Browsing Molecular Biophysics Unit (MBU) by Title
Now showing items 38-57 of 380
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Conformational Analysis And Design Of Disulfides In Antiparallel β-Sheets And Helices
(2013-08-30)Disulfides are the primary covalent interactions within a protein molecule that connect residues which are sequentially distant. Naturally occurring disulfides enhance the stability of the protein by destabilization of ... -
Conformational analysis of cyclic peptides containing Cis peptide units
The dimensions of the cis peptide unit obtained as an average from the three sets of data viz., cyclic di-, higher, and tripeptides are summarized in Table 2.11. On a close examination of the Table, the following salient ... -
Conformational Analysis Of Designed Alpha-Omega Hybrid Peptides
(2011-10-21)The insertion of ω- amino acid residues as guests into host α-peptide sequences permits expansion of the range of polypeptide secondary structures. The term ω- amino acid is used to refer to the entire family of residues ... -
Conformational Analysis of Designed and Natural Peptides : Studies of Aromatic/Aromatic and Aromatic/Proline Interactions by NMR
(2018-04-05)This thesis describes NMR studies which probe weak interactions between amino acid side chains in folded peptide structures. Aromatic/aromatic interactions between facing phenylalanine residues have been probed in antiparallel ... -
Conformational and Dynamic Motifs in the Biomolecular Recognition of Glycan and Acetyl Functionalities
Biomolecular recognition is a fundamental principle underlying all cellular processes, driven by specific and tightly regulated interactions. This thesis explores the structural basis of recognition mechanisms in two ... -
Conformational Heterogeneity, Solution Structure and Autoregulatory Roles of the MazE9 Antitoxin from Mycobacterium tuberculosis
The work presented in this thesis endeavors to decode the details of the dynamics of MazE9 antitoxin of the Mycobacterium tuberculosis MazEF9 toxin-antitoxin system and the transcriptional autoregulation effected by it. ... -
conformational studies on hydrogen bonded cyclic hexapeptides
In the first place, the uniqueness of any MEC within a certain region demonstrates the successful incorporation of the hydrogen?bond energy function in a minimization program. In particular, its interpolation with the ... -
Conformational studies on peptides containing alpha aminoisobutyric acid and polypeptides with alternating LD-Sequences
The results of semiempirical energy calculations on poly(Aib), varying ACO and ?(NC?C) separately and simultaneously, suggest a novel fourfold helical structure as an energetically favourable model for poly(Aib). This novel ... -
Conformational studies on polynuc leotides and nucleic acids
After an introduction to the nucleic acids and the conformational studies on them at the monomeric and polymeric levels, the need for investigations on the conformations of 3?-nucleotides is outlined. The significance of ... -
Conformationalflexibility of DNA: Polymorphism and handness
Observation of both right- and left-helical DNA fragments in the single crystals and different poly morphous forms of DNA in fibres suggest that the con formational flexibility is inherent in the DNA mole cule. However, ... -
Crystal Structure Of Jacalin At 3.0A Resolution
(2012-11-15) -
Crystal structure of low humidity monoclinic lysozyme at 1.75 Resolution
It has been demonstrated earlier in this laboratory that many protein crystals, but not all, undergo reversible structural transformations, as evidenced by abrupt changes in unit cell dimensions, diffraction pattern, and ... -
Crystallization and Preliminary Structural Studies on Mycobacterium tuberculosis RuvX
The deadly pathogen Mycobacterium tuberculosis has been characterized for its virulence in immense detail. Regardless of this, the capability of M. tuberculosis to combat extreme stress conditions inside the host cell for ... -
Crystallographic and analytical ultracentrifugation studies of the E. coli acetohydroxy acid synthase I enzyme
This thesis ellucidates the mechanism of activation and regulation of AHAS I enzyme from Escherichia coli that was characterised using crystallographic and sedimentation velocity analytical ultracentrifugation studies. AHAS ... -
Cyclic peptide disulfides as conformational models; synthesis and spectroscopic studies
The study of small peptides has been motivated both by the high biological activity manifested by many peptides and their potential use as model systems for understanding polypeptide and protein structure. The development ... -
Deciphering Structure-Function Relationships in a Two-Subunit-Type GMP Synthetase by Solution NMR Spectroscopy
(2018-04-24)The guanosine monophosphate synthetase (GMPS) is a class I glutamine amidotransferase, involved in the de-novo purine nucleotide biosynthesis. The enzyme catalyzes the biochemical transformation of xantosine (XMP) into ... -
Decoding determinants of selectivity in biomolecules
Molecular events demonstrate remarkable specificity amid complexity in its cellular environment. This phenomenon, termed biomolecular recognition, is fundamental to the organization and regulation of biological systems. ...