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1280  structures 8549  species 0  interactions 12097  sequences 65  architectures

Family: Ribosomal_S14 (PF00253)

Summary: Ribosomal protein S14p/S29e

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Ribosomal protein S14p/S29e Provide feedback

This family includes both ribosomal S14 from prokaryotes and S29 from eukaryotes.

Internal database links

External database links

This tab holds annotation information from the InterPro database.

InterPro entry IPR001209

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 [ PUBMED:11297922 , PUBMED:11290319 ]. 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 [ PUBMED:11290319 , PUBMED:11114498 ].

S14 is one of the proteins from the small ribosomal subunit. In Escherichia coli, S14 is known to be required for the assembly of 30S particles and may also be responsible for determining the conformation of 16S rRNA at the A site. It belongs to a family of ribosomal proteins [ PUBMED:8441676 ] that include bacterial, algal and plant chloroplast S14, yeast mitochondrial MRP2, cyanelle S14, archaebacteria Methanococcus vannielii S14, as well as yeast mitochondrial MRP2, yeast YS29A/B, and mammalian S29.

Gene Ontology

The mapping between Pfam and Gene Ontology is provided by InterPro. If you use this data please cite InterPro.

Domain organisation

Below is a listing of the unique domain organisations or architectures in which this domain is found. More...

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We store a range of different sequence alignments for families. As well as the seed alignment from which the family is built, we provide the full alignment, generated by searching the sequence database (reference proteomes) using the family HMM. We also generate alignments using four representative proteomes (RP) sets and the UniProtKB sequence database. More...

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We make a range of alignments for each Pfam-A family. You can see a description of each above. You can view these alignments in various ways but please note that some types of alignment are never generated while others may not be available for all families, most commonly because the alignments are too large to handle.

Representative proteomes UniProt
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1Cannot generate PP/Heatmap alignments for seeds; no PP data available

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Representative proteomes UniProt

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We make all of our alignments available in Stockholm format. You can download them here as raw, plain text files or as gzip-compressed files.

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You can also download a FASTA format file containing the full-length sequences for all sequences in the full alignment.

HMM logo

HMM logos is one way of visualising profile HMMs. Logos provide a quick overview of the properties of an HMM in a graphical form. You can see a more detailed description of HMM logos and find out how you can interpret them here. More...


This page displays the phylogenetic tree for this family's seed alignment. We use FastTree to calculate neighbour join trees with a local bootstrap based on 100 resamples (shown next to the tree nodes). FastTree calculates approximately-maximum-likelihood phylogenetic trees from our seed alignment.

Note: You can also download the data file for the tree.

Curation and family details

This section shows the detailed information about the Pfam family. You can see the definitions of many of the terms in this section in the glossary and a fuller explanation of the scoring system that we use in the scores section of the help pages.

Curation View help on the curation process

Seed source: Prosite
Previous IDs: S14;
Type: Family
Sequence Ontology: SO:0100021
Author: Finn RD
Number in seed: 336
Number in full: 12097
Average length of the domain: 52.70 aa
Average identity of full alignment: 43 %
Average coverage of the sequence by the domain: 55.20 %

HMM information View help on HMM parameters

HMM build commands:
build method: hmmbuild -o /dev/null HMM SEED
search method: hmmsearch -Z 61295632 -E 1000 --cpu 4 HMM pfamseq
Model details:
Parameter Sequence Domain
Gathering cut-off 27.0 27.0
Trusted cut-off 27.3 27.0
Noise cut-off 26.9 26.8
Model length: 54
Family (HMM) version: 24
Download: download the raw HMM for this family

Species distribution

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Colour assignments

Archea Archea Eukaryota Eukaryota
Bacteria Bacteria Other sequences Other sequences
Viruses Viruses Unclassified Unclassified
Viroids Viroids Unclassified sequence Unclassified sequence


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This visualisation provides a simple graphical representation of the distribution of this family across species. You can find the original interactive tree in the adjacent tab. More...

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The tree shows the occurrence of this domain across different species. More...


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For those sequences which have a structure in the Protein DataBank, we use the mapping between UniProt, PDB and Pfam coordinate systems from the PDBe group, to allow us to map Pfam domains onto UniProt sequences and three-dimensional protein structures. The table below shows the structures on which the Ribosomal_S14 domain has been found. There are 1280 instances of this domain found in the PDB. Note that there may be multiple copies of the domain in a single PDB structure, since many structures contain multiple copies of the same protein sequence.

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AlphaFold Structure Predictions

The list of proteins below match this family and have AlphaFold predicted structures. Click on the protein accession to view the predicted structure.

Protein Predicted structure External Information
A0A0R0I6D2 View 3D Structure Click here
A0A1D6L690 View 3D Structure Click here
A0A1D6LEN4 View 3D Structure Click here
A0A1D6LFE5 View 3D Structure Click here
A0A1D6PQ36 View 3D Structure Click here
A0A1D8PTR4 View 3D Structure Click here
A4I3V0 View 3D Structure Click here
B0S6K4 View 3D Structure Click here
B2RYT4 View 3D Structure Click here
C0H4K8 View 3D Structure Click here
K7U1I2 View 3D Structure Click here
M1FQJ9 View 3D Structure Click here
O21035 View 3D Structure Click here
O42859 View 3D Structure Click here
O60783 View 3D Structure Click here
O74329 View 3D Structure Click here
P08527 View 3D Structure Click here
P0AG59 View 3D Structure Click here
P0C467 View 3D Structure Click here
P10663 View 3D Structure Click here
P41057 View 3D Structure Click here
P41058 View 3D Structure Click here
P49391 View 3D Structure Click here
P54110 View 3D Structure Click here
P56804 View 3D Structure Click here
P62273 View 3D Structure Click here
P62274 View 3D Structure Click here
P62275 View 3D Structure Click here
P90983 View 3D Structure Click here
P9WH57 View 3D Structure Click here
P9WH59 View 3D Structure Click here
Q2FW19 View 3D Structure Click here
Q2FYU5 View 3D Structure Click here
Q2PMU1 View 3D Structure Click here
Q4CMS5 View 3D Structure Click here
Q4CPB5 View 3D Structure Click here
Q4CXR4 View 3D Structure Click here
Q5AJZ7 View 3D Structure Click here
Q680P8 View 3D Structure Click here
Q6Q419 View 3D Structure Click here