GO:0005786: signal recognition particle, endoplasmic reticulum targeting (Cellular component)

"A ribonucleoprotein particle of 325 kDa composed of a 7S (300 nucleotide) RNA molecule and a complex of six different polypeptides. This binds both to the N-terminal signal peptide for proteins destined for the endoplasmic reticulum as they emerge from the large ribosomal subunit and also to the ribosome. This binding arrests further translation thereby preventing the proteins from being released into the cytosol. The SRP-ribosome complex then diffuses to the endoplasmic reticulum where it is bound to the signal recognition particle receptor, which allows resumption of protein synthesis and facilitates the passage of the growing polypeptide chain through the translocon. Through a process involving GTP hydrolysis, the SRP-SRP receptor complex dissociates and SRP returns to the cytosol. Of the six polypeptides of SRP the 54 kDa subunit (SRP54) is the central player. It contains an N-terminal GTPase domain and a C-terminal domain that binds directly to the signal peptide and the SRP RNA. Examples of this component are found in Mus musculus, Saccharomyces cerevisiae and Arabidopsis thaliana." [GOC:mtg_sensu, ISBN:0198506732]


There are 32 sequences with this label.

Enriched clusters
Name Species % in cluster p-value corrected p-value action
Cluster_165 Arabidopsis thaliana 1.09 % 0.00193 0.023744
Cluster_140 Arabidopsis thaliana 1.45 % 0.024919 0.043529
Cluster_121 Chlamydomonas reinhardtii 1.72 % 0.006528 0.020034
Cluster_106 Oryza sativa 0.59 % 0.008442 0.024495
Cluster_165 Solanum lycopersicum 0.84 % 0.000457 0.002505
Cluster_47 Vitis vinifera 1.09 % 0.006972 0.035118
Cluster_99 Vitis vinifera 0.93 % 0.008106 0.036681
Cluster_696 Zea mays 25.0 % 0.000718 0.012202
Sequences (32) (download table)

InterPro Domains

GO Terms

Family Terms