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UniProtKB - P32551 (QCR2_RAT)

Entry version 154 (07 Apr 2021)
Sequence version 2 (09 Jan 2007)
Previous versions | rss
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Protein

Cytochrome b-c1 complex subunit 2, mitochondrial

Gene

Uqcrc2

Organism
Rattus norvegicus (Rat)
Status
Reviewed-Annotation score:

Annotation score:4 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

Component of the ubiquinol-cytochrome c oxidoreductase, a multisubunit transmembrane complex that is part of the mitochondrial electron transport chain which drives oxidative phosphorylation. The respiratory chain contains 3 multisubunit complexes succinate dehydrogenase (complex II, CII), ubiquinol-cytochrome c oxidoreductase (cytochrome b-c1 complex, complex III, CIII) and cytochrome c oxidase (complex IV, CIV), that cooperate to transfer electrons derived from NADH and succinate to molecular oxygen, creating an electrochemical gradient over the inner membrane that drives transmembrane transport and the ATP synthase. The cytochrome b-c1 complex catalyzes electron transfer from ubiquinol to cytochrome c, linking this redox reaction to translocation of protons across the mitochondrial inner membrane, with protons being carried across the membrane as hydrogens on the quinol. In the process called Q cycle, 2 protons are consumed from the matrix, 4 protons are released into the intermembrane space and 2 electrons are passed to cytochrome c (By similarity).

The 2 core subunits UQCRC1/QCR1 and UQCRC2/QCR2 are homologous to the 2 mitochondrial-processing peptidase (MPP) subunits beta-MPP and alpha-MPP respectively, and they seem to have preserved their MPP processing properties. May be involved in the in situ processing of UQCRFS1 into the mature Rieske protein and its mitochondrial targeting sequence (MTS)/subunit 9 when incorporated into complex III (By similarity).

By similarity

<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

Biological processElectron transport, Respiratory chain, Transport

Enzyme and pathway databases

Reactome - a knowledgebase of biological pathways and processes

More...Reactomei		R-RNO-611105, Respiratory electron transport

Protein family/group databases

MEROPS protease database

More...MEROPSi		M16.974

<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:
Cytochrome b-c1 complex subunit 2, mitochondrial
Alternative name(s):
Complex III subunit 2
Core protein II
Ubiquinol-cytochrome-c reductase complex core protein 2
<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:Uqcrc2
<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>OrganismiRattus norvegicus (Rat)
<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 identifieri10116 [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 lineageiEukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Glires › Rodentia › Myomorpha › Muroidea › Muridae › Murinae › Rattus
<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
  • UP000002494 <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 1

Organism-specific databases

Rat genome database

More...RGDi		1359150, Uqcrc2

<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

Keywords - Cellular componenti

Membrane, Mitochondrion, Mitochondrion inner membrane

<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 transit peptide.<p><a href='/help/transit' target='_top'>More...</a></p>Transit peptidei1 – 14MitochondrionBy similarityAdd BLAST14
<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_000002679315 – 452Cytochrome b-c1 complex subunit 2, mitochondrialAdd BLAST438

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'PTM / Processing' section specifies the position and type of each modified residue excluding <a href="http://www.uniprot.org/manual/lipid">lipids</a>, <a href="http://www.uniprot.org/manual/carbohyd">glycans</a> and <a href="http://www.uniprot.org/manual/crosslnk">protein cross-links</a>.<p><a href='/help/mod_res' target='_top'>More...</a></p>Modified residuei65N6-acetyllysineBy similarity1
Modified residuei198N6-acetyllysineBy similarity1
Modified residuei249N6-acetyllysineBy similarity1
Modified residuei367PhosphoserineCombined sources1

Keywords - PTMi

Acetylation, Phosphoprotein

Proteomic databases

jPOST - Japan Proteome Standard Repository/Database

More...jPOSTi		P32551

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

More...PaxDbi		P32551

PRoteomics IDEntifications database

More...PRIDEi		P32551

2D gel databases

The World-2DPAGE database

More...World-2DPAGEi		0004:P32551

PTM databases

CarbonylDB database of protein carbonylation sites

More...CarbonylDBi		P32551

iPTMnet integrated resource for PTMs in systems biology context

More...iPTMneti		P32551

Comprehensive resource for the study of protein post-translational modifications (PTMs) in human, mouse and rat.

