What are Sm proteins?

Name: Problem 22, Chapter 14: Molecular Biology
Uploaded: 2020-06-15T19:07:14-08:00
Duration: 4 min 52 s
Channel: John Barone
Description: What are Sm proteins?

Labs

Want to see this concept in action?

NEW

Explore this concept interactively to see how it behaves as you change inputs.

View Labs

Key Concepts

RNA-binding Proteins

RNA-binding proteins are proteins that have the ability to interact directly with RNA molecules. They recognize specific RNA sequences or structures, playing critical roles in various aspects of RNA metabolism including processing, transport, stability, and translation. Sm proteins fall within this category due to their role in recognizing and binding small nuclear RNAs (snRNAs).

Spliceosomal snRNPs

Spliceosomal small nuclear ribonucleoproteins (snRNPs) are essential components of the spliceosome, the complex responsible for the removal of introns from pre-messenger RNA (pre-mRNA). Sm proteins are key constituents of these snRNPs, forming a core structure that binds to the snRNA, which is crucial for the proper assembly and function of the spliceosome during RNA splicing.

Pre-mRNA Splicing

Pre-mRNA splicing is the process by which non-coding intron sequences are removed from a precursor mRNA transcript and the remaining coding sequences (exons) are joined together. This process is carried out by the spliceosome, whose activity depends on the proper formation of snRNPs with Sm proteins. The involvement of Sm proteins is therefore critical for the accuracy and efficiency of splicing in eukaryotic cells.

Transcript

Please give Ace some feedback