| Journal Articles: 15 results |
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A-DNA and B-DNA: Comparing Their Historical X-ray Fiber Diffraction Images Amand A. Lucas
This paper provides a comparative explanation of the structural content of the diffraction diagrams of A-DNA and B-DNA that facilitated the discovery of the double-helical structure of DNA by Watson and Crick in 1953. This analysis is supported a method that simulates both A-DNA and B-DNA X-ray images optically.
Lucas, Amand A. J. Chem. Educ. 2008, 85, 737.
Biophysical Chemistry |
Conformational Analysis |
Crystals / Crystallography |
X-ray Crystallography |
Nucleic Acids / DNA / RNA
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Molecular Models of DNA William F. Coleman
The Featured Molecules this month are components of DNA and include purine and pyrimidine;the four corresponding deoxyribonucleosides and deoxyribonucleotides; a two-base-pair fragment showing the AT and GC hydrogen-bonded complements; several small 24-base-pair DNA fragmentspolyAT, polyGC; and a random array of bases.
Coleman, William F. J. Chem. Educ. 2007, 84, 809.
Molecular Modeling |
Molecular Properties / Structure
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Using Physical Models of Biomolecular Structures To Teach Concepts of Biochemical Structure and Structure Depiction in the Introductory Chemistry Laboratory Gordon A. Bain, John Yi, Mithra Beikmohamadi, Timothy M. Herman, and Michael A. Patrick
Custom-made physical models of alpha-helices and beta-sheets, the zinc finger moiety, beta-globin, and green fluorescent protein are used to introduce students in first-year chemistry to the primary, secondary, and tertiary structure of proteins.
Bain, Gordon A.; Yi, John; Beikmohamadi, Mithra; Herman, Timothy M.; Patrick, Michael A. J. Chem. Educ. 2006, 83, 1322.
Amino Acids |
Proteins / Peptides |
Molecular Modeling |
Molecular Properties / Structure |
Nucleic Acids / DNA / RNA
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A Unique Demonstration Model of DNA Jonathan P. L. Cox
Describes a physical demonstration model of DNA for the classroom. The model comprises two types of building blocks that can be put together rapidly to produce an abstract structure that portrays several of the gross architectural features of idealized B-DNA.
Cox, Jonathan P. L. J. Chem. Educ. 2006, 83, 1319.
Molecular Biology |
Molecular Properties / Structure |
Student-Centered Learning |
Nucleic Acids / DNA / RNA
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Molecular Handshake: Recognition through Weak Noncovalent Interactions Parvathi S. Murthy
This article traces the development of our thinking about molecular recognition through noncovalent interactions, highlights their salient features, and suggests ways for comprehensive education on this important concept.
Murthy, Parvathi S. J. Chem. Educ. 2006, 83, 1010.
Applications of Chemistry |
Biosignaling |
Membranes |
Molecular Recognition |
Noncovalent Interactions |
Chromatography |
Molecular Properties / Structure |
Polymerization |
Reactions
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DNA Profiling of the D1S80 Locus: A Forensic Analysis for the Undergraduate Biochemistry Laboratory D. Dewaine Jackson, Chad S. Abbey, and Dylan Nugent
Describes a laboratory exercise in DNA profiling that can be used to demonstrate four fundamental procedures: isolation of genomic DNA from human cells, use of the polymerase chain reaction to amplify DNA, separation of amplified DNAs on agarose and polyacrylamide gels, and quantitative analysis of data (while comparing two different gel separation techniques).
Jackson, D. Dewaine; Abbey, Chad S.; Nugent, Dylan. J. Chem. Educ. 2006, 83, 774.
Biological Cells |
Biotechnology |
Electrophoresis |
Forensic Chemistry |
Molecular Biology |
Quantitative Analysis |
Nucleic Acids / DNA / RNA
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A 3D Model of Double-Helical DNA Showing Variable Chemical Details Susan G. Cady
A 3D double-helical DNA model, made by placing beads on a wire and stringing beads through holes in plastic canvas, is described. Suggestions are given to enhance the basic helical frame to show the shapes and sizes of the nitrogenous base rings, 3' and 5' chain termini, and base pair hydrogen bonding. Students can incorporate random or real gene sequence data into their models.
