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pubmed-article:11710021pubmed:dateCreated2001-11-16lld:pubmed
pubmed-article:11710021pubmed:abstractTextA new macromolecular catalyst, which is composed of nonnatural ribonucleotide, was synthesized by the in vitro selection (SELEX) method. A pool of RNAs consisting of random sequences was obtained by transcription from a pool of synthetic random-sequence DNAs in the presence of 2'-aminocytidine triphosphate (2'-amino-CTP) instead of CTP. The pool was incubated with N-methylmesoporphyrin-immobilized gel; bound nonnatural RNAs were then collected and amplified by reverse-transcription following the polymerase chain reaction. The amplified DNAs were again transcribed in the presence of 2'-amino-CTP and applied to the gel. This selection process was repeated 10 times. The selected RNAs were cloned and sequenced. The RNAs not only bound to the ligand, N-methylmesoporphyrin but also catalyzed the metalation reaction of porphyrin.lld:pubmed
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pubmed-article:11710021pubmed:dateRevised2009-11-19lld:pubmed
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pubmed-article:11710021pubmed:articleTitleIn vitro selection of nonnatural ribozyme-catalyzing porphyrin metalation.lld:pubmed
pubmed-article:11710021pubmed:affiliationDepartment of Biological Science and Technology, Faculty of Engineering, University of Tokushima, Tokushima 770-8506, Japan.lld:pubmed
pubmed-article:11710021pubmed:publicationTypeJournal Articlelld:pubmed
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