The 2 A structure of helix 6 of the human signal recognition particle RNA
Wild, K., Weichenrieder, O., Leonard, G.A., Cusack, S.(1999) Structure 7: 1345-1352
- PubMed: 10574798 
- DOI: https://doi.org/10.1016/s0969-2126(00)80024-6
- Primary Citation of Related Structures:  
1D4R - PubMed Abstract: 
The mammalian signal recognition particle (SRP) is an essential cytoplasmic ribonucleoprotein complex involved in targeting signal-peptide-containing proteins to the endoplasmic reticulum. Assembly of the SRP requires protein SRP19 to bind first to helix 6 of the SRP RNA before the signal-peptide-recognizing protein, SRP54, can bind to helix 8 of the RNA. Helix 6 is closed by a GGAG tetraloop, which has been shown to form part of the SRP19-binding site.
Organizational Affiliation: 
EMBL Grenoble Outstation, Grenoble, F-38042, France.