deoxyribonucleic acid

deoxyribonucleic acid
Name	Deoxyribonucleic acid
Caption	Molecular model of the double helix
Formula	(C5H10O4N)n
Molar mass	variable

Contents

deoxyribonucleic acid is the hereditary macromolecule that encodes genetic information in most Mendelian organisms, underpinning the biology of Darwinian evolution and enabling biotechnology advances credited to institutes such as the Sanger Institute, Cold Spring Harbor Laboratory, and Broad Institute. Discovered through contributions by figures associated with institutions like University of Cambridge, King's College London, Harvard University, and University of Chicago, it has become central to fields influenced by awards such as the Nobel Prize and projects like the Human Genome Project and initiatives at National Institutes of Health.

Structure and Chemical Properties

The molecular architecture of nucleic acid is a polymer composed of nucleotides studied by researchers at Max Planck Society, Royal Society, and Pacific Northwest National Laboratory, characterized by a sugar–phosphate backbone and nitrogenous bases whose pairing informed models at University of Oxford, University of Cambridge, and King's College London. X‑ray diffraction experiments led by groups linked to Rosalind Franklin and Maurice Wilkins informed the double helix concept contemporaneous with analyses by scholars at MRC Laboratory of Molecular Biology and Columbia University. Chemical investigations by laboratories at ETH Zurich, Massachusetts Institute of Technology, and California Institute of Technology detailed base composition involving adenine, thymine, guanine, and cytosine and phosphodiester linkages, with thermodynamic parameters measured in studies associated with National Academy of Sciences and Royal Institution. Structural variants such as A‑form, B‑form, and Z‑form were characterized in work connected to Max Perutz and Linus Pauling, while synthetic analogues emerged from programs at DuPont and Genentech.

Enzymatic processes that duplicate the molecule were elucidated in contexts involving laboratories at Stanford University, University of California, Berkeley, and Yale University, identifying proteins like DNA polymerases, helicases, primases, and ligases whose discovery involved investigators honored by the Lasker Award and Copley Medal. Replication mechanisms such as semiconservative replication were validated by experiments at Cold Spring Harbor Laboratory and by teams affiliated with University of Cambridge and Princeton University. Repair pathways—base excision repair, nucleotide excision repair, mismatch repair, and double‑strand break repair—were characterized by researchers at Max Planck Institute, Wellcome Trust, and Fred Hutchinson Cancer Research Center, connecting clinical implications studied at Memorial Sloan Kettering Cancer Center and Johns Hopkins University. Regulatory complexes such as the telomerase holoenzyme and checkpoints revealed interactions with proteins studied at Salk Institute, Institute Pasteur, and Dana‑Farber Cancer Institute.

The molecule serves as the template for transcription and translation processes described in textbooks used at Oxford University Press and taught across departments at University of California, San Francisco, University of Michigan, and University College London, where messenger RNA, transfer RNA, and ribosomal RNA mediate protein synthesis. Concepts of the genetic code and gene regulation were advanced by scientists associated with Max Delbrück, Francis Crick, and James Watson and institutional programs at Salk Institute and Whitehead Institute. Functional genomics projects at Broad Institute, European Molecular Biology Laboratory, and Wellcome Trust Sanger Institute link sequence to phenotype, with clinical genetics applied in settings like Mayo Clinic, Cleveland Clinic, and Mount Sinai Health System to interpret variants under guidelines influenced by organizations such as American College of Medical Genetics and Genomics.

Within nuclei of eukaryotic cells studied at Harvard Medical School and Imperial College London, the molecule is packaged into chromatin with histones and higher‑order structures whose dynamics were elucidated by teams at European Bioinformatics Institute, EMBL‑EBI, and Stanford School of Medicine. In prokaryotic systems researched at Max Planck Institute for Biology, molecules often exist as circular chromosomes and plasmids characterized in projects at NIH, EPA, and Agilent Technologies. Chromosomal aberrations observed by cytogeneticists at Johns Hopkins University and University of Pennsylvania connect to syndromes treated in clinics like Boston Children's Hospital and studies funded by National Cancer Institute. Genome architecture mapping efforts at Lawrence Berkeley National Laboratory, Argonne National Laboratory, and Brookhaven National Laboratory revealed topologically associating domains and long‑range interactions.

Mendelian heredity rediscovered by scientists at University of Vienna and integrated into modern synthesis frameworks by scholars at University of Chicago and University of California, Berkeley situates the molecule at the core of phylogenetics practiced at Smithsonian Institution and Natural History Museum, London. Molecular evolution studies at Max Planck Institute for Evolutionary Anthropology, Smithsonian Tropical Research Institute, and Royal Botanic Gardens, Kew use sequence variation to infer population history, speciation events, and adaptation, with notable applications in paleogenomics pursued by teams at University of Copenhagen and University of York. Evolutionary medicine approaches employed at Harvard T.H. Chan School of Public Health and Columbia University Mailman School of Public Health link genetic variation to disease susceptibilities examined in cohorts from institutions like Framingham Heart Study and trials coordinated by World Health Organization.

Applied uses emerged through collaborations between industry and academia including Genentech, Amgen, Illumina, Thermo Fisher Scientific, and public projects such as the Human Genome Project and private initiatives like Celera Genomics. Technologies including PCR developed by researchers at Cetus Corporation and sequencing platforms commercialized by Illumina and Pacific Biosciences enabled clinical diagnostics at Mayo Clinic and personalized medicine programs at MD Anderson Cancer Center and Roche. Forensics units at FBI laboratories and legal cases in courts like the United States District Court for the District of Columbia use molecular evidence, while conservation genetics performed by World Wildlife Fund and IUCN informs biodiversity management. Ethical, legal, and social issues are debated in forums at United Nations, European Commission, and professional societies such as the National Academy of Medicine and American Society of Human Genetics.

Category:Biomolecules