Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Physical Sciences and Mathematics (53)
- Chemistry (51)
- Analytical Chemistry (18)
- Molecular Biology (15)
- Biophysics (12)
-
- Biology (11)
- Engineering (11)
- Microbiology (9)
- Nanoscience and Nanotechnology (6)
- Organic Chemistry (6)
- Medicine and Health Sciences (5)
- Neuroscience and Neurobiology (5)
- Bioinformatics (3)
- Materials Science and Engineering (3)
- Pharmacy and Pharmaceutical Sciences (3)
- Physical Chemistry (3)
- Biomedical Engineering and Bioengineering (2)
- Biostatistics (2)
- Biotechnology (2)
- Cell Biology (2)
- Cell and Developmental Biology (2)
- Genetics and Genomics (2)
- Statistics and Probability (2)
- Virology (2)
- Artificial Intelligence and Robotics (1)
- Cellular and Molecular Physiology (1)
- Chemicals and Drugs (1)
- Keyword
-
- RNA (18)
- Proteins (12)
- Nuclear magnetic resonance spectroscopy (9)
- Nucleic acids (8)
- Raman spectroscopy (8)
-
- DNA polymerases (7)
- Glutamic acid (7)
- Neurotransmitter receptors (6)
- Protein folding (6)
- Cataract (5)
- Genetic transcription (5)
- Glycosylation (5)
- Messenger RNA (5)
- NMR (5)
- Oligonucleotides (5)
- Amyloid beta-protein (4)
- Crystalline lens (4)
- Gene expression (4)
- Genetic regulation (4)
- Mass spectrometry (4)
- Mycobacterium tuberculosis (4)
- Nanobiotechnology (4)
- Protein (4)
- Staphylococcus aureus (4)
- Amyloid (3)
- Amyloid fibrils (3)
- Biochemical markers (3)
- Chemometrics (3)
- Crystallin (3)
- DNA (3)
- Publication Year
Articles 61 - 90 of 112
Full-Text Articles in Biochemistry
Beta-Sheet Forming Peptides By Design : Control Of Folding And Applications, Gaius Takor
Beta-Sheet Forming Peptides By Design : Control Of Folding And Applications, Gaius Takor
Legacy Theses & Dissertations (2009 - 2024)
The focus of the present research is the synthesis of polypeptides for the study of protein folding and misfolding and for the development of novel polypeptide-based optical antennas in nanotechnology. It is hypothesized that simple polypeptides can be used as models to mimic in vivo folding of globular proteins. Desired repetitive polypeptides were genetically encoded and expressed in E. coli using conventional methods and characterized using a variety of spectroscopic (including circular dichroism (CD), deep UV resonance Raman (DUVRR), UV-vis and fluorescence) and microscopic (atomic force microscopy (AFM) and transmission electron microscopy (TEM)) techniques. The polypeptides predominantly formed bilayer, fibrillar …
Investigation Of Enzymatically Synthesized Glycogen As A Novel Nanodendrimer For Therapeutic Delivery, Sarah Ann Engelberth
Investigation Of Enzymatically Synthesized Glycogen As A Novel Nanodendrimer For Therapeutic Delivery, Sarah Ann Engelberth
Legacy Theses & Dissertations (2009 - 2024)
The field of medicinal chemistry is ever expanding, designing and discovering new therapeutic strategies. Oftentimes, it is challenging for these therapeutics to undergo clinical translation due to ineffective administration or unwanted toxicity in vivo. As such, drug delivery vehicles are designed to overcome these hurdles, allowing for delivery to the site of action by improving biodistribution, protecting therapeutic cargo, and decreasing toxicity. The work presented here aims to investigate a naturally-derived carbohydrate nanodendrimer, enzymatically synthesized glycogen (ESG) for drug delivery. This nontoxic, highly-branched, glucose-based structure has interior void volumes to allow for cargo encapsulation as well as a large density …
The Chemistry Of New Garlic-Derived Organosulfur Compounds And The Molecular Basis Of Olfaction, Berenice Dethier
The Chemistry Of New Garlic-Derived Organosulfur Compounds And The Molecular Basis Of Olfaction, Berenice Dethier
Legacy Theses & Dissertations (2009 - 2024)
Garlic is a very popular condiment that has been used around the world for centuries. It is also a source of a remarkably extensive range of organosulfur compounds, whose chemistry is the focus of this thesis. The central reaction in formation of these compounds is the enzymatic cleavage of alk(en)yl cysteine sulfoxides by alliinases, which leads to sulfenic acids. The latter can then undergo condensation and rearrangement into various organosulfur compounds. Three aspects of the chemistry of garlic have been investigated in this thesis.