Cady, Susan G. J. Chem. Educ. 2005, 82, 79.
Biotechnology |
Molecular Properties / Structure |
Molecular Modeling |
Nucleic Acids / DNA / RNA
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Exploring the Structure–Function Relationship of Macromolecules at the Undergraduate Level Belinda Pastrana-Rios
The undergraduate teaching initiatives discussed in this manuscript take advantage of a state-of-the-art visualization center devoted to teaching and research activities.
Pastrana-Rios, Belinda. J. Chem. Educ. 2004, 81, 837.
Molecular Properties / Structure |
Biophysical Chemistry |
Biotechnology
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Genomics: The Science and Technology Behind the Human Genome Project (by Charles R. Cantor and Cassandra L. Smith) reviewed by Martin J. Serra
This book is an outgrowth of a series of lectures given by one of the former heads (CRC) of the Human Genome Initiative. The book is designed to reach a wide audience, from biologists with little chemical or physical science background through engineers, computer scientists, and physicists with little current exposure to the chemical or biological principles of genetics.
Serra, Martin J. J. Chem. Educ. 2000, 77, 33.
Biotechnology |
Nucleic Acids / DNA / RNA
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Liver and Onions: DNA Extraction from Animal and Plant Tissues Karen J. Nordell, Anne-Marie L. Jackelen, S. Michael Condren, George C. Lisensky, and Arthur B. Ellis*
This activity, which allows students to extract DNA from plant and animal cells, serves as a spectacular example of the complexity of biochemical structure and function and fits well with a discussion of nucleic acids, hydrogen bonding, genetic coding, and heredity. DNA extraction can also be used in conjunction with a discussion of polymers and their properties.
Nordell, Karen J.; Jackelen, Anne-Marie L.; Condren, S. Michael; Lisensky, George C.; Ellis, Arthur B. J. Chem. Educ. 1999, 76, 400A.
Hydrogen Bonding |
Molecular Properties / Structure |
Nucleic Acids / DNA / RNA
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A Simple Demonstration of How Intermolecular Forces Make DNA Helical Michael F. Bruist
The usage of stacked identical boxes can be used to demonstrate the helical shape of DNA by the effect of intermolecular forces.
Bruist, Michael F. J. Chem. Educ. 1998, 75, 53.
Molecular Properties / Structure |
Hydrogen Bonding |
Noncovalent Interactions |
Molecular Modeling
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Strand polarity: Antiparallel molecular interactions in nucleic acids Davidson, Michael W.; Wilson, W. David
121. The illustrations in many biochemistry textbooks indicates a parallel polarity in DNA, but in truth DNA is antiparallel.
Davidson, Michael W.; Wilson, W. David J. Chem. Educ. 1975, 52, 323.
Molecular Properties / Structure
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Teaching organic stereochemistry Eliel, Ernest L.
Focusses on suggestions for the teaching of stereochemistry in general chemistry.
Eliel, Ernest L. J. Chem. Educ. 1964, 41, 73.
Molecular Properties / Structure |
Stereochemistry
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The geometry of giant molecules Price, Charles C.
The author examines a variety of specific examples of natural and synthetic polymer molecules and describes how their geometric molecular arrangements influence their properties.
Price, Charles C. J. Chem. Educ. 1959, 36, 160.
Molecular Properties / Structure |
Proteins / Peptides |
Carbohydrates
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Schematic models of biochemical polymers Blackwell, R. Quentin
Demonstrates the use of plastic necklace beads to represent polysaccharides, peptides and proteins, and nucleotides.
Blackwell, R. Quentin J. Chem. Educ. 1957, 34, 500.
Molecular Modeling |
Molecular Properties / Structure |
Proteins / Peptides |
Carbohydrates
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