Ranganathan, Subramania ; Kundu, Dinabandhu ; Tamilarasu, Natarajan ; Nagaraj, Ramakrishnan ; Dhople, Vishnu M. ; Jaganadham, Medicharala V. (1996) The gramicidin pore: selective tryptophan replacement with aspartic acid Tetrahedron Letters, 37 (29). pp. 5199-5202. ISSN 0040-4039

Ranganathan, Darshan ; Haridas, V. ; Madhusudanan, K. P. ; Roy, Raja ; Nagaraj, R. ; John, G. B. ; Sukhaswami, M. B. (1996) Design, synthesis, and ion-transport properties of a novel family of cyclic, adamantane-containing cystine peptides Angewandte Chemie International Edition, 35 (10). pp. 1105-1107. ISSN 1433-7851

Thennarasu, S. ; Nagaraj, R. (1996) Specific antimicrobial and hemolytic activities of 18-residue peptides derived from the amino terminal region of the toxin pardaxin Protein Engineering, 9 (12). pp. 1219-1224. ISSN 0269-2139

Thennarasu, Sathiah ; Nagaraj, Ramakrishnan (1995) Design of 16-residue peptides possessing antimicrobial and hemolytic activities or only antimicrobial activity from an inactive peptide International Journal of Peptide and Protein Research, 46 (6). pp. 480-486. ISSN 0367-8377

Joseph, Mercy ; Nagaraj, Ramakrishnan (1995) Conformations of peptides corresponding to fatty acylation sites in proteins a circular dichroism study Journal of Biological Chemistry, 270 (33). pp. 19439-19445. ISSN 0021-9258

Sitaram, Narasimhaiah ; Subbalakshmi, Chilukcuri ; Nagaraj, Ramakrishnan (1995) Structural and charge requirements for antimicrobial and hemolytic activity in the peptide PKLLETFLSKWIG, corresponding to the hydrophobic region of the antimicrobial protein bovine seminalplasmin International Journal of Peptide and Protein Research, 46 (2). pp. 166-173. ISSN 0367-8377

Mercy, Joseph ; Ramakrishnan, Nagaraj (1995) Interaction of peptides corresponding to fatty acylation sites in proteins with model membranes Journal of Biological Chemistry, 270 (28). pp. 16749-16755. ISSN 0021-9258

Sitaram, N. ; Nagaraj, R. (1995) Seminalplasmin Bioessays, 17 (5). pp. 415-422. ISSN 0265-9247

Dhople, V. M. ; Nagaraj, R. (1995) Generation of analogs having potent antimicrobial and hemolytic activities with minimal changes from an inactive 16-residue peptide corresponding to the helical region of Staphylococcus aureus δ-toxin Protein Engineering, 8 (3). pp. 315-318. ISSN 0269-2139

Singh, L. ; Wadhwa, R. ; Naidu, S. ; Nagaraj, R. ; Ganesan, M. (1994) Sex- and tissue-specific Bkm(GATA)-binding protein in the germ cells of heterogametic sex Journal of Biological Chemistry, 269 (41). pp. 25321-25327. ISSN 0021-9258

Saberwal, G. ; Thennarasu, S. ; Dhople, V. M. ; Jagannadham, M. V. ; Nagaraj, R. (1994) Studies on the synthesis of the toxins, pardaxin, δ-toxin and their analogues by solid-phase methods Proceedings of the Indian Academy of Sciences - Chemical Sciences, 106 (5). pp. 1109-1121. ISSN 0253-4134

Saberwal, Gayatri ; Nagaraj, Ramakrishnan (1994) Cell-lytic and antibacterial peptides that act by perturbing the barrier function of membranes: facets of their conformational features, structure-function correlations and membrane-perturbing abilities Biochimica et Biophysica Acta: Reviews on Biomembranes, 1197 (2). pp. 109-131. ISSN 0304-4157

Renil, M. ; Nagaraj, R. ; Rajasekharan Pillai, V. N. (1994) Gel-phase peptide synthesis on a new high-capacity tetraethyleneglycol diacrylate-crosslinked polystyrene support: synthesis of pardaxin 16-33 Tetrahedron, 50 (22). pp. 6681-6688. ISSN 0040-4020