Study Of Protein-Protein Interaction By Using In-Cell Nmr In Human Cells, Asma Salem M Aldousary
Study Of Protein-Protein Interaction By Using In-Cell Nmr In Human Cells, Asma Salem M Aldousary
Legacy Theses & Dissertations (2009 - 2024)
We developed a new technology to study protein-protein interaction in mammalian cells. This technology is based high resolution of Nucleic Magnetic Resonance (NMR) spectroscopy. Using this technology we studied interaction between the receptor for advanced glycation endproducts (RAGE). RAGE- is a multiligand receptor of immunoglobulin receptor family that is activated by a multitude of ligands. Activation of RAGE results in signal transduction that leads to the inflammatory response implicated in the complications of Diabetes. RAGE is an emergent drug target that has been explored for the variety of pathologist including cancers, neurological disorders, inflammatory disease, and diabetes. and Intracellular effector …
A Survey Of The Current Drug Screening Techniques To Obtain Rational Design And Study Drug-Target Interactions, Stephen Dansereau
A Survey Of The Current Drug Screening Techniques To Obtain Rational Design And Study Drug-Target Interactions, Stephen Dansereau
Legacy Theses & Dissertations (2009 - 2024)
Different techniques have been developed over the years for the purpose of studying proteins and understanding their functions. Early techniques typically employed bioluminescence or fluorescence such such as the firefly protein luciferase and the jellyfish green fluorescent protein (GFP), respectively, to localize proteins within the cell. X-ray crystallography has also provided valuable structural details of many different proteins in vitro. Yet, nuclear magnetic resonance (NMR) spectroscopy offers the most realistic insight into proteins' physiologic structures and how proteins function in their native, cellular environments.
The Use Of Ion Mobility Spectrometry-Mass Spectrometry For The Structural Elucidation Of Progressively Larger Nucleic Acids, Jennifer Lynn Lippens
The Use Of Ion Mobility Spectrometry-Mass Spectrometry For The Structural Elucidation Of Progressively Larger Nucleic Acids, Jennifer Lynn Lippens
Legacy Theses & Dissertations (2009 - 2024)
The biomedical community and pharmaceutical industry have come to rely in ever
The Gammaturc Nanomachine Mechanism And Future Applications, Timothy Riehlman
The Gammaturc Nanomachine Mechanism And Future Applications, Timothy Riehlman
Legacy Theses & Dissertations (2009 - 2024)
The complexity and precision of the eukaryotic cell’s cytoskeletal network is unrivaled by any man-made systems, perfected by billions of years of evolution, mastering elegant processes of self-assembly, error correction, and self-repair. Understanding the capabilities of these networks will have important and far reaching applications in human medicine by aiding our understanding of developmental processes, cellular division, and disease mechanisms, and through biomimicry will provide insights for biosynthetic manufacturing at the nanoscale and across scales. My research utilizes cross species techniques from Human to the model organism of Fission Yeast to investigate the structure and mechanisms of the g-tubulin ring …
The Structural Heterogeneity And Dynamics Of Base Stacking And Unstacking In Nucleic Acids, Ada Anna Sedova
The Structural Heterogeneity And Dynamics Of Base Stacking And Unstacking In Nucleic Acids, Ada Anna Sedova
Legacy Theses & Dissertations (2009 - 2024)
Base stacking provides stability to nucleic acid duplexes, and base unstacking is involved in numerous biological functions related to nucleic acids, including replication, repair, transcription, and translation. The patterns of base stacking and unstacking in available nucleic acid crystal structures were classified after separation into their individual single strand dinucleotide components and clustering using a k-means-based ensemble clustering method. The A- and B-form proximity of these dinucleotide structures were assessed to discover that RNA dinucleotides can approach B-form-like structures. Umbrella sampling molecular dynamics simulations were used to obtain the potential of mean force profiles for base unstacking at 5'-termini for …
Rna Aptamer Mediated Manipulation Of The 70 Kilodalton Heat Shock Protein Chaperone Machinery, Deepak Thirunavukarasu
Rna Aptamer Mediated Manipulation Of The 70 Kilodalton Heat Shock Protein Chaperone Machinery, Deepak Thirunavukarasu
Legacy Theses & Dissertations (2009 - 2024)
Protein quality control involves refolding of damaged proteins and facilitating degradation of irreparable proteins. Understanding the protein quality control mechanism is critical, since defects in it has been implicated in a number of age-related diseases like neurodegenerative diseases and also in cancer. A vast network of molecular chaperones and proteolytic systems collaborate to maintain protein quality control. The 70 kilodalton Heat shock protein (Hsp70) is a highly conserved and ubiquitous chaperone, which interacts with a variety of protein substrates including newly synthesized polypeptides, unfolded, partially misfolded and native proteins to maintain protein quality control. Hsp70 chaperone function is coupled to …
