In eukaryotes, U1 small nuclear ribonucleoprotein (snRNP) forms spliceosomes in equal stoichiometry with U2, U4, U5 and U6 snRNPs; however, its abundance in human far exceeds that of the other snRNPs.

U4/U6.U5 tri-snRNP is a 1.5-megadalton pre-assembled spliceosomal complex comprising U5 small nuclear RNA (snRNA), extensively base-paired U4/U6 snRNAs and more than 30 proteins, including the key ...

The spliceosome in eukaryotes removes non-coding intronic sequences and ligates exons to produce functional messenger ribonucleic acids (mRNA) that code for proteins. However, while numerous studies ...

In human cells, only a small proportion of the information written in genes is used to produce proteins. How does the cell select this information? A large molecular machine called the spliceosome ...

Human genes that encode proteins often contain non-coding segments known as introns. Removing introns is crucial for the proper expression of genetic information. Understanding how our cells ...

Scientists have created a model to study the role of RNA splicing defects in Alzheimer's disease, revealing degeneration and toxicity caused by neuron hyperexcitability. Researchers have puzzled over ...

In multicellular organisms, the earliest products of transcription, called pre-mRNAs, undergo a molecular makeover before shipping out to the cytoplasm, where the modified mRNAs spell out the recipe ...

Images of the model plant Arabidopsis thaliana. In the plant on the right, the activity of the protein-RNA complex "U1 snRNP" was artificially reduced. The plants are 21 days old. Plants have a ...