Surajit Bhattacharjya

Synthetic Interface Peptides as Inactivators of Multimeric Enzymes: Inhibitory and Conformational Properties of Three Fragments from Lactobacillus casei Thymidylate Synthase (1998)

Prasanna, Variath, Bhattacharjya, Surajit, Balaram, Padmanabhan

Three synthetic peptides corresponding to distinct segments of the subunit interface of the dimeric enzyme thymidylate synthase (residues 17-38, N 22; residues 174-190, M 17; and residues 201-220, C...

Folded conformations of antigenic peptides from riboflavin carrier protein in aqueous hexafluoroacetone (1998)

Bhattacharjya, Surajit, Awasthi, Satish K, Adiga, Radhakantha P, Balaram, Padmanabhan

Riboflavin carrier protein (RCP) plays an important role in transporting vitamin B2 across placental membranes, a process critical for maintenance of pregnancy. Association of the vitamin with the...

Synthetic Interface Peptides as Inactivators of Multimeric Enzymes: Inhibitory and Conformational Properties of Three Fragments from Lactobacillus casei Thymidylate Synthase (1998)

Prasanna, Variath, Bhattacharjya, Surajit, Balaram, Padmanabhan

Three synthetic peptides corresponding to distinct segments of the subunit interface of the dimeric enzyme thymidylate synthase (residues 17-38, N 22; residues 174-190, M 17; and residues 201-220, C...

Folded conformations of antigenic peptides from riboflavin carrier protein in aqueous hexafluoroacetone (1998)

Bhattacharjya, Surajit, Awasthi, Satish K, Adiga, Radhakantha P, Balaram, Padmanabhan

Riboflavin carrier protein (RCP) plays an important role in transporting vitamin B2 across placental membranes, a process critical for maintenance of pregnancy. Association of the vitamin with the...

Effects of Organic Solvents on Protein Structures: Observation of a Structured Helical Core in Hen Egg-White Lysozyme in Aqueous Dimethylsulfoxide (1997)

Bhattacharjya, Surajit, Balaram, P

A partly folded state of hen egg-white lysozyme has been characterized in 50% DMSO. Low concentrations of DMSO (10%) a cooperative transition of the structure to a new, partially folded state is...

\omega-Amino Acids in Peptide Design. Crystal Structures and Solution Conformations of Peptide Helices Containing a \beta-Alanyl-\gamma-Aminobutyryl Segment (1997)

Karle, IL, Pramanik, Animesh, Banerjee, Arindam, Bhattacharjya, Surajit, Balaram, P

Insertion of achiral \omega-amino acids into peptide sequences results in replacement of scissile peptide bonds by proteolytically stable C-C bonds. This provides a convenient means of creating...

Characterization of Helix Terminating Schellman Motifs in Peptides. Crystal Structure and Nuclear Overhauser Effect Analysis of a Synthetic Heptapeptide Helix (1997)

Datta, Saumen, Shamala, N, Banerjee, Arindam, Pramanik, Animesh, Bhattacharjya, Surajit, Balaram, P

The Schellman motif is a widely observed, helix terminating structural motif in proteins, which is achieved by the adoption of a left-handed helical (alphaL) conformation by a C-terminus residue. The...

‘‘Teflon-Coated Peptides’’: Hexafluoroacetone Trihydrate as a Structure Stabilizer for Peptides (1997)

Rajan, Rahul, Awasthi, Satish K, Bhattacharjya, Surajit, Balaram, P

In the last 30 years, since the early work of Goodman and co-workers introducing trifluoroethanol as a solvent in peptide conformational analysis,1,2 the ability of fluoroalcohols to stabilize...

Hexafluoroacetone hydrate as a structure modifier in proteins: Characterization of a molten globule state of hen egg-white lysozyme (1997)

Bhattacharjya, Surajit, Balaram, Padmanabhan

A molten globule-like state of hen egg-white lysozyme has been characterized in 25% aqueous hexafluoroacetone hydrate (HFA) by CD, fluorescence, NMR, and H/D exchange experiments. The far UV CD...

Polymyxin B Nonapeptide: Conformations in Water and in the Lipopolysaccharide-Bound State Determined by Two-Dimensional NMR and Molecular Dynamics (1997)

Bhattacharjya, Surajit, David, Sunil A, Mathan, VI, Balaram, P

Polymyxin B nonapeptide (PMN) is a derivative of polymyxin B, an alpha, gamma-diaminobutyric acid-rich decapeptide from Bacillus polymyxa that displays antimicrobial and lipopolysaccharide...

Effects of Organic Solvents on Protein Structures: Observation of a Structured Helical Core in Hen Egg-White Lysozyme in Aqueous Dimethylsulfoxide (1997)

Bhattacharjya, Surajit, Balaram, P

A partly folded state of hen egg-white lysozyme has been characterized in 50% DMSO. Low concentrations of DMSO (10%) a cooperative transition of the structure to a new, partially folded state is...

