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UniProtKB - P26908 (RL21_BACSU)

Entry version 126 (23 Feb 2022)
Sequence version 1 (01 Aug 1992)
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Protein

50S ribosomal protein L21

Gene

rplU

Organism
Bacillus subtilis (strain 168)
Status
Reviewed-Annotation score:

Annotation score:2 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the 'correct annotation' for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>-Experimental evidence at protein leveli <p>This indicates the type of evidence that supports the existence of the protein. Note that the 'protein existence' evidence does not give information on the accuracy or correctness of the sequence(s) displayed.<p><a href='/help/protein_existence' target='_top'>More...</a></p>

<p>This section provides any useful information about the protein, mostly biological knowledge.<p><a href='/help/function_section' target='_top'>More...</a></p>Functioni

This protein binds to 23S rRNA in the presence of protein L20.

UniRule annotation

<p>The <a href="http://www.geneontology.org/">Gene Ontology (GO)</a> project provides a set of hierarchical controlled vocabulary split into 3 categories:<p><a href='/help/gene_ontology' target='_top'>More...</a></p>GO - Molecular functioni

Complete GO annotation on QuickGO ...

GO - Biological processi

Complete GO annotation on QuickGO ...

<p>UniProtKB Keywords constitute a <a href="http://www.uniprot.org/keywords">controlled vocabulary</a> with a hierarchical structure. Keywords summarise the content of a UniProtKB entry and facilitate the search for proteins of interest.<p><a href='/help/keywords' target='_top'>More...</a></p>Keywordsi

Molecular functionRibonucleoprotein, Ribosomal protein, RNA-binding, rRNA-binding

Enzyme and pathway databases

BioCyc Collection of Pathway/Genome Databases

More...BioCyci		BSUB:BSU27960-MONOMER

<p>This section provides information about the protein and gene name(s) and synonym(s) and about the organism that is the source of the protein sequence.<p><a href='/help/names_and_taxonomy_section' target='_top'>More...</a></p>Names & Taxonomyi

<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section provides an exhaustive list of all names of the protein, from commonly used to obsolete, to allow unambiguous identification of a protein.<p><a href='/help/protein_names' target='_top'>More...</a></p>Protein namesi
Recommended name:
50S ribosomal protein L21UniRule annotation
Alternative name(s):
BL20
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section indicates the name(s) of the gene(s) that code for the protein sequence(s) described in the entry. Four distinct tokens exist: 'Name', 'Synonyms', 'Ordered locus names' and 'ORF names'.<p><a href='/help/gene_name' target='_top'>More...</a></p>Gene namesi
Name:rplUUniRule annotation
Ordered Locus Names:BSU27960
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section provides information on the name(s) of the organism that is the source of the protein sequence.<p><a href='/help/organism-name' target='_top'>More...</a></p>OrganismiBacillus subtilis (strain 168)
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section shows the unique identifier assigned by the NCBI to the source organism of the protein. This is known as the 'taxonomic identifier' or 'taxid'.<p><a href='/help/taxonomic_identifier' target='_top'>More...</a></p>Taxonomic identifieri224308 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section contains the taxonomic hierarchical classification lineage of the source organism. It lists the nodes as they appear top-down in the taxonomic tree, with the more general grouping listed first.<p><a href='/help/taxonomic_lineage' target='_top'>More...</a></p>Taxonomic lineageiBacteria › Firmicutes › Bacilli › Bacillales › Bacillaceae › Bacillus ›
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section is present for entries that are part of a <a href="http://www.uniprot.org/proteomes">proteome</a>, i.e. of a set of proteins thought to be expressed by organisms whose genomes have been completely sequenced.<p><a href='/help/proteomes_manual' target='_top'>More...</a></p>Proteomesi
  • UP000001570 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes%5Fmanual">proteome</a> can consist of several components.<br></br>The component name refers to the genomic component encoding a set of proteins.<p><a href='/help/proteome_component' target='_top'>More...</a></p> Componenti: Chromosome

<p>This section provides information on the location and the topology of the mature protein in the cell.<p><a href='/help/subcellular_location_section' target='_top'>More...</a></p>Subcellular locationi

<p>This section describes post-translational modifications (PTMs) and/or processing events.<p><a href='/help/ptm_processing_section' target='_top'>More...</a></p>PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'PTM / Processing' section describes the extent of a polypeptide chain in the mature protein following processing or proteolytic cleavage.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00001809901 – 10250S ribosomal protein L21Add BLAST102

Proteomic databases

jPOST - Japan Proteome Standard Repository/Database

More...jPOSTi		P26908

PaxDb, a database of protein abundance averages across all three domains of life

More...PaxDbi		P26908

PRoteomics IDEntifications database

More...PRIDEi		P26908

<p>This section provides information on the quaternary structure of a protein and on interaction(s) with other proteins or protein complexes.<p><a href='/help/interaction_section' target='_top'>More...</a></p>Interactioni

<p>This subsection of the <a href="http://www.uniprot.org/help/interaction%5Fsection">'Interaction'</a> section provides information about the protein quaternary structure and interaction(s) with other proteins or protein complexes (with the exception of physiological receptor-ligand interactions which are annotated in the <a href="http://www.uniprot.org/help/function%5Fsection">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

Part of the 50S ribosomal subunit (PubMed:30126986). Contacts protein L20 (By similarity).