Saberwal, Gayatri ; Nagaraj, Ramakrishnan (1993) Interaction of hydrophobic peptides with model membranes: slow binding to membranes and not subtle variations in pore structure is responsible for the gradual release of entrapped solutes Biochimica et Biophysica Acta: Biomembranes, 1151 (1). pp. 43-50. ISSN 0005-2736

Sitaram, N. ; Subbalakshmi, C. ; Nagaraj, R. (1993) Identification of a second membrane-active 13-residue peptide segment in the antimicrobial protein, bovine seminalplasmin FEBS Letters, 328 (3). pp. 239-242. ISSN 0014-5793

Saberwal, G. ; Nagaraj, R. (1993) Conformations of peptide fragments comprising the amino-terminal, central, and carboxyl-terminal regions of a membrane-active polypeptide. Build-up of secondary structure in pardaxin Journal of Biological Chemistry, 268 (19). pp. 14081-14089. ISSN 0021-9258

Rao, N. M. ; Nagaraj, R. (1993) Interaction of wild-type signal sequences and their charged variants with model and natural membranes Biochemical Journal, 293 (pt1). pp. 43-49. ISSN 0264-6021

Nagaraj, Ramakrishnan ; Joseph, Mercy (1993) A convenient method for the synthesis of peptides acylated with palmitic acid specifically at cysteine thiol Bioorganic & Medicinal Chemistry Letters, 3 (6). pp. 1025-1028. ISSN 0960-894X

Sitaram, Narasimhaiah ; Nagaraj, Ramakrishnan (1993) Interaction of the 47-residue antibacterial peptide seminalplasmin and its 13-residue fragment which has antibacterial and hemolytic activities with model membranes Biochemistry, 32 (12). pp. 3124-3130. ISSN 0006-2960

Dhople, Vishnu Mukund ; Nagaraj, Ramakrishnan (1993) δ-toxin, unlike melittin, has only hemolytic activity and no antimicrobial activity: rationalization of this specific biological activity Bioscience Reports, 13 (4). pp. 245-250. ISSN 0144-8463

Sitaram, N. ; Chandy, M. ; Pillai, V. N. ; Nagaraj, R. (1992) Change of glutamic acid to lysine in a 13-residue antibacterial and hemolytic peptide results in enhanced antibacterial activity without increase in hemolytic activity Antimicrobial Agents and Chemotherapy, 36 (11). pp. 2468-2472. ISSN 0066-4804

Sitaram, N. ; Krishnakumari, V. ; Nagaraj, R. (1992) The antibacterial peptide seminal plasmin alters permeability of the inner membrane of E. coli FEBS Letters, 303 (2-3). pp. 265-268. ISSN 0014-5793

Joseph, M. ; Nagaraj, R. (1992) The possible role of fatty acylation in proteins Current Science, 62 (4). pp. 355-358. ISSN 0011-3891

Joseph, M. ; Nagaraj, R. (1992) Unfolding of lysozyme by breaking its disulphide bridges results in exposure of hydrophobic sites Biochemistry International, 26 (6). pp. 973-978. ISSN 0158-5231

Rao, N. M. ; Nagaraj, R. (1991) Anomalous stimulation of Escherichia coli alkaline phosphatase activity in guanidinium chloride. Modulation of the rate-limiting step and negative cooperativity Journal of Biological Chemistry, 266 (8). pp. 5018-5024. ISSN 0021-9258

Sitaram, N. ; Nagaraj, R. (1990) A synthetic 13-residue peptide corresponding to the hydrophobic region of bovine seminalplasmin has antibacterial activity and also causes lysis of red blood cells Journal of Biological Chemistry, 265 (18). pp. 10438-10442. ISSN 0021-9258

Vairamani, M. ; Srinivas, R. ; Viswanadha Rao, G. K. ; Nagaraj, R. ; Laxma Reddy, G. ; Saberwal, G. (1990) Mass spectra of t-butyloxycarbonyl (BOC)-protected peptides Organic Mass Spectrometry, 25 (2). pp. 97-100. ISSN 0030-493X

