Radical SAM (original) (raw)

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Radical SAM is a designation for a superfamily of enzymes that use a [4Fe-4S]+ cluster to reductively cleave S-adenosyl-L-methionine (SAM) to generate a radical, usually a 5′-deoxyadenosyl radical (5'-dAdo), as a critical intermediate. These enzymes utilize this radical intermediate to perform diverse transformations, often to functionalize unactivated C-H bonds. Radical SAM enzymes are involved in cofactor biosynthesis, enzyme activation, peptide modification, post-transcriptional and post-translational modifications, metalloprotein cluster formation, tRNA modification, lipid metabolism, biosynthesis of antibiotics and natural products etc. The vast majority of known radical SAM enzymes belong to the , and have a cysteine-rich motif that matches or resembles CxxxCxxC. rSAMs comprise the l

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dbo:abstract Le terme radical SAM désigne une superfamille de métalloenzymes qui utilisent un agrégat [4Fe-4S]+ pour cliver de manière réductrice la S-adénosyl-L-méthionine (SAM) afin de générer un radical, généralement un radical 5′-désoxyadénosyle. Cet intermédiaire catalytique radicalaire permet d'effectuer des transformations inhabituelles (du point de vue de la chimie organique) très variées, souvent pour fonctionnaliser des liaisons C-H. Les enzymes Radical SAM sont impliquées dans la biosynthèse des cofacteurs, l'activation des enzymes, la modification des peptides, les modifications post-transcriptionnelles et post-traductionnelles, la modification des ARNt, le métabolisme des lipides, la biosynthèse des antibiotiques et des produits naturels, etc. La grande majorité de ces enzymes se reconnaissent par un motif riche en cystéine de type CxxxCxxC. (fr) Radical SAM is a designation for a superfamily of enzymes that use a [4Fe-4S]+ cluster to reductively cleave S-adenosyl-L-methionine (SAM) to generate a radical, usually a 5′-deoxyadenosyl radical (5'-dAdo), as a critical intermediate. These enzymes utilize this radical intermediate to perform diverse transformations, often to functionalize unactivated C-H bonds. Radical SAM enzymes are involved in cofactor biosynthesis, enzyme activation, peptide modification, post-transcriptional and post-translational modifications, metalloprotein cluster formation, tRNA modification, lipid metabolism, biosynthesis of antibiotics and natural products etc. The vast majority of known radical SAM enzymes belong to the , and have a cysteine-rich motif that matches or resembles CxxxCxxC. rSAMs comprise the largest superfamily of metal-containing enzymes. (en)
dbo:symbol Radical_SAM
dbo:thumbnail wiki-commons:Special:FilePath/RadicalSAMcoredomain_front_back.png?width=300
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rdfs:comment Radical SAM is a designation for a superfamily of enzymes that use a [4Fe-4S]+ cluster to reductively cleave S-adenosyl-L-methionine (SAM) to generate a radical, usually a 5′-deoxyadenosyl radical (5'-dAdo), as a critical intermediate. These enzymes utilize this radical intermediate to perform diverse transformations, often to functionalize unactivated C-H bonds. Radical SAM enzymes are involved in cofactor biosynthesis, enzyme activation, peptide modification, post-transcriptional and post-translational modifications, metalloprotein cluster formation, tRNA modification, lipid metabolism, biosynthesis of antibiotics and natural products etc. The vast majority of known radical SAM enzymes belong to the , and have a cysteine-rich motif that matches or resembles CxxxCxxC. rSAMs comprise the l (en) Le terme radical SAM désigne une superfamille de métalloenzymes qui utilisent un agrégat [4Fe-4S]+ pour cliver de manière réductrice la S-adénosyl-L-méthionine (SAM) afin de générer un radical, généralement un radical 5′-désoxyadénosyle. Cet intermédiaire catalytique radicalaire permet d'effectuer des transformations inhabituelles (du point de vue de la chimie organique) très variées, souvent pour fonctionnaliser des liaisons C-H. Les enzymes Radical SAM sont impliquées dans la biosynthèse des cofacteurs, l'activation des enzymes, la modification des peptides, les modifications post-transcriptionnelles et post-traductionnelles, la modification des ARNt, le métabolisme des lipides, la biosynthèse des antibiotiques et des produits naturels, etc. La grande majorité de ces enzymes se reconnais (fr)
rdfs:label Radical SAM (fr) Radical SAM (en)
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