More...PhosphoSitePlusi		P32551

<p>This section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms.<p><a href='/help/expression_section' target='_top'>More...</a></p>Expressioni

<p>This subsection of the 'Expression' section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms. By default, the information is derived from experiments at the mRNA level, unless specified 'at protein level'.<br></br>Examples: <a href="http://www.uniprot.org/uniprot/P92958#expression">P92958</a>, <a href="http://www.uniprot.org/uniprot/Q8TDN4#expression">Q8TDN4</a>, <a href="http://www.uniprot.org/uniprot/O14734#expression">O14734</a><p><a href='/help/tissue_specificity' target='_top'>More...</a></p>Tissue specificityi

Expressed in the head region and flagellum of epididymal sperm.1 Publication

Gene expression databases

Bgee dataBase for Gene Expression Evolution

More...Bgeei		ENSRNOG00000036742, Expressed in heart and 21 other tissues

Genevisible search portal to normalized and curated expression data from Genevestigator

More...Genevisiblei		P32551, RN

<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

Component of the ubiquinol-cytochrome c oxidoreductase (cytochrome b-c1 complex, complex III, CIII), a multisubunit enzyme composed of 11 subunits. The complex is composed of 3 respiratory subunits cytochrome b, cytochrome c1 and Rieske protein UQCRFS1, 2 core protein subunits UQCRC1/QCR1 and UQCRC2/QCR2, and 6 low-molecular weight protein subunits UQCRH/QCR6, UQCRB/QCR7, UQCRQ/QCR8, UQCR10/QCR9, UQCR11/QCR10 and subunit 9, the cleavage product of Rieske protein UQCRFS1 (By similarity). The complex exists as an obligatory dimer and forms supercomplexes (SCs) in the inner mitochondrial membrane with NADH-ubiquinone oxidoreductase (complex I, CI) and cytochrome c oxidase (complex IV, CIV), resulting in different assemblies (supercomplex SCI1III2IV1 and megacomplex MCI2III2IV2) (By similarity).

Interacts with RAB5IF (By similarity).

By similarity

Protein-protein interaction databases

The Biological General Repository for Interaction Datasets (BioGRID)

More...BioGRIDi		254272, 4 interactors

CORUM comprehensive resource of mammalian protein complexes

More...CORUMi		P32551

Protein interaction database and analysis system

More...IntActi		P32551, 7 interactors

Molecular INTeraction database

More...MINTi		P32551

STRING: functional protein association networks

More...STRINGi		10116.ENSRNOP00000021514

<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

3D structure databases

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

More...SMRi		P32551

Database of comparative protein structure models

More...ModBasei		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 peptidase M16 family. UQCRC2/QCR2 subfamily.Curated

Keywords - Domaini

Transit peptide

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...eggNOGi		KOG2583, Eukaryota

Ensembl GeneTree

More...GeneTreei		ENSGT00940000154915

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...HOGENOMi		CLU_009902_0_0_1

InParanoid: Eukaryotic Ortholog Groups

More...InParanoidi		P32551

Identification of Orthologs from Complete Genome Data

More...OMAi		APKFALY

Database of Orthologous Groups

More...OrthoDBi		1000258at2759

Database for complete collections of gene phylogenies

More...PhylomeDBi		P32551

TreeFam database of animal gene trees

More...TreeFami		TF105033

Family and domain databases

Integrated resource of protein families, domains and functional sites

More...InterProi		View protein in InterPro
IPR011249, Metalloenz_LuxS/M16
IPR011765, Pept_M16_N
IPR001431, Pept_M16_Zn_BS
IPR007863, Peptidase_M16_C

Pfam protein domain database

More...Pfami		View protein in Pfam
PF00675, Peptidase_M16, 1 hit
PF05193, Peptidase_M16_C, 1 hit

Superfamily database of structural and functional annotation

More...SUPFAMi		SSF63411, SSF63411, 2 hits

PROSITE; a protein domain and family database

More...PROSITEi		View protein in PROSITE
PS00143, INSULINASE, 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.

<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 in its mature form or if it represents the precursor.<p><a href='/help/sequence_processing' target='_top'>More...</a></p>Sequence processingi: The displayed sequence is further processed into a mature form.

