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The discovery of penicillin ushered in a new age of antibiotics derived from microorganisms. Penicillin is an antibiotic isolated from growing Penicillium mold in a fermenter. The mold is grown in a liquid culture containing sugar and other nutrients including a source of nitrogen. As the mold grows, it uses up the sugar and starts to make ...
Penicillium chrysogenum is of major medical and historical importance as the original and present-day industrial source of the antibiotic penicillin. The species was considered asexual for more than 100 years despite concerted efforts to induce sexual reproduction.
The principal commercial strain of Penicillium chrysogenum (the Peoria strain) produces penicillin G as the principal component when corn steep liquor is used as the culture medium. [8] When phenoxyethanol or phenoxyacetic acid are added to the culture medium, the mould produces penicillin V as the main penicillin instead.
Almecillin , [1] also known as penicillin O, is a penicillin that is similar in antibiotic action to penicillin G. It is obtained by isolation from Penicillium chrysogenum . [ 2 ]
"The isopenicillin-N acyltransferase of Penicillium chrysogenum has isopenicillin-N amidohydrolase, 6-aminopenicillanic acid acyltransferase and penicillin amidase activities, all of which are encoded by the single penDE gene". European Journal of Biochemistry. 215 (2): 323–332. doi: 10.1111/j.1432-1033.1993.tb18038.x. ISSN 0014-2956
In 1931, Thom re-examined different Penicillium including that of Fleming's specimen. He came to a confusing conclusion, stating, "Ad. 35 [Fleming's specimen] is P. notatum WESTLING. This is a member of the P. chrysogenum series with smaller conidia than P. chrysogenum itself."
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For the discovery of penicillin from this species Alexander Fleming shared the Nobel Prize in Physiology or Medicine in 1945. [1] The original penicillin-producing type has been variously identified as Penicillium rubrum, P. notatum, and P. chrysogenum among others, but genomic comparison and phylogenetic analysis in 2011 resolved that it is P ...
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