Recombinant Human LSM1 protein

Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

LSM1 also known as Late Splicing Machinery 1 is a protein that plays a role in mRNA decapping and degradation. It is a core component of the 7-member LSM (Like Sm) complex. This protein is approximately 15 kDa in size and is mainly expressed in the cytoplasm. It functions by binding to the 3’ end of U6 snRNA and to the mRNA degradation machinery facilitating the removal of the 5’ cap structure from RNA molecules which is an essential step in the mRNA decay process.

Biological function summary

The LSM1 protein is involved in RNA processing and degradation. It forms part of the LSM1-7 complex a ring-like structure critical for the stability and function of mRNA decay pathways. This protein participates in various cellular processes by interacting with other components involved in RNA metabolism. Its activity impacts how cells regulate messenger RNA stability and turn-over therefore influencing gene expression post-transcriptionally.

Pathways

LSM1 is implicated in the nonsense-mediated mRNA decay and the general mRNA decay pathways. Its interaction with other proteins such as DCP1 and DCP2 is critical in these pathways where it assists in recognizing and targeting mRNAs for degradation. This process is vital for cellular responses to environmental changes and maintaining mRNA quality by removing defective mRNAs from the pool.

LSM1 has connections to cancer progression and specific neurodegenerative disorders. Aberrant regulation of mRNA decay processes involving LSM1 can lead to changes in gene expression patterns contributing to malignancies where proteins like DCP1A may also play a role. In neurodegenerative diseases alterations in RNA metabolism involving the LSM1 complex might contribute to the disease progression where interactions with proteins such as SMN1 could be implicated. Understanding the exact mechanisms remains an important area of research.