Protein Domain : IPR018273

Type:  Conserved_site Name:  Ribosomal protein S17e, conserved site
Description:  Ribosomes are the particles that catalyse mRNA-directed protein synthesis in all organisms. The codons of the mRNA are exposed on the ribosome to allow tRNA binding. This leads to the incorporation of amino acids into the growing polypeptide chain in accordance with the genetic information. Incoming amino acid monomers enter the ribosomal A site in the form of aminoacyl-tRNAs complexed with elongation factor Tu (EF-Tu) and GTP. The growing polypeptide chain, situated in the P site as peptidyl-tRNA, is then transferred to aminoacyl-tRNA and the new peptidyl-tRNA, extended by one residue, is translocated to the P site with the aid the elongation factor G (EF-G) and GTP as the deacylated tRNA is released from the ribosome through one or more exit sites [, ]. About 2/3 of the mass of the ribosome consists of RNA and 1/3 of protein. The proteins are named in accordance with the subunit of the ribosome which they belong to - the small (S1 to S31) and the large (L1 to L44). Usually they decorate the rRNA cores of the subunits. Many ribosomal proteins, particularly those of the large subunit, are composed of a globular, surfaced-exposed domain with long finger-like projections that extend into the rRNA core to stabilise its structure. Most of the proteins interact with multiple RNA elements, often from different domains. In the large subunit, about 1/3 of the 23S rRNA nucleotides are at least in van der Waal's contact with protein, and L22 interacts with all six domains of the 23S rRNA. Proteins S4 and S7, which initiate assembly of the 16S rRNA, are located at junctions of five and four RNA helices, respectively. In this way proteins serve to organise and stabilise the rRNA tertiary structure. While the crucial activities of decoding and peptide transfer are RNA based, proteins play an active role in functions that may have evolved to streamline the process of protein synthesis. In addition to their function in the ribosome, many ribosomal proteins have some function 'outside' the ribosome [, ].A number of eukaryotic and archaebacterial ribosomal proteins can be grouped in this family of ribosomal proteins, S17e. They include, vertebrate, Drosophila andNeurospora crassa(crp-3) S17's as well as yeast S17a (RP51A) and S17b (RP51B) and archaebacterial S17e [, , ]. Short Name:  Ribosomal_S17e_CS

0 Child Features

0 Contains

1 Cross References

Identifier
PS00712

1 Found In

DB identifier Type Name
IPR001210 Family Ribosomal protein S17e

4 GO Annotations

GO Term Gene Name
GO:0003735 IPR018273
GO:0006412 IPR018273
GO:0005622 IPR018273
GO:0005840 IPR018273

4 Ontology Annotations

GO Term Gene Name
GO:0003735 IPR018273
GO:0006412 IPR018273
GO:0005622 IPR018273
GO:0005840 IPR018273

0 Parent Features

0 Proteins

6 Publications

First Author Title Year Journal Volume Pages PubMed ID
            11297922
            11290319
            11114498
            3240863
            2507396
            6092944