Reddy, G. L. ; Nagaraj, R. (1989) Circular dichroism studies on synthetic signal peptides indicate beta-conformation as a common structural feature in highly hydrophobic environment Journal of Biological Chemistry, 264 (28). pp. 16591-16597. ISSN 0021-9258

Rao, N. M. ; Nagaraj, R. (1989) A recycling assay for alkaline phosphatase applied to studies on its transport in E. coli K12 Journal of Biochemical and Biophysical Methods, 19 (4). pp. 301-308. ISSN 0165-022X

Saberwal, Gayatri ; Nagaraj, Ramakrishnan (1989) A synthetic peptide corresponding to the hydrophobic amino terminal region of pardaxin can perturb model membranes of phosphatidyl choline and serine Biochimica et Biophysica Acta: Biomembranes, 984 (3). pp. 360-364. ISSN 0005-2736

Sagar, Amara J. ; Mahalakshmi, Yeditha V. ; Nagaraj, Ramakrishnan ; Pandit, Madhusudan W. (1989) Antigenic sites on ribonuclease A synthetic peptides corresponding to the sites 37-42 and 83-88 on ribonuclease A show immunogenicity International Journal of Peptide and Protein Research, 33 (6). pp. 452-456. ISSN 0367-8377

Joseph, M. ; Nagaraj, R. (1988) Interaction of a hydrophobic model peptide and its fatty acid derivative with lipid vesicles FEBS Letters, 238 (2). pp. 411-414. ISSN 0014-5793

Nagaraj, Ramakrishnan ; Joseph, Mercy ; Reddy, Gundlapally Laxma (1987) Perturbation of the lipid bilayer of model membranes by synthetic signal peptides Biochimica et Biophysica Acta: Biomembranes, 903 (3). pp. 465-472. ISSN 0005-2736

Nagaraj, R. (1987) Role of the hydrophobic region of signal sequences in the targeting of proteins to membranes and translocation across the hydrophobic membrane barrier Proceedings of the Indian Academy of Sciences - Chemical Sciences, 98 (5-6). pp. 479-485. ISSN 0253-4134

Laxma Reddy, G. ; Nagaraj, R. (1987) Circular dichroism studies on synthetic peptides corresponding to the cleavage site region of precursor proteins International Journal of Peptide and Protein Research, 29 (4). pp. 497-503. ISSN 0367-8377

Joseph, Mercy ; Nagaraj, Ramakrishnan (1987) Circular dichroism studies on a synthetic peptide corresponding to the membrane-spanning region of vesicular stomatitis virus G protein and its fatty acyl derivative Biochimica et Biophysica Acta (BBA) - Protein Structure and Molecular Enzymology, 911 (2). pp. 231-237. ISSN 0167-4838

Nagaraj, R. (1987) Protein localization in cells Current Science, 56 (1). pp. 1-6. ISSN 0011-3891

Laxma Reddy, G. ; Nagaraj, R. (1986) Circular dichroism studies on the signal sequence of E. coli alkaline phosphatase indicate the presence of both α-helix and β-structure in hydrophobic environments FEBS Letters, 202 (2). pp. 349-352. ISSN 0014-5793

Laxma Reddy, G. ; Nagaraj, R. (1986) Solid phase synthesis of the signal sequence of E. coli alkaline phosphatase Proceedings of the Indian Academy of Sciences - Chemical Sciences, 97 (1). pp. 71-75. ISSN 0253-4134

Reddy, Gundlapally Laxma ; Nagaraj, Ramakrishnan (1985) Circular dichroism studies on synthetic signal peptides Biochimica et Biophysica Acta (BBA) - Protein Structure and Molecular Enzymology, 831 (3). pp. 340-346. ISSN 0167-4838

Suguna, K. ; Ramakumar, S. ; Nagaraj, R. ; Balaram, P. (1985) Structure of cyclo(-α-aminoisobutyryl-L-phenylalanyl-), CHNO Acta Crystallographica Section C: Crystal Structure Communications, 41 (2). pp. 284-286. ISSN 0108-2701

Laxma Reddy, G. ; Bikshapathy, E. ; Nagaraj, R. (1985) Solid phase synthesis of signal sequence fragments employing the transesterification method of cleavage Tetrahedron Letters, 26 (35). pp. 4257-4260. ISSN 0040-4039

