splicing of RNA

• what is splicing

  the removal of non-coding sequences (introns) from the primary transcript or pre-mRNA
• the splicing process

  the introns are looped out and cut off by a complex of proteins and small nuclear RNAs called the spliceosome

  the coding sequences or exons are then joined together to form the final mRNA molecule

  it enables one gene to produce different proteins, depending on which exons are included or excluded increasing proteins
• the significance

  the various processes involved in gene expression, including transcription, splicing, translation and post-translation modification, allow the cell to make a wide range of proteins needed for its specific functions

  errors in any of these stages could lead to the production of faulty proteins having implications for health and diseases