UniRule annotation1 Publication

Protein-protein interaction databases

Protein interaction database and analysis system

More...IntActi		P26908, 1 interactor

STRING: functional protein association networks

More...STRINGi		224308.BSU27960

<p>This section provides information on the tertiary and secondary structure of a protein.<p><a href='/help/structure_section' target='_top'>More...</a></p>Structurei

Secondary structure

1102
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details

3D structure databases

SWISS-MODEL Repository - a database of annotated 3D protein structure models

More...SMRi		P26908

Database of comparative protein structure models

More...ModBasei		Search...

Protein Data Bank in Europe - Knowledge Base

More...PDBe-KBi		Search...

<p>This section provides information on sequence similarities with other proteins and the domain(s) present in a protein.<p><a href='/help/family_and_domains_section' target='_top'>More...</a></p>Family & Domainsi

<p>This subsection of the 'Family and domains' section provides information about the sequence similarity with other proteins.<p><a href='/help/sequence_similarities' target='_top'>More...</a></p>Sequence similaritiesi

Belongs to the bacterial ribosomal protein bL21 family.UniRule annotation

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...eggNOGi		COG0261, Bacteria

InParanoid: Eukaryotic Ortholog Groups

More...InParanoidi		P26908

Identification of Orthologs from Complete Genome Data

More...OMAi		HRQEITR

Database for complete collections of gene phylogenies

More...PhylomeDBi		P26908

Family and domain databases

HAMAP database of protein families

More...HAMAPi		MF_01363, Ribosomal_L21, 1 hit

Integrated resource of protein families, domains and functional sites

More...InterProi		View protein in InterPro
IPR036164, L21-like_sf
IPR028909, L21p-like
IPR001787, Ribosomal_L21
IPR018258, Ribosomal_L21_CS

The PANTHER Classification System

More...PANTHERi		PTHR21349, PTHR21349, 1 hit

Pfam protein domain database

More...Pfami		View protein in Pfam
PF00829, Ribosomal_L21p, 1 hit

Superfamily database of structural and functional annotation

More...SUPFAMi		SSF141091, SSF141091, 1 hit

TIGRFAMs; a protein family database

More...TIGRFAMsi		TIGR00061, L21, 1 hit

PROSITE; a protein domain and family database

More...PROSITEi		View protein in PROSITE
PS01169, RIBOSOMAL_L21, 1 hit

<p>This section displays by default the canonical protein sequence and upon request all isoforms described in the entry. It also includes information pertinent to the sequence(s), including <a href="http://www.uniprot.org/help/sequence%5Flength">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>. The information is filed in different subsections. The current subsections and their content are listed below:<p><a href='/help/sequences_section' target='_top'>More...</a></p>Sequencei

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> displayed by default in the entry is complete or not.<p><a href='/help/sequence_status' target='_top'>More...</a></p>Sequence statusi: Complete.

P26908-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MYAIIKTGGK QIKVEEGQTV YIEKLAAEAG ETVTFEDVLF VGGDNVKVGN 
        60         70         80         90        100
PTVEGATVTA KVEKQGRAKK ITVFRYKPKK NVHKKQGHRQ PYTKVTIEKI 

NA
Length:102
Mass (Da):11,275
Last modified:August 1, 1992 - v1
<p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.</p> <p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.</p> <p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).</p> <p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x<sup>64</sup> + x<sup>4</sup> + x<sup>3</sup> + x + 1. The algorithm is described in the ISO 3309 standard. </p> <p class="publication">Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.<br /> <strong>Cyclic redundancy and other checksums</strong><br /> <a href="http://www.nrbook.com/b/bookcpdf.php">Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993)</a>)</p> Checksum:iEEBCFDDFD5FEFEDC
GO

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...EMBLi

GenBank nucleotide sequence database

More...GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...DDBJi
Links Updated
X59528 Genomic DNA Translation: CAA42108.1
AL009126 Genomic DNA Translation: CAB14756.1

Protein sequence database of the Protein Information Resource

More...PIRi		S18439

NCBI Reference Sequences

More...RefSeqi		NP_390674.1, NC_000964.3
WP_003229668.1, NZ_JNCM01000036.1

Genome annotation databases

Ensembl bacterial and archaeal genome annotation project

More...EnsemblBacteriai		CAB14756; CAB14756; BSU_27960

Database of genes from NCBI RefSeq genomes

More...GeneIDi		936368

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...KEGGi		bsu:BSU27960

Pathosystems Resource Integration Center (PATRIC)

More...PATRICi		fig|224308.179.peg.3038

<p>This section provides links to proteins that are similar to the protein sequence(s) described in this entry at different levels of sequence identity thresholds (100%, 90% and 50%) based on their membership in UniProt Reference Clusters (<a href="http://www.uniprot.org/help/uniref">UniRef</a>).<p><a href='/help/similar_proteins_section' target='_top'>More...</a></p>Similar proteinsi