Novel Nmr Based Technologies To Study Macromolecular Structures, Subhabrata Majumder
Novel Nmr Based Technologies To Study Macromolecular Structures, Subhabrata Majumder
Legacy Theses & Dissertations (2009 - 2024)
Nuclear Magnetic Resonance Spectroscopy (NMR) is one of the principle tools in structural biology to probe macromolecular structures and interactions. The atomic resolution afforded by this technique has been widely used to probe protein-protein, and protein-ligand interactions in-vitro. However, the natural milieu of the proteins is the living cell and the cellular cytoplasm is extremely heterogeneous. The NMR studies of folded protein in-cell, till now, have been limited by non-specific interactions of the cytosol. This thesis outlays a general methodology to study protein structure/interactions inside the living cells using NMR. In a closely related objective, it also describes the use …
Monitoring Ligand-Induced Nucleic Acid Conformational Changes Using Ion Mobility Spectrometry-Mass Spectrometry, Bill Kenneth Redick
Monitoring Ligand-Induced Nucleic Acid Conformational Changes Using Ion Mobility Spectrometry-Mass Spectrometry, Bill Kenneth Redick
Legacy Theses & Dissertations (2009 - 2024)
Three-dimensional structures of biopolymers frequently dictate the biological role those molecules play. As such, investigation into structure of nucleic acids can provide important information pertaining to how those nucleic acids work. Many nucleic acid species, especially single-stranded RNA, fold into unique structures that allow them to function properly. Metals, and other cationic species, are often bound to the nucleic acid to make folding into the proper structure more favorable by neutralizing the negative charge on the nucleic acid imparted by the phosphate group. This investigation explores tertiary structure of nucleic acids that have been folded in the presence of ligands …
Ph Regulation And The Assessment Of Renal Injury Biomarkers In A Warm Perfusion Renal Allograft Preservation System, Aaron Meyer
Ph Regulation And The Assessment Of Renal Injury Biomarkers In A Warm Perfusion Renal Allograft Preservation System, Aaron Meyer
Legacy Theses & Dissertations (2009 - 2024)
A shortage of viable kidneys available for transplantation exists today, as the number of individuals waiting for a kidney transplant continues to grow while the number of kidneys available each year for transplantation has remained stagnant. The development of technology that will allow for transplantation of organs that currently may be considered too damaged for transplant will provide access to a large number of donors who have experienced traumatic injury deaths resulting in loss of cardiac function. These potential donors account for the majority of all traumatic injury deaths in intensive care units, however their organs have experienced a degree …
Mechanisms Of Dna Synthesis And Fidelity By Y-Family Translesion And C-Family Replicative Polymerases, Purba Mukherjee
Mechanisms Of Dna Synthesis And Fidelity By Y-Family Translesion And C-Family Replicative Polymerases, Purba Mukherjee
Legacy Theses & Dissertations (2009 - 2024)
Since the discovery of the DNA polymerase by Arthur Kornberg nearly 60 years ago, there have been great advances in understanding the involvement of polymerases in replication and repair. Years of genetic, biochemical and structural studies have lead to the classification of DNA-dependent DNA polymerases into six families: A, B, C, D, X and Y. In this work, I have focussed on two different families, C and Y. Hence this work is divided into two parts. Part one discusses the studies on Y-family polymerases. All Y-family polymerases are involved in replicating past DNA lesions. The ability to tolerate unnatural nucleotides …
Modeling The Early, Aging-Related Changes In Human Recombinant Gammas-Crystallin In Vitro, Christiana Oluwaseun Salami
Modeling The Early, Aging-Related Changes In Human Recombinant Gammas-Crystallin In Vitro, Christiana Oluwaseun Salami
Legacy Theses & Dissertations (2009 - 2024)
Cataract is the leading cause of blindness in the world. Cataractous lenses scatter a significant part of the light entering the eye. Cataract can be of several types: Age-related cataract, secondary cataract, traumatic cataract, congenital cataract, and radiation cataract. Age-related cataract is the most common type of cataract. Several factors contribute to age-onset cataract; among them are the Post-Translational Modifications (PTMs) to the major lens proteins or crystallins, which constitute about 80-90% of the protein content of the lens. Predominant PTMs of the crystallins are oxidation, deamidation, phosphorylation, glycation, and disulfide crosslinking, which tend to increase as the lens ages.
