FBXL15

gene
On this page

Also known as MGC11279Fbl15

Summary

FBXL15 (F-box and leucine rich repeat protein 15, HGNC:28155) is a protein-coding gene on chromosome 10q24.32, encoding F-box/LRR-repeat protein 15 (Q9H469). Substrate recognition component of a SCF (SKP1-CUL1-F-box protein) E3 ubiquitin-protein ligase complex which mediates the ubiquitination and subsequent proteasomal degradation of SMURF1, thereby acting as a positive regulator of the BMP signaling pathway.

Involved in several processes, including G2/M transition of mitotic cell cycle; SCF-dependent proteasomal ubiquitin-dependent protein catabolic process; and positive regulation of BMP signaling pathway. Located in cytoplasm. Part of SCF ubiquitin ligase complex.

Source: NCBI Gene 79176 — RefSeq curated summary.

At a glance

  • GWAS associations: 4
  • Clinical variants (ClinVar): 40 total
  • MANE Select transcript: NM_024326

Identifiers

Gene identifiers

FieldValue
HGNC IDHGNC:28155
Approved symbolFBXL15
NameF-box and leucine rich repeat protein 15
Location10q24.32
Locus typegene with protein product
StatusApproved
AliasesMGC11279, Fbl15
Ensembl geneENSG00000107872
Ensembl biotypeprotein_coding
OMIM610287
Entrez79176

Gene structure

Transcript identifiers

Ensembl transcripts: 15 — 14 protein_coding, 1 protein_coding_CDS_not_defined

ENST00000369956, ENST00000425536, ENST00000432590, ENST00000440407, ENST00000457067, ENST00000481808, ENST00000864349, ENST00000864350, ENST00000933208, ENST00000933209, ENST00000948416, ENST00000948417, ENST00000948418, ENST00000948419, ENST00000948420

RefSeq mRNA: 2 — MANE Select: NM_024326 NM_001387294, NM_024326

CCDS: CCDS31273

Canonical transcript exons

ENST00000369956 — 4 exons

ExonStartEnd
ENSE00000811530102422804102423136
ENSE00001290000102420836102421182
ENSE00001782501102421787102422292
ENSE00002229252102421354102421507

Expression profiles

Bgee: expression breadth ubiquitous, 202 present calls, max score 91.73.

FANTOM5 (CAGE): breadth ubiquitous, TPM avg 3.9818 / max 50.9335, expressed in 1509 samples.

FANTOM5 promoters (2 alternative TSS)

Promoter IDTPM avgSamples expressed
1067143.77581504
1067130.206086

Top tissues by expression

265 total, by Bgee expression score (0-100, higher = more expressed):

TissueAnatomy IDExpression scoreQuality
adenohypophysisUBERON:000219691.73gold quality
mucosa of transverse colonUBERON:000499191.63gold quality
right frontal lobeUBERON:000281091.31gold quality
anterior cingulate cortexUBERON:000983591.10gold quality
pituitary glandUBERON:000000791.08gold quality
cingulate cortexUBERON:000302790.95gold quality
Brodmann (1909) area 9UBERON:001354090.25gold quality
right hemisphere of cerebellumUBERON:001489089.52gold quality
dorsolateral prefrontal cortexUBERON:000983489.46gold quality
prefrontal cortexUBERON:000045188.65gold quality
nucleus accumbensUBERON:000188288.43gold quality
muscle layer of sigmoid colonUBERON:003580587.90gold quality
neocortexUBERON:000195087.86gold quality
left adrenal glandUBERON:000123487.82gold quality
granulocyteCL:000009487.81gold quality
apex of heartUBERON:000209887.81gold quality
left adrenal gland cortexUBERON:003582587.71gold quality
right adrenal glandUBERON:000123387.63gold quality
caudate nucleusUBERON:000187387.60gold quality
frontal cortexUBERON:000187087.59gold quality
cerebellar hemisphereUBERON:000224587.56gold quality
cerebellar cortexUBERON:000212987.40gold quality
primary visual cortexUBERON:000243687.26gold quality
middle temporal gyrusUBERON:000277187.26gold quality
body of stomachUBERON:000116187.17gold quality
transverse colonUBERON:000115787.13gold quality
putamenUBERON:000187487.10gold quality
right adrenal gland cortexUBERON:003582787.07gold quality
cerebral cortexUBERON:000095686.74gold quality
cerebellumUBERON:000203786.34gold quality

Single-cell (SCXA)

Detected in 1 experiment(s), a significant marker in 1.