P32551-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MKLLSRAGSF SRFYSLKVAP KLKTSAPGGV PLQPQELEFT KLPNGLVIAS 
        60         70         80         90        100
LENYAPLSRI GLFIKAGSRY ENYNYLGTSH LLRLASTLTT KGASSFKITR 
       110        120        130        140        150
GIEAVGGKLS VTATRENMAY TVEGIRDDIE ILMEFLLNVT TAPEFRRWEV 
       160        170        180        190        200
AALRSQLKID KAVAFQNPQT RIIENLHDVA YKNALANPLY CPDYRMGKIT 
       210        220        230        240        250
SEELHYFVQN HFTSARMALV GLGVSHSILK EVAEQFLNIR GGLGLAGAKA 
       260        270        280        290        300
KYRGGEIREQ NGDNLVHAAI VAESAAIGNA EANAFSVLQH LLGAGPHIKR 
       310        320        330        340        350
GNNTTSLLSQ SVAKGSQQPF DVSAFNASYS DSGLFGIYTV SQAAAAGDVI 
       360        370        380        390        400
NAAYNQVKAV AQGNLSSADV QAAKNKLKAG YLMSVETSEG FLSEIGSQAL 
       410        420        430        440        450
ATGSYMPPPT VLQQIDAVAD ADVVKAAKKF VSGKKSMTAS GNLGHTPFLD 

EL
Length:452
Mass (Da):48,396
Last modified:January 9, 2007 - v2
<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:iF4FFCA59CEB04270
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Sequence' section reports difference(s) between the canonical sequence (displayed by default in the entry) and the different sequence submissions merged in the entry. These various submissions may originate from different sequencing projects, different types of experiments, or different biological samples. Sequence conflicts are usually of unknown origin.<p><a href='/help/conflict' target='_top'>More...</a></p>Sequence conflicti445H → N (PubMed:2162168).Curated1

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
BC083610 mRNA Translation: AAH83610.1

Protein sequence database of the Protein Information Resource

More...PIRi		S29510

NCBI Reference Sequences

More...RefSeqi		NP_001006971.1, NM_001006970.1

Genome annotation databases

Ensembl eukaryotic genome annotation project

More...Ensembli		ENSRNOT00000021514; ENSRNOP00000021514; ENSRNOG00000036742

Database of genes from NCBI RefSeq genomes

More...GeneIDi		293448

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...KEGGi		rno:293448

UCSC genome browser

More...UCSCi		RGD:1359150, rat

<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
BC083610 mRNA Translation: AAH83610.1
PIRiS29510
RefSeqiNP_001006971.1, NM_001006970.1

3D structure databases

SMRiP32551
ModBaseiSearch...

Protein-protein interaction databases

BioGRIDi254272, 4 interactors
CORUMiP32551
IntActiP32551, 7 interactors
MINTiP32551
STRINGi10116.ENSRNOP00000021514

Protein family/group databases

MEROPSiM16.974

PTM databases

CarbonylDBiP32551
iPTMnetiP32551
PhosphoSitePlusiP32551

2D gel databases

World-2DPAGEi0004:P32551

Proteomic databases

jPOSTiP32551
PaxDbiP32551
PRIDEiP32551

Genome annotation databases

EnsembliENSRNOT00000021514; ENSRNOP00000021514; ENSRNOG00000036742
GeneIDi293448
KEGGirno:293448
UCSCiRGD:1359150, rat

Organism-specific databases

Comparative Toxicogenomics Database

More...CTDi		7385
RGDi1359150, Uqcrc2

Phylogenomic databases

eggNOGiKOG2583, Eukaryota
GeneTreeiENSGT00940000154915
HOGENOMiCLU_009902_0_0_1
InParanoidiP32551
OMAiAPKFALY
OrthoDBi1000258at2759
PhylomeDBiP32551
TreeFamiTF105033

Enzyme and pathway databases

ReactomeiR-RNO-611105, Respiratory electron transport

Miscellaneous databases

Protein Ontology

More...PROi		PR:P32551

Gene expression databases

BgeeiENSRNOG00000036742, Expressed in heart and 21 other tissues
GenevisibleiP32551, RN

Family and domain databases

InterProiView protein in InterPro
IPR011249, Metalloenz_LuxS/M16
IPR011765, Pept_M16_N
IPR001431, Pept_M16_Zn_BS
IPR007863, Peptidase_M16_C
PfamiView protein in Pfam
PF00675, Peptidase_M16, 1 hit
PF05193, Peptidase_M16_C, 1 hit
SUPFAMiSSF63411, SSF63411, 2 hits
PROSITEiView protein in PROSITE
PS00143, INSULINASE, 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 nameiQCR2_RAT
<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: P32551
Secondary accession number(s): Q5XIR3
<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: October 1, 1993
Last sequence update: January 9, 2007
Last modified: April 7, 2021
This is version 154 of the entry and version 2 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 programChordata 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

Direct protein sequencing, Reference proteome

Documents

  1. Peptidase families
    Classification of peptidase families and list of entries
  2. SIMILARITY comments
    Index of protein domains and families
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