| Primary Identifier | IPR026258 | Type | Family |
| Short Name | SRP68 |
| description | The signal recognition particle (SRP) is a large ribonucleoprotein complex that targets secretory and membrane proteins to the endoplasmic reticulum membrane [, ]. The mammalian SRP contains a 303-nucleotide SRP RNA and six proteins, named SRP9, SRP14, SRP19, SRP54, SRP68, and SRP72. Among them, the two largest, SRP68 and SRP72, form a stable SRP68/72 heterodimer of unknown structure, which is required for sorting secretory proteins []. SRP68 binds to SRP RNA directly, while SRP72 binds the SRP RNA largely via non-specific electrostatic interaction. The binding of SRP72 with SRP RNA enhances the affinity of SRP68 for the RNA. |
