Protein Domain : IPR000702

Type:  Family Name:  Ribosomal protein L6
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 [, ].L6 is a protein from the large (50S) subunit. In Escherichia coli, it is located in the aminoacyl-tRNA binding site of the peptidyltransferase centre, and is known to bind directly to 23S rRNA. It belongs to a family of ribosomal proteins, including L6 from bacteria, cyanelles (structures that perform similar functions to chloroplasts, but have structural and biochemical characteristics of Cyanobacteria) and mitochondria; and L9 from mammals, Drosophila, plants and yeast. L6 contains two domains with almost identical folds, suggesting that is was derived by the duplication of anancient RNA-binding protein gene. Analysis reveals several sites on the protein surface where interactions with other ribosome components may occur, the N terminus being involved in protein-protein interactions and the C terminus containing possible RNA-binding sites []. Short Name:  Ribosomal_L6

2 Child Features

DB identifier Type Name
IPR019906 Family Ribosomal protein L6, bacterial-type
IPR019907 Family Ribosomal protein L6P, archaea

3 Contains

DB identifier Type Name
IPR020040 Domain Ribosomal protein L6, alpha-beta domain
IPR002358 Conserved_site Ribosomal protein L6, conserved site
IPR002359 Conserved_site Ribosomal protein L6, conserved site-2

2 Cross Referencess

Identifier
PTHR11655
PIRSF002162

0 Found In

4 GO Annotations

GO Term Gene Name
GO:0003735 IPR000702
GO:0019843 IPR000702
GO:0006412 IPR000702
GO:0005840 IPR000702

4 Ontology Annotations

GO Term Gene Name
GO:0003735 IPR000702
GO:0019843 IPR000702
GO:0006412 IPR000702
GO:0005840 IPR000702

0 Parent Features

3256 Proteins

DB identifier UniProt Accession Secondary Identifier Organism Name Length
107348 D8S2Z9 PAC:15419984 Selaginella moellendorffii 212  
269009 D8SQ71 PAC:15414070 Selaginella moellendorffii 190  
6327 D8R6I0 PAC:15420852 Selaginella moellendorffii 171  
evm.model.supercontig_183.15 PAC:16411596 Carica papaya 257  
evm.model.supercontig_183.14 PAC:16411595 Carica papaya 194  
evm.model.supercontig_27.99 PAC:16415724 Carica papaya 194  
evm.model.supercontig_8.216 PAC:16426504 Carica papaya 210  
evm.model.supercontig_903.1 PAC:16428447 Carica papaya 102  
30068.m002625 B9RYY9 PAC:16816632 Ricinus communis 194  
30068.m002627 B9RYZ1 PAC:16816634 Ricinus communis 194  
28842.m000920 B9SBM0 PAC:16801809 Ricinus communis 194  
28152.m000876 B9SNA1 PAC:16800026 Ricinus communis 102  
Cucsa.127440.1 A0A0A0KJ40 PAC:16962046 Cucumis sativus 102  
Cucsa.127440.2 A0A0A0KJ40 PAC:16962047 Cucumis sativus 102  
Cucsa.174620.1 A0A0A0KW25 PAC:16966693 Cucumis sativus 195  
Cucsa.148470.1 A0A0A0K3K9 PAC:16964159 Cucumis sativus 233  
Cucsa.201720.1 A0A0A0KJL8 PAC:16968867 Cucumis sativus 194  
orange1.1g029116m A0A067DFB5 PAC:18134332 Citrus sinensis 199  
orange1.1g027306m A0A067DFQ4 PAC:18134331 Citrus sinensis 225  
orange1.1g046142m A0A067DCW6 PAC:18126431 Citrus sinensis 132  
orange1.1g033325m A0A067D8Z4 PAC:18110444 Citrus sinensis 122  
orange1.1g029415m A0A067GN97 PAC:18118967 Citrus sinensis 194  
orange1.1g029362m A0A067FSX8 PAC:18116564 Citrus sinensis 194  
orange1.1g032626m A0A067FGS6 PAC:18116565 Citrus sinensis 137  
orange1.1g029373m A0A067EEY8 PAC:18104552 Citrus sinensis 194  
orange1.1g029052m A0A067E3Z2 PAC:18104551 Citrus sinensis 200  
AT4G10450.1 Q9SZX9 PAC:19644294 Arabidopsis thaliana 194  
AT1G05190.1 O23049 PAC:19651708 Arabidopsis thaliana 223  
AT1G33120.1 P49209 PAC:19655186 Arabidopsis thaliana 194  
AT1G33140.1 P49209 PAC:19657048 Arabidopsis thaliana 194  

4 Publications

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