Mechanisms Of Age-Related Inflammation And Cancer : The Synergistic Effect Of Oxidants And Calcium, Donald A. Mccarthy
Mechanisms Of Age-Related Inflammation And Cancer : The Synergistic Effect Of Oxidants And Calcium, Donald A. Mccarthy
Legacy Theses & Dissertations (2009 - 2024)
The accumulation of senescent cells during the process of aging has been implicated as causal in numerous age-related pathologies. Senescent cells adopt a secretory phenotype consisting of many factors including matrix remodeling enzymes, growth factors, cytokines, and chemokines. Their secretory nature is the primary reason that they are associated with disease, but it remains unclear why they become so inflammatory. Using primary human fibroblasts cultured to senescence, we mechanistically determined why senescent cells are such potent inducers of inflammation. Our findings indicate that the early production of the cytokine Interleukin 1-α (IL-1α) is central to this transition. We found that …
Probing Secondary And Tertiary Rna Folding Using Force And Temperature, William Stephenson
Probing Secondary And Tertiary Rna Folding Using Force And Temperature, William Stephenson
Legacy Theses & Dissertations (2009 - 2024)
RNA folding is the process whereby a single stranded RNA molecule assumes its three-dimensional functional conformation. Along with the protein folding problem, the RNA folding problem remains as one of the great unsolved problems in biophysics. Generally RNA folding occurs in a hierarchical manner whereby the sequence of an RNA (primary structure) determines which regions will form helical segments (secondary structure) before further rearrangement and base pairing of secondary structure motifs (tertiary structure). Due to the intimate connection between structure and function within molecular biology, increased familiarity with the thermodynamic and kinetic factors that govern RNA folding will permit the …
Mechanistic Studies Of C- And Y-Family Dna Polymerases, Indrajit Lahiri
Mechanistic Studies Of C- And Y-Family Dna Polymerases, Indrajit Lahiri
Legacy Theses & Dissertations (2009 - 2024)
DISSERTATION ABSTRACT
Raman Spectroscopy Of Blood Serum And Cerebrospinal Fluid And Multivariate Data Analysis For Alzheimer's Disease Diagnostics, Elena Ryzhikova
Raman Spectroscopy Of Blood Serum And Cerebrospinal Fluid And Multivariate Data Analysis For Alzheimer's Disease Diagnostics, Elena Ryzhikova
Legacy Theses & Dissertations (2009 - 2024)
The efficient and accurate diagnosis at the early stages of dementia is a key moment for effective treatment and productive research to find a new ways to combat the disease. It is especially true for Alzheimer's disease (AD) for which there is no effective cure, but several treatments are known to allow slowing down the degenerative processes. Alzheimer's disease (AD) displays only non-specific clinical symptoms of mental decline for decades after the initiation and is very challenging to differentiate even at the later stages when it becomes very aggressive. Despite the great need, current diagnostic tests are unable to diagnose …
A Structural And Functional Comparison Of Human Immunodeficiency Virus Type 1 Nucleocapsid Protein (Ncp7) And Other Retroviral Nucleocapsid Proteins, Christopher Richard Cavender
A Structural And Functional Comparison Of Human Immunodeficiency Virus Type 1 Nucleocapsid Protein (Ncp7) And Other Retroviral Nucleocapsid Proteins, Christopher Richard Cavender
Legacy Theses & Dissertations (2009 - 2024)
Human immunodeficiency virus type 1 (HIV-1) is a retrovirus belonging to the lentivirus genus of the orthoretrovirinae family. HIV-1 is widely known for causing acquired immunodeficiency syndrome (AIDS) in humans and being responsible for 1.8 million deaths due to AIDS associated illnesses in 201016.
