Illustration of a SAM(s-adenosyl methionine)-dependent methyltransferase ribozyme. Ribozymes are RNA (ribonucleic acid) molecules that catalyse certain biochemical reactions. Methyltransferase ribozymes transfer methyl groups to RNA nucleotides, a process known as methylation. RNA methylation can activate or repress the transcription of genes without changing the actual genetic sequence and so is an example of an epigenetic change.

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Photo credit: © FRANCISCO J. ENGUITA/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: -, -adenosyl, 3d, acid, artwork, biochemical, biochemistry, biological, biology, cofactor, dimensional, epigenetic, epigenetics, expression, gene, genetics, group, illustration, methionine, methyl, methylation, methyltransferase, model, modification, molecular, molecule, regulation, ribonucleic, ribozyme, rna, sam-dependent, structure