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Ribonucleic acid (RNA) is a polymeric molecule that is essential for most biological functions, either by performing the function itself or by forming a template for the production of proteins. RNA and deoxyribonucleic acid (DNA) are nucleic acids. The nucleic acids constitute one of the four major macromolecules essential for all known forms of life. RNA is assembled as a chain of nucleotides. Cellular organisms use messenger RNA (mRNA) to convey genetic information that directs synthesis of specific proteins. Many viruses encode their genetic information using an RNA genome.
The RNA world is a hypothetical stage in the evolutionary history of life on Earth, in which self-replicating RNA molecules proliferated before the evolution of DNA and proteins. The term also refers to the hypothesis that posits the existence of this stage.
Ribozymes are RNA molecules that have the ability to catalyze specific biochemical reactions, including RNA splicing in gene expression, similar to the action of protein enzymes. The 1982 discovery of ribozymes demonstrated that RNA can be both genetic material and a biological catalyst, and contributed to the RNA world hypothesis, which suggests that RNA may have been important in the evolution of prebiotic self-replicating systems.
In molecular biology, a riboswitch is a regulatory segment of a messenger RNA molecule that binds a small molecule, resulting in a change in production of the proteins encoded by the mRNA. Thus, an mRNA that contains a riboswitch is directly involved in regulating its own activity, in response to the concentrations of its effector molecule. The discovery that modern organisms use RNA to bind small molecules, and discriminate against closely related analogs, expanded the known natural capabilities of RNA beyond its ability to code for proteins, catalyze reactions, or to bind other RNA or protein macromolecules.
Thomas Robert Cech is an American chemist who shared the 1989 Nobel Prize in Chemistry with Sidney Altman, for their discovery of the catalytic properties of RNA. Cech discovered that RNA could itself cut strands of RNA, suggesting that life might have started as RNA. He found that RNA can not only transmit instructions, but also that it can speed up the necessary reactions. He also studied telomeres, and his lab discovered an enzyme, TERT, which is part of the process of restoring telomeres after they are shortened during cell division. As president of Howard Hughes Medical Institute, he promoted science education, and he teaches an undergraduate chemistry course at the University of Colorado.
Robert G. Roeder is an American biochemist. He is known as a pioneer scientist in eukaryotic transcription. He discovered three distinct nuclear RNA polymerases in 1969 and characterized many proteins involved in the regulation of transcription, including basic transcription factors and the first mammalian gene-specific activator over five decades of research. He is the recipient of the Gairdner Foundation International Award in 2000, the Albert Lasker Award for Basic Medical Research in 2003, and the Kyoto Prize in 2021. He currently serves as Arnold and Mabel Beckman Professor and Head of the Laboratory of Biochemical and Molecular Biology at The Rockefeller University.
Deoxyribozymes, also called DNA enzymes, DNAzymes, or catalytic DNA, are DNA oligonucleotides that are capable of performing a specific chemical reaction, often but not always catalytic. This is similar to the action of other biological enzymes, such as proteins or ribozymes . However, in contrast to the abundance of protein enzymes in biological systems and the discovery of biological ribozymes in the 1980s, there is only little evidence for naturally occurring deoxyribozymes. Deoxyribozymes should not be confused with DNA aptamers which are oligonucleotides that selectively bind a target ligand, but do not catalyze a subsequent chemical reaction.
Gerald Francis "Jerry" Joyce is president and professor at the Salk Institute for Biological Studies and was previously the director of the Genomics Institute of the Novartis Research Foundation. He is best known for his work on in vitro evolution, for the discovery of the first DNA enzyme (deoxyribozyme), for his work in discovering potential RNA world ribozymes, and more in general for his work on the origin of life.
Joan Elaine Argetsinger Steitz is Sterling Professor of Molecular Biophysics and Biochemistry at Yale University and Investigator at the Howard Hughes Medical Institute. She is known for her discoveries involving RNA, including ground-breaking insights into how ribosomes interact with messenger RNA by complementary base pairing and that introns are spliced by small nuclear ribonucleic proteins (snRNPs), which occur in eukaryotes. In September 2018, Steitz won the Lasker-Koshland Award for Special Achievement in Medical Science. The Lasker award is often referred to as the 'American Nobel' because 87 of the former recipients have gone on to win Nobel prizes.
Carolyn Widney Greider is an American molecular biologist and Nobel laureate. She joined the University of California, Santa Cruz as a Distinguished Professor in the department of molecular, cell, and developmental biology in October 2020.