The Genetic Engineering Of Motor Proteins, Rachael M. Hartz
The Genetic Engineering Of Motor Proteins, Rachael M. Hartz
Legacy Theses & Dissertations (2009 - 2024)
Molecular motors are a remarkable feature within living organisms that are responsible for directional mechanical motion, which is driven by adenosine triphosphate (ATP) hydrolysis. Actin-binding molecular motors are of specific interest in the field of nanotechnology as filamentous actin is capable of carrying cargo, such as quantum dots, while it is translocated along a motor coated surface. The binding regions of motor proteins, which are known to interact with actin, such as Myosin, have been thoroughly examined and identified. Rapid genetic engineering of the ATP-hydrolyzing enzyme, adenosine kinase, to incorporate these binding regions is possible through the use of site- …
Protein Structures Under Physiological Conditions, Karl Michael Bertrand
Protein Structures Under Physiological Conditions, Karl Michael Bertrand
Legacy Theses & Dissertations (2009 - 2024)
My research focused on the evaluation of protein structures and protein dynamics inside eukaryotic cells under physiological conditions. The primary analyses of my research involved the use of in-cell Nuclear Magnetic Resonance spectroscopy using Heteronuclear Single Quantum Coherence experiments. This allowed me to visualize protein structures at an atomic resolution level, as well as, study the interactions of these proteins with small molecules.
Molecular Biochemical Study Of The Cataract-Associated Mutants In Human Gammad-Crystallin, Cindy Yeung
Molecular Biochemical Study Of The Cataract-Associated Mutants In Human Gammad-Crystallin, Cindy Yeung
Legacy Theses & Dissertations (2009 - 2024)
Cataract is a vision impairment disease that leads to light scattering and opacity of the eye lens. It is recognized as the most prevalent cause of blindness. Most cataracts occur due to aging, but those that occur in childhood or in young adults are typically of genetic origin. In the young (developing) eye, post–surgical complications such as glaucoma are common after cataract surgery. Hence there is a great need to develop non-surgical intervention strategies for the treatment of cataract. Here, two cataract-associated mutants of human γD-crystallin (HGD): i) Arg76 to Ser (R76S) and ii) a truncation mutation at Trp156 (W156X …
Structural Biology Of The Receptor For Advanced Glycation End Products (Rage), Jing Xue
Structural Biology Of The Receptor For Advanced Glycation End Products (Rage), Jing Xue
Legacy Theses & Dissertations (2009 - 2024)
The receptor for advanced glycated end products (RAGE), due to its location in the major histocompatibility complex class III (MHC III) region, suggests its involvement in immune responses. Because RAGE has been linked to complications of diabetes and chronic inflammation, the severity of Alzheimer's disease and cancer, it's significant to understanding the biological mechanism of signal transduction of RAGE.
New Tools To Study Amyloid Fibrils And Intrinsically Disordered Proteins In Vitro And In Vivo, Jacqueline D. Washington
New Tools To Study Amyloid Fibrils And Intrinsically Disordered Proteins In Vitro And In Vivo, Jacqueline D. Washington
Legacy Theses & Dissertations (2009 - 2024)
Amyloid fibrils are β-sheet-rich protein aggregates commonly found in the organs and tissues of patients with various amyloid-associated diseases. The structure of insulin fibrils was characterized by deep ultraviolet resonance Raman and Nuclear Magnetic Resonance spectroscopy combined with hydrogen-deuterium exchange. Our new approach of combining NMR and Raman spectroscopy with molecular dynamic simulations for characterizing amyloid fibrils provided exclusive knowledge about fibril structure at amino acid residue resolution.
