intron
Quick Summary
An intron is a segment of a nucleic acid, such as DNA or RNA, that does not contain information for protein synthesis. In eukaryotic genes, coding sequences, called exons, are often separated by noncoding regions known as introns. After transcription, these introns are removed, and the exons are joined together in a process called RNA splicing. This splicing is carried out by a complex molecular machinery called a spliceosome. The discovery of introns and exons was made independently in the 1970s by Richard J. Roberts and Phillip A. Sharp.12
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Andrew Z. Fire…for his independent discovery of introns—long sections of DNA that do not encode proteins but are located within genes. Fire received a Ph.D. in biology from MIT in 1983 and then went to Cambridge, Eng., joining the Medical Research Council (MRC) Laboratory of Molecular Biology. At Cambridge, Fire worked with…
Read More…for his independent discovery of introns—long sections of DNA that do not encode proteins but are located within genes. Fire received a Ph.D. in biology from MIT in 1983 and then went to Cambridge, Eng., joining the Medical Research Council (MRC) Laboratory of Molecular Biology. At Cambridge, Fire worked with…
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Richard J. Roberts…the noncoding ones are called introns. A research team working under Sharp at the Massachusetts Institute of Technology produced the same finding that same year. Previously, based on studies of bacterial DNA, biologists believed that genes consisted of unbroken stretches of DNA, all of which encoded protein structure. It has…
Read More…the noncoding ones are called introns. A research team working under Sharp at the Massachusetts Institute of Technology produced the same finding that same year. Previously, based on studies of bacterial DNA, biologists believed that genes consisted of unbroken stretches of DNA, all of which encoded protein structure. It has…
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Phillip A. Sharp…stretches of DNA, now called introns, that did not contain genetic information. At the same time, a team working independently under Roberts came up with the same finding. Previously biologists had believed that genes were continuous stretches of DNA that served as direct templates for mRNA in the assembly of…
Read More…stretches of DNA, now called introns, that did not contain genetic information. At the same time, a team working independently under Roberts came up with the same finding. Previously biologists had believed that genes were continuous stretches of DNA that served as direct templates for mRNA in the assembly of…
Read More