Cobalamin riboswitch is a cis-regulatory element which is widely distributed in 5' untranslated regions of vitamin B12 (Cobalamin) related genes in bacteria.
The NAS Award in Molecular Biology is awarded by the U.S. National Academy of Sciences "for recent notable discovery in molecular biology by a young scientist who is a citizen of the United States." It has been awarded annually since its inception in 1962.
Scott A. Strobel is the provost of Yale University as well as a professor of molecular biophysics and biochemistry. He was the vice provost for Science Initiatives and vice president for West Campus Planning & Program Development. An educator and researcher, he has led a number of Yale initiatives over the past two decades. Strobel was appointed as Yale's provost in 2020.
Daniel Herschlag is an American biochemist and Professor of Biochemistry at the Stanford University School of Medicine. His research uses an interdisciplinary approach to advance our understanding of the fundamental behavior of RNA and proteins. He is well known for his application of rigorous kinetic and mechanistic approaches to RNA and protein systems.
Tobias C. Walther is the chair of the cell biology program at Sloan Kettering Institute in New York City and a professor at Weill Cornell School of Medicine, where he co-directs the Farese and Walther lab. He has been a Howard Hughes Medical Institute investigator since 2015. His primary responsibilities are to provide leadership in research and teaching in the scientific fields of metabolism, membrane biology and lipids.
Evgeny Nudler is an American biochemist, currently the Julie Wilson Anderson Professor at New York University School of Medicine. He is an investigator with the Howard Hughes Medical Institute and is best known for his pioneering work on the molecular mechanisms of transcription elongation and termination, mechanisms of cellular adaptation to genotoxic and proteotoxic stress, as well as his role in the discovery of riboswitches and RNA polymerase backtracking.
Catherine (Cathy) Drennan is an American biochemist and crystallographer. She is the John and Dorothy Wilson Professor of Biochemistry professor at the Massachusetts Institute of Technology and a professor at the Howard Hughes Medical Institute.
Antonio Jesus Giraldez is a Spanish developmental biologist and RNA researcher at Yale University School of Medicine, where he serves as chair of the department of genetics and Fergus F. Wallace Professor of Genetics. He is also affiliated with the Yale Cancer Center and the Yale Stem Cell Center.
Anna Marie Pyle is an American academic who is a Sterling Professor of Molecular, Cellular & Developmental Biology and a Professor of Chemistry at Yale University. and an Investigator for Howard Hughes Medical Institute. Pyle is the president of the RNA Society, the vice-chair of the Science and Technology Steering Committee at Brookhaven National Laboratory, and previously she served as chair of the Macromolecular Structure and Function A Study Section at the National Institutes of Health.
Samara Reck-Peterson is an American cell biologist and biophysicist. She is a Professor of Cellular and Molecular Medicine and Cell and Developmental Biology at the University of California, San Diego and an Investigator of the Howard Hughes Medical Institute. She is known for her contributions to our understanding of how dynein, an exceptionally large motor protein that moves many intracellular cargos, works and is regulated. She developed one of the first systems to produce recombinant dynein and discovered that, unlike other cytoskeletal motors, dynein can take a wide variety of step sizes, forward and back and even sideways. She lives in San Diego, California.
References
- ↑ "Ronald Breaker". Arnold and Mabel Beckman Foundation. Retrieved 1 August 2018.
- 1 2 Yarnell, Amanda (23 March 2004). "C&EN: AHA! MOMENTS - RONALD R. BREAKER". pubsapp.acs.org. C&EN. Retrieved 3 June 2022.
- ↑ Breaker, RR; Joyce, GF (December 1994). "A DNA enzyme that cleaves RNA". Chemistry & Biology. 1 (4): 223–9. doi:10.1016/1074-5521(94)90014-0. PMID 9383394.
- ↑ Nahvi, A; Sudarsan, N; Ebert, MS; Zou, X; Brown, KL; Breaker, RR (September 2002). "Genetic control by a metabolite binding mRNA". Chemistry & Biology. 9 (9): 1043. doi: 10.1016/s1074-5521(02)00224-7 . PMID 12323379.
- ↑ Parker, Nicole (1 March 2016). "Breaker 'vastly expanded our appreciation of the versatility of noncoding RNAs in biology'". www.asbmb.org. ASBMB. ASBMB.
- ↑ Stone, Melissa (25 February 2010). "Riboswitches: A Molecular Archeological Discovery – Yale Scientific Magazine". www.yalescientific.org. yale scientific.
- ↑ "Ronald R. Breaker". HHMI. Retrieved 14 February 2013.
- ↑ "Ronald Breaker, Ph.D."
