Evolutionary conservation of a unique amino acid sequence in human DICER protein essential for binding to Argonaute family proteins
Copyright policy )Evolutionary conservation of a unique amino acid sequence in human DICER protein essential for binding to Argonaute family proteins
The Argonaute family and DICER proteins are major key proteins involved in the RNA-mediated gene silencing mechanism of various species. In this mechanism, cleavage of messenger RNAs (mRNA) or suppression of mRNA translation takes place via small RNAs that are uniquely processed by DICER. Previously, we demonstrated that human Argonaute family proteins bind to DICER. In this study, we identified a unique amino acid sequence of 127 amino acids in the RIBOc-A domain of human DICER protein as a "binding site" to Argonaute proteins. Comparative genomics analysis revealed that this unique amino acid sequence is highly conserved in the vertebrates, but not found in the non-vertebrate species. Significant difference in the RIBOc-A domain of DICER protein between vertebrate and non-vertebrate species may help exploring the functional complexity in the RNA-mediated gene silencing mechanism.
- Keio University Japan
Ribonuclease III, Binding Sites, Models, Genetic, Sequence Homology, Amino Acid, Genetic Vectors, Molecular Sequence Data, Genomics, Models, Biological, Evolution, Molecular, Argonaute Proteins, Humans, Amino Acid Sequence, Gene Silencing, Eukaryotic Initiation Factors, Gene Deletion, Phylogeny
Ribonuclease III, Binding Sites, Models, Genetic, Sequence Homology, Amino Acid, Genetic Vectors, Molecular Sequence Data, Genomics, Models, Biological, Evolution, Molecular, Argonaute Proteins, Humans, Amino Acid Sequence, Gene Silencing, Eukaryotic Initiation Factors, Gene Deletion, Phylogeny
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