<p>This section is used to point to information related to entries and found in data collections other than UniProtKB.<p><a href='/help/cross_references_section' target='_top'>More...</a></p>Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X59528 Genomic DNA Translation: CAA42108.1
AL009126 Genomic DNA Translation: CAB14756.1
PIRiS18439
RefSeqiNP_390674.1, NC_000964.3
WP_003229668.1, NZ_JNCM01000036.1

3D structure databases

Select the link destinations:

Protein Data Bank Europe

More...PDBei

Protein Data Bank RCSB

More...RCSB PDBi

Protein Data Bank Japan

More...PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
3J3Velectron microscopy13.30R1-102[»]
3J3Welectron microscopy10.70R1-102[»]
3J9Welectron microscopy3.90BU1-102[»]
5NJTelectron microscopy3.80k2-102[»]
6HA1electron microscopy3.10R1-102[»]
6HA8electron microscopy3.50R1-102[»]
6HTQelectron microscopy4.50R2-102[»]
6PPFelectron microscopy3.40R1-102[»]
6PPKelectron microscopy4.40R1-102[»]
6PVKelectron microscopy3.40R1-102[»]
6TNNelectron microscopy3.07k1-102[»]
6TPQelectron microscopy3.07k1-102[»]
7AQCelectron microscopy2.99g1-102[»]
7AQDelectron microscopy3.10g1-102[»]
7AS8electron microscopy2.90V1-102[»]
7AS9electron microscopy3.50V1-102[»]
7OPEelectron microscopy3.20V1-102[»]
SMRiP26908
ModBaseiSearch...
PDBe-KBiSearch...

Protein-protein interaction databases

IntActiP26908, 1 interactor
STRINGi224308.BSU27960

Proteomic databases

jPOSTiP26908
PaxDbiP26908
PRIDEiP26908

Genome annotation databases

EnsemblBacteriaiCAB14756; CAB14756; BSU_27960
GeneIDi936368
KEGGibsu:BSU27960
PATRICifig|224308.179.peg.3038

Phylogenomic databases

eggNOGiCOG0261, Bacteria
InParanoidiP26908
OMAiHRQEITR
PhylomeDBiP26908

Enzyme and pathway databases

BioCyciBSUB:BSU27960-MONOMER

Family and domain databases

HAMAPiMF_01363, Ribosomal_L21, 1 hit
InterProiView protein in InterPro
IPR036164, L21-like_sf
IPR028909, L21p-like
IPR001787, Ribosomal_L21
IPR018258, Ribosomal_L21_CS
PANTHERiPTHR21349, PTHR21349, 1 hit
PfamiView protein in Pfam
PF00829, Ribosomal_L21p, 1 hit
SUPFAMiSSF141091, SSF141091, 1 hit
TIGRFAMsiTIGR00061, L21, 1 hit
PROSITEiView protein in PROSITE
PS01169, RIBOSOMAL_L21, 1 hit

MobiDB: a database of protein disorder and mobility annotations

More...MobiDBi		Search...

<p>This section provides general information on the entry.<p><a href='/help/entry_information_section' target='_top'>More...</a></p>Entry informationi

<p>This subsection of the 'Entry information' section provides a mnemonic identifier for a UniProtKB entry, but it is not a stable identifier. Each reviewed entry is assigned a unique entry name upon integration into UniProtKB/Swiss-Prot.<p><a href='/help/entry_name' target='_top'>More...</a></p>Entry nameiRL21_BACSU
<p>This subsection of the 'Entry information' section provides one or more accession number(s). These are stable identifiers and should be used to cite UniProtKB entries. Upon integration into UniProtKB, each entry is assigned a unique accession number, which is called 'Primary (citable) accession number'.<p><a href='/help/accession_numbers' target='_top'>More...</a></p>AccessioniPrimary (citable) accession number: P26908
<p>This subsection of the 'Entry information' section shows the date of integration of the entry into UniProtKB, the date of the last sequence update and the date of the last annotation modification ('Last modified'). The version number for both the entry and the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: August 1, 1992
Last sequence update: August 1, 1992
Last modified: February 23, 2022
This is version 126 of the entry and version 1 of the sequence. See complete history.
<p>This subsection of the 'Entry information' section indicates whether the entry has been manually annotated and reviewed by UniProtKB curators or not, in other words, if the entry belongs to the Swiss-Prot section of UniProtKB (<strong>reviewed</strong>) or to the computer-annotated TrEMBL section (<strong>unreviewed</strong>).<p><a href='/help/entry_status' target='_top'>More...</a></p>Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

<p>This section contains any relevant information that doesn't fit in any other defined sections<p><a href='/help/miscellaneous_section' target='_top'>More...</a></p>Miscellaneousi

Keywords - Technical termi

3D-structure, Reference proteome

Documents

  1. Ribosomal proteins
    Ribosomal proteins families and list of entries
  2. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  3. SIMILARITY comments
    Index of protein domains and families
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