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Entry version 81 (17 Jun 2020)
Sequence version 1 (24 Jul 2007)
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Protein

F-box/LRR-repeat protein 2

Gene

FBXL2

Organism
Bos taurus (Bovine)
Status
Reviewed-Annotation score:

Annotation score:3 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 transcript 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

Calcium-activated substrate recognition component of the SCF (SKP1-cullin-F-box protein) E3 ubiquitin-protein ligase complex, SCF(FBXL2), which mediates the ubiquitination and subsequent proteasomal degradation of target proteins. Unlike many F-box proteins, FBXL2 does not seem to target phosphodegron within its substrates but rather calmodulin-binding motifs and is thereby antagonized by calmodulin. This is the case for the cyclins CCND2 and CCND3 which polyubiquitination and subsequent degradation are inhibited by calmodulin. Through CCND2 and CCND3 degradation induces cell-cycle arrest in G0. SCF(FBXL2) also mediates PIK3R2 ubiquitination and proteasomal degradation thereby regulating phosphatidylinositol 3-kinase signaling and autophagy. PCYT1A monoubiquitination by SCF(FBXL2) and subsequent degradation regulates synthesis of phosphatidylcholine, which is utilized for formation of membranes and of pulmonary surfactant.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

GO - Biological processi

<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 functionCalmodulin-binding
Biological processUbl conjugation pathway
LigandCalcium

<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:
F-box/LRR-repeat protein 2Curated
Alternative name(s):
F-box and leucine-rich repeat protein 2Curated
<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:FBXL2Curated
<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>OrganismiBos taurus (Bovine)
<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 identifieri9913 [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 lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaLaurasiatheriaArtiodactylaRuminantiaPecoraBovidaeBovinaeBos
<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
  • UP000009136 <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 22

Organism-specific databases

Vertebrate Gene Nomenclature Database

More...
VGNCi
VGNC:52775 FBXL2

<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

<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_00003540841 – 423F-box/LRR-repeat protein 2Add BLAST423

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/ptm%5Fprocessing%5Fsection">PTM / Processing</a> section specifies the position(s) and the type of covalently attached lipid group(s).<p><a href='/help/lipid' target='_top'>More...</a></p>Lipidationi420S-geranylgeranyl cysteineBy similarity1

Keywords - PTMi

Lipoprotein, Prenylation

Proteomic databases

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

More...
PaxDbi
A6H779

PRoteomics IDEntifications database

More...
PRIDEi
A6H779

<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

Gene expression databases

Bgee dataBase for Gene Expression Evolution

More...
Bgeei
ENSBTAG00000003952 Expressed in brain and 9 other tissues

ExpressionAtlas, Differential and Baseline Expression

More...
ExpressionAtlasi
A6H779 baseline

<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 SCF (SKP1-CUL1-F-box) E3 ubiquitin-protein ligase complex SCF(FBXL2) composed of CUL1, SKP1, RBX1 and FBXL2.

Interacts with PCYT1A.

Interacts with calmodulin; may antagonize substrate ubiquitination by SCF(FBXL2).

Interacts with CCND2 and CCND3.

Interacts with PIK3R2; PIK3R2 is a substrate ubiquitinated by the SCF(FBXL2) complex. May interact with PIK3R1.

Interacts with PTPN13.

By similarity

GO - Molecular functioni

Protein-protein interaction databases

STRING: functional protein association networks

More...
STRINGi
9913.ENSBTAP00000005160

<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
A6H779

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

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/family%5Fand%5Fdomains%5Fsection">Family and Domains</a> section describes the position and type of a domain, which is defined as a specific combination of secondary structures organized into a characteristic three-dimensional structure or fold.<p><a href='/help/domain' target='_top'>More...</a></p>Domaini9 – 55F-boxPROSITE-ProRule annotationAdd BLAST47
<p>This subsection of the 'Family and Domains' section indicates the positions and types of repeated sequence motifs or repeated domains within the protein.<p><a href='/help/repeat' target='_top'>More...</a></p>Repeati61 – 87LRR 1Add BLAST27
Repeati88 – 113LRR 2Add BLAST26
Repeati114 – 139LRR 3Add BLAST26
Repeati140 – 165LRR 4Add BLAST26
Repeati166 – 191LRR 5Add BLAST26
Repeati192 – 217LRR 6Add BLAST26
Repeati218 – 243LRR 7Add BLAST26
Repeati244 – 269LRR 8Add BLAST26
Repeati270 – 295LRR 9Add BLAST26
Repeati296 – 321LRR 10Add BLAST26
Repeati322 – 350LRR 11Add BLAST29
Repeati351 – 375LRR 12Add BLAST25
Repeati376 – 401LRR 13Add BLAST26

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Family and Domains' section describes a region of interest that cannot be described in other subsections.<p><a href='/help/region' target='_top'>More...</a></p>Regioni80 – 90Interaction with CalmodulinBy similarityAdd BLAST11

Motif

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Family and Domains' section describes a short (usually not more than 20 amino acids) conserved sequence motif of biological significance.<p><a href='/help/motif' target='_top'>More...</a></p>Motifi420 – 423CAAX motif4

<p>This subsection of the 'Family and domains' section provides general information on the biological role of a domain. The term 'domain' is intended here in its wide acceptation, it may be a structural domain, a transmembrane region or a functional domain. Several domains are described in this subsection.<p><a href='/help/domain_cc' target='_top'>More...</a></p>Domaini

The CAAX motif is a signal for the geranylgeranylation of FBXL2 and is required for its association with cell membranes and the recruitment of substrates to the active SCF(FBXL2) complex.By similarity

Keywords - Domaini

Leucine-rich repeat, Repeat

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
KOG4341 Eukaryota
ENOG410XQ54 LUCA