Y-Family Dna Polymerases : Mechanism Of Single-Base Deletion And Effect Of Pcna Interaction, Yifeng Wu
Y-Family Dna Polymerases : Mechanism Of Single-Base Deletion And Effect Of Pcna Interaction, Yifeng Wu
Legacy Theses & Dissertations (2009 - 2024)
Translesional synthesis (TLS) by specialized Y-family DNA polymerases is a DNA damage tolerance pathway to bypass DNA lesions that have not been repaired by other DNA repair mechanisms. Despite their valuable lesion bypass ability, the Y-family DNA polymerases display a much lower fidelity upon replicating undamaged DNA. Their activity therefore needs to be well regulated in the cell. In our first project, we examined how an archaeal Y-family DNA polymerase, Dpo4, makes single-base deletions during replication. Dpo4 belongs to the DinB subfamily which is known to make single-base deletions. Although previous studies suggested that it uses a dNTP-stabilized misalignment mechanism, …
The Sxrna Platform : Biophysical Characterization Of Trans-Acting Rna Switches For Gene Expression Control, Christine Bazinet
The Sxrna Platform : Biophysical Characterization Of Trans-Acting Rna Switches For Gene Expression Control, Christine Bazinet
Legacy Theses & Dissertations (2009 - 2024)
In the past decade, microRNAs (miRNAs) have become a hot topic in biochemical research. These very short ~ 22 nucleotide strands of RNA have been recognized as a functional RNA group and found to play a key role in mediating gene regulation along with RNA-binding proteins (RBPs). For example, by binding to the histone stem-loop (HSL) region of the target mRNA, normally in the 3'- untranslated region (UTR), gene expression can either be activated or deactivated for up or down regulation of the gene product. The majority of miRNAs have been found to down regulate gene expression upon binding to …
2'-O-Methyl Substitutions In The Yeast Telomerase Pseudoknot And Their Effects On Telomerase Activity, Katelyn Mae Jasper
2'-O-Methyl Substitutions In The Yeast Telomerase Pseudoknot And Their Effects On Telomerase Activity, Katelyn Mae Jasper
Legacy Theses & Dissertations (2009 - 2024)
Telomerase is a ribonucleoprotein (RNP) complex that synthesizes telomeric repeats at the ends of linear chromosomes to form the DNA–protein complexes known as telomeres. Telomeres protect the ends of chromosomes from degradation during replication due to the end-replication problem. When replication occurs, gaps are created at the beginning of the lagging and leading strands that result in the loss of a small amount of DNA at every replication cycle. By adding thousands of copies of telomeric repeats, the repeats are lost in the replication process and not precious genetic information. The telomerase RNA varies drastically among different species both in …
(S)-Trifluoroselenomethionine : A New Non-Natural Amino Acid With Enhanced Methioninase-Induced Cytotoxicity Toward Human Colon Cancer Cells, Stephene Nathele Lodge
(S)-Trifluoroselenomethionine : A New Non-Natural Amino Acid With Enhanced Methioninase-Induced Cytotoxicity Toward Human Colon Cancer Cells, Stephene Nathele Lodge
Legacy Theses & Dissertations (2009 - 2024)
Abstract
Ultraviolet Resonance Raman Spectroscopy For Characterization Of Rna Structure And Thermodynamics, Joseph Dustin Handen
Ultraviolet Resonance Raman Spectroscopy For Characterization Of Rna Structure And Thermodynamics, Joseph Dustin Handen
Legacy Theses & Dissertations (2009 - 2024)
Raman spectroscopy is a technique well suited for the study of biological molecules such as proteins, peptides, or RNAs. By utilizing an ultraviolet resonance Raman (UVRR) instrument, we are afforded a tremendous increase in sensitivity because of resonance enhancement. Additionally, this technique does not require any labeling. Moreover, this technique is better suited for studying biological systems than infrared absorption due to reduced interference from water. In this study, we apply techniques we have developed for the study of protein and peptide fibrillation to a model RNA homodimer. We demonstrate that UVRR spectroscopy is uniquely suited to monitoring the free …
Structural And Functional Characterization Of Dna Polymerase Ss Mutator Mutants, Sneha Rangarajan
Structural And Functional Characterization Of Dna Polymerase Ss Mutator Mutants, Sneha Rangarajan
Legacy Theses & Dissertations (2009 - 2024)
DNA Polymerase ß (polß) plays a crucial role in repairing damaged DNA in a process called Base Excision Repair (BER). BER is a major pathway of DNA repair, making this system absolutely vital for maintaining genomic integrity. Recent studies estimate 30% of human tumors to contain polß variants that led us to believe that there is a high degree of association between mutations in polß and cancer. In this pathway, after recognition and excision of the damaged base, the DNA is cleaved at an apurinic (AP) site by AP endonuclease leaving behind a 3' hydroxyl and 5' deoxyribose phosphate (dRP). …