Nagaraj, R. (1984) Interaction of synthetic signal sequence fragments with model membranes FEBS Letters, 165 (1). pp. 79-82. ISSN 0014-5793

Francis, A. K. ; Rao, Ch. Pulla ; Iqbal, M. ; Nagaraj, R. ; Vijayan, M. ; Balaram, P. (1982) Helical conformations of three crystalline pentapeptide fragments of suzukacillin, a membrane channel forming polypeptide Biochemical and Biophysical Research Communications, 106 (4). pp. 1240-1247. ISSN 0006-291X

Mathew, M. K. ; Nagaraj, R. ; Balaram, P. (1982) Membrane channel-forming polypeptides. Aqueous phase aggregation and membrane-modifying activity of synthetic fluorescent alamethicin fragments Journal of Biological Chemistry, 257 (5). pp. 2170-2176. ISSN 0021-9258

Mathew, M. K. ; Nagaraj, R. ; Balaram, P. (1982) Ionophore-mediated transmembrane movement of divalent cations in small unilamellar liposomes: an evaluation of the chlortetracycline fluorescence technique and correlations with black lipid membrane studies Journal of Membrane Biology, 65 (1-2). pp. 13-17. ISSN 0022-2631

Kamwaya, M. E. ; Oster, O. ; Bradaczek, H. ; Ponnuswamy, M. N. ; Parthasarathy, S. ; Nagaraj, R. ; Balaram, P. (1982) Structure of tert-butyloxycarbonyl-L-alanyl-L-proline monohydrate (t-Boc-Ala-Pro) Acta Crystallographica Section B: Structural Science, 38 (1). pp. 172-176. ISSN 0108-7681

Pulla Rao, Ch. ; Shamala, N. ; Nagaraj, R. ; Rao, C. N. R. ; Balaram, P. (1981) Hydrophobic channels in crystals of an α-aminoisobutyric acid pentapeptide Biochemical and Biophysical Research Communications, 103 (3). pp. 898-904. ISSN 0006-291X

Balaram, P. ; Mathewa, M. K. ; Nagaraj, R. (1981) Fluorescent alamethicin fragments a study of membrane activity and aqueous phase aggregation Biochimica et Biophysica Acta: Biomembranes, 649 (2). pp. 336-342. ISSN 0005-2736

Ishizaki, H. ; Balaram, P. ; Nagaraj, R. ; Venkatachalapathi, Y. V. ; Tu, A. T. (1981) Determination of β-turn conformation by laser Raman spectroscopy Biophysical Journal, 36 (3). pp. 509-517. ISSN 0006-3495

Iqbal, M. ; Nagaraj, R. ; Balaram, P. (1981) H N.M.R. studies of protected α-aminoisobutyric acid containing peptides: chemical shift nonequivalence of benzyloxycarbonyl methylene protons International Journal of Peptide and Protein Research, 18 (2). pp. 208-213. ISSN 0367-8377

Nair, C. M. K. ; Nagaraj, R. ; Ramaprasad, S. ; Balaram, P. ; Vijayan, M. (1981) Internal water bridge and antiparallel sheet in the structure of benzyloxycarbonyl-L-alanyl-D-phenylalanyl-L-proline monohydrate Acta Crystallographica Section B: Structural Science, 37 (3). pp. 597-601. ISSN 0108-7681

Mathew, M. K. ; Nagaraj, R. ; Balaram, P. (1981) Alamethicin and synthetic peptide fragments as uncouplers of mitochondrial oxidative phosphorylation. Effect of chain length and change Biochemical and Biophysical Research Communications, 98 (2). pp. 548-555. ISSN 0006-291X

Nagaraj, Ramakrishnan ; Balaram, Padmanabhan (1981) Alamethicin, a transmembrane channel Accounts of Chemical Research, 14 (11). pp. 356-362. ISSN 0001-4842

Nagaraj, R. ; Balaram, P. (1981) Conformations of synthetic alamethicin fragments. Evidence for 3 helical folding from 270-MHz hydrogen-1 nuclear magnetic resonance and circular dichroism studies Biochemistry, 20 (10). pp. 2828-2835. ISSN 0006-2960

