Protein Domain : IPR002359

Type:  Conserved_site Name:  Ribosomal protein L6, conserved site-2
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 [, ].This pattern identifies ribosomal protein L6, which is one of the proteins from the large ribosomal subunit. In Escherichia coli, L6 is known to bind directly to the 23S rRNA and is located at the aminoacyl-tRNA binding site of the peptidyltransferase centre.It belongs to a family of ribosomal proteins, which on the basis of sequence similarities groups: bacterial, algal chloroplast, cyanelle, archaeal, Marchantia polymorphamitochondrial L6, yeast mitochondrial YmL6 (gene MRPL6), mammalian, Drosophila melanogaster, plant and yeast L9 [, , ]. This signature finds the archaeal L6 proteins, and L9 proteins, L6 proteins from other organisms are found in . Short Name:  Ribosomal_L6_CS2

0 Child Features

0 Contains

1 Cross References

Identifier
PS00700

3 Found Ins

DB identifier Type Name
IPR020040 Domain Ribosomal protein L6, alpha-beta domain
IPR000702 Family Ribosomal protein L6
IPR019907 Family Ribosomal protein L6P, archaea

4 GO Annotations

GO Term Gene Name
GO:0003735 IPR002359
GO:0006412 IPR002359
GO:0005622 IPR002359
GO:0005840 IPR002359

4 Ontology Annotations

GO Term Gene Name
GO:0003735 IPR002359
GO:0006412 IPR002359
GO:0005622 IPR002359
GO:0005840 IPR002359

0 Parent Features

0 Proteins

6 Publications

First Author Title Year Journal Volume Pages PubMed ID
            11297922
            11290319
            11114498
            8262035
            8358820
            2227441