Ensembl GeneTree

More...
GeneTreei
ENSGT00940000153845

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
CLU_016072_7_1_1

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
A6H779

KEGG Orthology (KO)

More...
KOi
K10268

Identification of Orthologs from Complete Genome Data

More...
OMAi
GCHKLQI

Database of Orthologous Groups

More...
OrthoDBi
1046098at2759

TreeFam database of animal gene trees

More...
TreeFami
TF313434

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
3.80.10.10, 2 hits

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR001810 F-box_dom
IPR001611 Leu-rich_rpt
IPR006553 Leu-rich_rpt_Cys-con_subtyp
IPR032675 LRR_dom_sf

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF12937 F-box-like, 1 hit
PF13516 LRR_6, 4 hits

Simple Modular Architecture Research Tool; a protein domain database

More...
SMARTi
View protein in SMART
SM00256 FBOX, 1 hit
SM00367 LRR_CC, 11 hits

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS50181 FBOX, 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>Sequence (1+)i

<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.

This entry has 1 described isoform and 2 potential isoforms that are computationally mapped.Show allAlign All

A6H779-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MVFSNNDEGL INKKLPKELL LRIFSFLDIV TLCRCAQISK AWNILALDGS
60 70 80 90 100
NWQRIDLFNF QTDVEGRVVE NISKRCGGFL RKLSLRGCIG VGDSSLKTFA
110 120 130 140 150
QNCRNIEHLN LNGCTKITDS TCYSLSRFCS KLKHLDLTSC VSITNSSLKG
160 170 180 190 200
ISEGCRHLEY LNLSWCDQIT KDGVEALVRG CRGLRALLLR GCTQLEDEAL
210 220 230 240 250
KHIQNYCHEL VSLNLQSCSR VTDDGVVQLC RGCPRLQALC LSGCGSLTDA
260 270 280 290 300
SLTALALNCP RLQILEAARC SHLTDAGFTL LARNCHDLEK MDLEECILIT
310 320 330 340 350
DRTLTQLSIH CPKLQALSLS HCELITDDGI LHLSNSPCGH ERLRVLELDN
360 370 380 390 400
CLLITDVALE HLEHCRGLER LELYDCQQVT RAGIKRMRAQ LPHVRVHAYF
410 420
APVTPPTAAG GGGPRLCRCC VIL
Length:423
Mass (Da):46,975
Last modified:July 24, 2007 - 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:i6850504C474C7CE7
GO

<p>In eukaryotic reference proteomes, unreviewed entries that are likely to belong to the same gene are computationally mapped, based on gene identifiers from Ensembl, EnsemblGenomes and model organism databases.<p><a href='/help/gene_centric_isoform_mapping' target='_top'>More...</a></p>Computationally mapped potential isoform sequencesi

There are 2 potential isoforms mapped to this entry.BLASTAlignShow allAdd to basket
EntryEntry nameProtein names
Gene namesLengthAnnotation
A0A3Q1LS43A0A3Q1LS43_BOVIN
F-box/LRR-repeat protein 2
FBXL2
433Annotation 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>
A0A3Q1M4V5A0A3Q1M4V5_BOVIN
F-box/LRR-repeat protein 2
FBXL2
137Annotation score:

Annotation score:1 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>

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
BC146145 mRNA Translation: AAI46146.1

NCBI Reference Sequences

More...
RefSeqi
NP_001092623.1, NM_001099153.2

Genome annotation databases

Ensembl eukaryotic genome annotation project

More...
Ensembli
ENSBTAT00000005160; ENSBTAP00000005160; ENSBTAG00000003952

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
616212

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
bta:616212

<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
BC146145 mRNA Translation: AAI46146.1
RefSeqiNP_001092623.1, NM_001099153.2

3D structure databases

SMRiA6H779
ModBaseiSearch...

Protein-protein interaction databases

STRINGi9913.ENSBTAP00000005160

Proteomic databases

PaxDbiA6H779
PRIDEiA6H779

Genome annotation databases

EnsembliENSBTAT00000005160; ENSBTAP00000005160; ENSBTAG00000003952
GeneIDi616212
KEGGibta:616212

Organism-specific databases

Comparative Toxicogenomics Database

More...
CTDi
25827
VGNCiVGNC:52775 FBXL2

Phylogenomic databases

eggNOGiKOG4341 Eukaryota
ENOG410XQ54 LUCA
GeneTreeiENSGT00940000153845
HOGENOMiCLU_016072_7_1_1
InParanoidiA6H779
KOiK10268
OMAiGCHKLQI
OrthoDBi1046098at2759
TreeFamiTF313434

Gene expression databases

BgeeiENSBTAG00000003952 Expressed in brain and 9 other tissues
ExpressionAtlasiA6H779 baseline

Family and domain databases

Gene3Di3.80.10.10, 2 hits
InterProiView protein in InterPro
IPR001810 F-box_dom
IPR001611 Leu-rich_rpt
IPR006553 Leu-rich_rpt_Cys-con_subtyp
IPR032675 LRR_dom_sf
PfamiView protein in Pfam
PF12937 F-box-like, 1 hit
PF13516 LRR_6, 4 hits
SMARTiView protein in SMART
SM00256 FBOX, 1 hit
SM00367 LRR_CC, 11 hits
PROSITEiView protein in PROSITE
PS50181 FBOX, 1 hit

ProtoNet; Automatic hierarchical classification of proteins

More...
ProtoNeti
Search...

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 nameiFBXL2_BOVIN
<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: A6H779
<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: November 25, 2008
Last sequence update: July 24, 2007
Last modified: June 17, 2020
This is version 81 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 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

Reference proteome
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