Nagaraj, R. ; Balaram, P. (1981) Racemization at proline residues during peptide bond formation : a study of diastereomeric mixtures of synthetic alamethicin fragments by 270 MHz ¹H NMR Tetrahedron, 37 (10). pp. 2001-2005. ISSN 0040-4020

Nagaraj, R. ; Balaram, P. (1981) Solution phase synthesis of alamethicin I Tetrahedron, 37 (6). pp. 1263-1270. ISSN 0040-4020

Nagaraj, R. ; Mathew, M. K. ; Balaram, P. (1980) Cation translocating effects of alamethicin and its synthetic fragments in lipid membranes: influence of peptide chain length and charge FEBS Letters, 121 (2). pp. 365-368. ISSN 0014-5793

Nagaraj, R. ; Venkatachalapathi, Y. V. ; Balaram, P. (1980) Rotational isomerism about the C_α-CO bond in proline derivatives International Journal of Peptide and Protein Research, 16 (4). pp. 291-298. ISSN 0367-8377

Venkataram Prasad, B. V. ; Shamala, N. ; Nagaraj, R. ; Balaram, P. (1980) The crystal structure of benzyloxycarbonyl-(α-aminoisobutyryl)-L-alanyl methyl ester Acta Crystallographica Section B: Structural Science, 36 (1). pp. 107-110. ISSN 0108-7681

Rao, C. Pulla ; Nagaraj, R. ; Rao, C. N. R. ; Balaram, P. (1980) Infrared studies on the conformation of synthetic alamethicin fragments and model peptides containing α-aminoisobutyric acid Biochemistry, 19 (3). pp. 425-431. ISSN 0006-2960

Nagaraj, R. ; Balaram, P. (1980) Membrane modifying linear polypeptide antibiotics Proceedings of the Indian National Science Academy - Part A: Physical Sciences . pp. 199-218. ISSN 0370-0046

Nagaraj, R. ; Sudha, T. S. ; Shivaji, S. ; Balaram, P. (1979) Enkephalin analogs. Introduction of stereochemical constraints, metal binding sites and fluorescent groups FEBS Letters, 106 (2). pp. 271-274. ISSN 0014-5793

Nagaraj, R. ; Balaram, P. (1979) Fluorescent hydrophobic peptide fragments of emerimicin. Models for the study of peptide aggregation and interactions with lipids and proteins Biochemical and Biophysical Research Communications, 89 (4). pp. 1041-1049. ISSN 0006-291X

Venkataram Prasad, B. V. ; Shamala, N. ; Nagaraj, R. ; Chandrasekaran, R. ; Balaram, P. (1979) Crystal and molecular structure of benzyloxycarbonyl-α-aminoisobutyryl-L-prolyl methylamide: the observation of an X₂-Pro₃ Type III β-Turn Biopolymers, 18 (7). pp. 1635-1646. ISSN 0006-3525

Pulla Rao, Ch. ; Nagaraj, R. ; Rao, C. N. R. ; Balaram, P. (1979) Infrared spectroscopy as a probe for the development of secondary structure in the amino-terminal segment of alamethicin FEBS Letters, 100 (2). pp. 244-248. ISSN 0014-5793

Nagaraj, R. ; Shamala, N. ; Balaram, P. (1979) Stereochemically constrained linear peptides. Conformations of peptides containing α -aminoisobutyric acid Journal of the American Chemical Society, 101 (1). pp. 16-20. ISSN 0002-7863

Nagaraj, R. ; Balaram, P. (1978) A stereochemically-constrained enkephalin analog: α-Aminoisobutyryl² methionine⁵ enkephalinamide FEBS Letters, 96 (2). pp. 273-276. ISSN 0014-5793

Shamala, N. ; Nagaraj, R. ; Balaram, P. (1977) The crystal and molecular structure of the amino terminal tetrapeptide of alamethicin. a novel 3₁₀ helical Biochemical and Biophysical Research Communications, 79 (1). pp. 292-298. ISSN 0006-291X

Nagaraj, Ramakrishnan ; Balaram, Padmanabhan (1977) Facile diketopiperazine formation from dipeptides containing α-aminoisobutyric acid. Conformational factors influencing cyclisation Heterocycles, 7 (2). pp. 885-890. ISSN 0385-5414