\omega-Amino Acids in Peptide Design. Crystal Structures and Solution Conformations of Peptide Helices Containing a \beta-Alanyl-\gamma-Aminobutyryl Segment (1997)

Karle, IL, Pramanik, Animesh, Banerjee, Arindam, Bhattacharjya, Surajit, Balaram, P

Insertion of achiral \omega-amino acids into peptide sequences results in replacement of scissile peptide bonds by proteolytically stable C-C bonds. This provides a convenient means of creating...

Characterization of Helix Terminating Schellman Motifs in Peptides. Crystal Structure and Nuclear Overhauser Effect Analysis of a Synthetic Heptapeptide Helix (1997)

Datta, Saumen, Shamala, N, Banerjee, Arindam, Pramanik, Animesh, Bhattacharjya, Surajit, Balaram, P

The Schellman motif is a widely observed, helix terminating structural motif in proteins, which is achieved by the adoption of a left-handed helical (alphaL) conformation by a C-terminus residue. The...

‘‘Teflon-Coated Peptides’’: Hexafluoroacetone Trihydrate as a Structure Stabilizer for Peptides (1997)

Rajan, Rahul, Awasthi, Satish K, Bhattacharjya, Surajit, Balaram, P

In the last 30 years, since the early work of Goodman and co-workers introducing trifluoroethanol as a solvent in peptide conformational analysis,1,2 the ability of fluoroalcohols to stabilize...

Hexafluoroacetone hydrate as a structure modifier in proteins: Characterization of a molten globule state of hen egg-white lysozyme (1997)

Bhattacharjya, Surajit, Balaram, Padmanabhan

A molten globule-like state of hen egg-white lysozyme has been characterized in 25% aqueous hexafluoroacetone hydrate (HFA) by CD, fluorescence, NMR, and H/D exchange experiments. The far UV CD...

Polymyxin B Nonapeptide: Conformations in Water and in the Lipopolysaccharide-Bound State Determined by Two-Dimensional NMR and Molecular Dynamics (1997)

Bhattacharjya, Surajit, David, Sunil A, Mathan, VI, Balaram, P

Polymyxin B nonapeptide (PMN) is a derivative of polymyxin B, an alpha, gamma-diaminobutyric acid-rich decapeptide from Bacillus polymyxa that displays antimicrobial and lipopolysaccharide...

Omega Amino Acids in Peptide Design: Incorporation into Helices (1996)

Banerjee, Arindam, Pramanik, Animesh, Bhattacharjya, Surajit, Balaram, P

Incorporation of easily available achiral omega-amino acid residues into an oligopeptide results in substitution of amide bonds by polymethylene units of an aliphatic chain, thereby providing a...

Omega Amino Acids in Peptide Design: Incorporation into Helices (1996)

Banerjee, Arindam, Pramanik, Animesh, Bhattacharjya, Surajit, Balaram, P

Incorporation of easily available achiral omega-amino acid residues into an oligopeptide results in substitution of amide bonds by polymethylene units of an aliphatic chain, thereby providing a...

Solid State and Solution Conformations of a Helical Peptide with a Central Gly-Gly Segment (1996)

Karle, Isabella L, Banerjee, Arindam, Bhattacharjya, Surajit, Balaram, P

The influence of amino acids with contrasting con formational tendencies on the stereochemistry of oligopeptides has been investigated using an octapeptide Boc-Leu-Aib- Val-Gly-Gly-Leu-Aih-Val-OMe,...

Solid State and Solution Conformations of a Helical Peptide with a Central Gly-Gly Segment (1996)

Karle, Isabella L, Banerjee, Arindam, Bhattacharjya, Surajit, Balaram, P

The influence of amino acids with contrasting con formational tendencies on the stereochemistry of oligopeptides has been investigated using an octapeptide Boc-Leu-Aib- Val-Gly-Gly-Leu-Aih-Val-OMe,...

Polymerization of the SAM domain of MAPKKK Ste11 from the budding yeast: Implications for efficient signaling through the MAPK cascades

Bhattacharjya, Surajit, Xu, Ping, Chakrapani, Mukundan, Johnston, Linda, Ni, Feng

The sterile α-motif (SAM) is a protein module ~70 residues long and mainly involved in the protein–protein interactions of cell signaling and transcriptional repression. The SAM domain of the...

pH-induced conformational transitions of a molten–globule–like state of the inhibitory prodomain of furin: Implications for zymogen activation

Bhattacharjya, Surajit, Xu, Ping, Xiang, Hui, Chrétien, Michel, Seidah, Nabil G., Ni, Feng

The endoprotease furin, which belongs to the family of mammalian proprotein convertase (PC), is synthesized as a zymogen with an N-terminal, 81-residue inhibitory prodomain. It has been shown that...