Browsing Division of Biological Sciences by Advisor "Muniyappa, K"
Now showing items 1-20 of 21
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Biochemical and Functional Characterization of Mycobacterium Tuberculosis Nucleoid-Associated Proteins H-NS and mIHF
(2018-08-11)Bacteria lack nucleus and any other membrane-bound organelles. Hence all the cellular components, including proteins, DNA, RNA and other components are located within the cytoplasm. The region of the cell which encompasses ... -
Biochemical Characterization Of Saccharomyces cerevisiae Mre11/Rad50/Xrs2 Using Telomeric DNA : A Role For The Endonucleolytic Activity Of Mre11 In Telomere Length Maintenance And Its Regulation By Rad50
(2009-05-15)Meiotic recombination is a prerequisite for exchange of genetic information in all Sexually reproducing organisms. This process is initiated by the formation of double stranded breaks (DSBs) in DNA followed by homology ... -
Conservation and divergence of the nucleotide excision repair pathway: Comparison of UvrB and UvrC proteins from Mycobacterium tuberculosis and Escherichia coli reveal significant differences in their functional properties
This thesis is presented in three chapters divided by topics. Chapter I will begin with an overview of literature regarding different types of DNA damage, DNA repair pathways in bacteria, properties of E. coli UvrABC ... -
Developmental And Functional Regulation Of DNA Topoisomerase II in Postnatal Rat Testis
(Indian Institute of Science, 2005-11-23)Characterization of the polyoma virus chromosome as a circular, double-stranded, supercoiled DNA (Weil and Vinograd, 1963; Vinograd et al.,-1965) made it apparent that the DNA enzymatic machinery faces a formidable problem ... -
The dual-targeting of Saccharomyces cerevisiae Pso2 into the nucleus and mitochondria is regulated by post-translational modifications: Implications for organelle-specific DNA repair
The repair of DNA interstrand crosslinks (ICLs) involves the concerted action of multiple DNA repair pathways. In eukaryotes, ICLs are sensed and repaired by replication-coupled or replication-independent mechanisms in ... -
The Elucidation of the Mechanism of Meiotic Chromosome Synapsis in Saccharomyces Cerevisiae : Insights into the Function of Synaptonemal Complex, Hop1 and Red1, Proteins and the Significance of DNA Quadruplex Structures
(2017-12-03)Meiosis is a specialized type of cell division where two rounds of chromosome segregation follow a single round of DNA duplication resulting in the formation of four haploid daughter cells. Once the DNA replication is ... -
Functions Of Nucleosomes And Other Regulatory Factor(S) In Homologous Recombination Promoted By RecA Protein
(Indian Institute of Science, 2005-04-18)Homologous genetic recombination occurs during the life cycle of virtually every organism Genetic studies especially in prokaryotes and fungi have defined the rules of recombination, led to the characterization of alternate ... -
Mycobacterium Leprae RecA Intein : A LAGLIDADG Homing Endonuclease, Displays A Unique Mode Of DNA Binding And Catalysis Compared To A Canonical LAGLIDADG Homing Enzyme
(2010-09-30)Mobile genetic elements are DNA sequences that move around to different positions within one genome or between different genomes. Mobile DNA elements were initially considered as selfish DNA sequences parasitizing the ... -
Mycobacterium Smegmatis RecA And SSB : Structure-Function Relationships, Interaction With Cofactors And Accessory Proteins
(2011-04-06)Homologous genetic recombination, because of its fundamental roles in the maintenance of genome stability and evolution, is an essential cellular function common to all organisms. This process also plays important roles ... -
Mycobacterium tuberculosis RecA intein, a novel LAGLIDADG homing endonuclease, displays dual target specificity in the presence of alternative cofactors
(Indian Institute of Science, 2005-05-10)Mobile inteins and introns are genetic elements capable of self-propagation by “homing” into host genes and occur in entire taxonomy: eubacteria, eukarya, archaea and viruses. The process of “homing” is promoted by an ... -
Processing Of DNA Recombination And Replication Intermediates By Mycobacterium Tuberculosis RuvA And RuvB Proteins
(2013-06-14)Homologous recombination (HR) is a highly conserved cellular process involved in the maintenance of chromosomal integrity and generation of genetic diversity. Biochemical and genetic studies have suggested that HR is ... -
Regulation of RecA nucleoprotein filament stability by RecX and the effects of RecA-membrane interaction on the activities of RecA in mycobacteria
E. coli RecA is a multifunctional protein known to be associated with the cell membrane, forming foci often located at the cell poles, which gets redistributed along the length of the cell during SOS response. Several lines ... -
The Role of Saccharomyces Cerevisiae MRX Complex and Sae2 in Maintenance of Genome Stability
(2018-06-11)In eukaryotes, the repair of DSBs is accomplished through two broadly defined processes: Non-Homologous End Joining (NHEJ) and Homologous Recombination (HR). The central step of HR is pairing and exchange of strands between ... -
Selective Binding Of Meiosis-Specific Yeast Hop1 Protein, or Its ZnF Motif, To The Holliday Junction Distorts The DNA Structure : Implications For Junction Migration And Resolution
(2010-09-30)Saccharomyces cerevisiae HOP1, which encodes a component of the synaptonemal complex, plays an important role in both gene conversion and crossing over between homologs, as well as enforces the meiotic recombination ... -
Structural and Functional Characterization of Quadruplex DNA Structures in Human Acetyl-CoA Carboxylase 1 Gene Promoters and Stabilization of G-quadruplex DNA by Carbazole-benzimidazole Conjugates
A number of studies have established that DNA targeting is a successful strategy in anticancer therapy. In recent years, however, the focus has shifted from double-stranded DNA to alternative DNA motifs such as G-quadruplex ... -
Structure-Function Relationships of Saccharomyces Cerevisiae Meiosis Specific Hop 1 Protein : Implications for Chromosome Condensation, Pairing and Spore Formation
(2018-03-07)Meiosis is a specialized type of cell division essential for the production of four normal haploid gametes. In early prophase I of meiosis, the intimate synapsis between homologous chromosomes, and the formation of chiasmata, ... -
Substrate interrogation of the CRISPR-Cas12a endonuclease reveals an unexpected functional plasticity
Substrate interrogation of the CRISPR-Cas12a endonuclease reveals an unexpected functional plasticity Currently, Cas9 and Cas12a (also known as Cpf1) are the sole members of a large family of RNA-guided nucleases that ...