Molecular graphic of LAC repressor binding to DNA
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Molecular graphic of LAC repressor binding to DNA
LAC repressor binding to DNA. Computer graphic of a lac repressor molecule (pink) interacting with genes on DNA that control lactose metabolism in Escherichia coli bacteria. The lac (lactose) repressor molecule is a protein made of four units and two arms. Lac arms are seen binding to two of three gene sites on a spiral DNA (Deoxyribonucleic acid) molecule. The bound DNA forms a repression loop, trapping and silencing a blue CAP activator protein. Switching off these genes occurs when lactose levels in E.coli are low. The genes code for an enzyme which metabolizes lactose. This gene regulation may help the design of gene therapies
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 6388057
© MITCHELL LEWIS, UNIVERSITY OF PENNSYLVANIA MEDICAL CENTER/SCIENCE PHOTO LIBRARY
Bio Technology Double Helix Escherichia Coli Gene Repressor Genetic Engineering Lac Repressor Molecular Graphic Operon Repressor Bio Chemistry Genetics Molecular Model
EDITORS COMMENTS
This print showcases a mesmerizing molecular graphic of the LAC repressor binding to DNA. In this computer-generated image, we witness the intricate interaction between a pink lac repressor molecule and the genes responsible for lactose metabolism in Escherichia coli bacteria. The lac repressor molecule, composed of four units and two arms, can be observed as it binds to two out of three gene sites on a spiral DNA molecule. This binding creates a repression loop that effectively traps and silences a blue CAP activator protein. The crucial process of switching off these genes occurs when E. coli experiences low levels of lactose. The genes being regulated here code for an enzyme that plays a vital role in metabolizing lactose. Understanding this complex gene regulation mechanism holds immense potential for advancements in genetic engineering and biotechnology, particularly in designing effective gene therapies. This extraordinary visual representation sheds light on the intricate world of biochemistry and genetics. It highlights the delicate dance between molecules within living organisms, offering valuable insights into how biological systems function at their core. Science Photo Library has once again captured an awe-inspiring moment from the realm of science, providing us with both aesthetic pleasure and scientific enlightenment through this stunning photograph print.
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