ExperimentMarker?Max mean expression
E-ANND-3no0.00

Regulation

Is transcription factor: no

miRNA regulators (miRDB)

9 targeting FBXL15, top 30 by miRDB confidence (max_score; target_count = how many genes the miRNA targets in total — lower means more specific):

miRNAMax scoreAvg scoremiRNA target_count
HSA-MIR-426799.9666.532368
HSA-MIR-4446-5P99.7269.192544
HSA-MIR-6837-5P99.2565.471632
HSA-MIR-455-3P98.9467.68878
HSA-MIR-6796-3P98.6865.49689
HSA-MIR-3928-5P98.5067.48980
HSA-MIR-6806-3P98.5067.31980
HSA-MIR-6883-3P97.9767.35643
HSA-MIR-127-5P97.7867.64869

Literature-anchored findings (GeneRIF, showing 1)

  • We identified the known APC/C regulator Cdh1 and the F-box protein Fbxl15 as specific modulators of N-cyclin B1-luciferase steady-state levels and turnover. Collectively, our studies suggest that analyzing the steady-state levels of luciferase fusion proteins in parallel facilitates identification of specific regulators of protein turnover. (PMID:28296622)

Cross-species orthologs

30 orthologs

OrganismSymbolGene ID
danio_reriofbxl15ENSDARG00000005284
mus_musculusFbxl15ENSMUSG00000025226
rattus_norvegicusFbxl15ENSRNOG00000019509
drosophila_melanogasterCG15056FBGN0030918
drosophila_melanogasterCG8272FBGN0033337
drosophila_melanogasterCG9003FBGN0033639
drosophila_melanogasterSkp2FBGN0037236
drosophila_melanogasterCG14891FBGN0038445
drosophila_melanogasterCG5003FBGN0039554
drosophila_melanogasterFipoQFBGN0039667
caenorhabditis_elegansWBGENE00007206
caenorhabditis_elegansWBGENE00007208
caenorhabditis_elegansWBGENE00007887
caenorhabditis_elegansWBGENE00008177
caenorhabditis_elegansWBGENE00009689
caenorhabditis_elegansgadr-6WBGENE00009823
caenorhabditis_elegansWBGENE00010365
caenorhabditis_elegansK05C4.9WBGENE00010585
caenorhabditis_elegansWBGENE00012655
caenorhabditis_elegansWBGENE00015350
caenorhabditis_elegansWBGENE00018561
caenorhabditis_elegansWBGENE00018613
caenorhabditis_elegansWBGENE00018766
caenorhabditis_elegansWBGENE00019239
caenorhabditis_elegansWBGENE00020884
caenorhabditis_elegansWBGENE00021053
caenorhabditis_elegansWBGENE00021180
caenorhabditis_eleganszeel-1WBGENE00021463
caenorhabditis_elegansWBGENE00044459
caenorhabditis_elegansgadr-5WBGENE00045058

Paralogs (15): FBXL3 (ENSG00000005812), FBXL19 (ENSG00000099364), FBXL20 (ENSG00000108306), FBXL4 (ENSG00000112234), FBXL5 (ENSG00000118564), FBXL16 (ENSG00000127585), SKP2 (ENSG00000145604), FBXL17 (ENSG00000145743), FBXL2 (ENSG00000153558), FBXL18 (ENSG00000155034), FBXL13 (ENSG00000161040), FBXL14 (ENSG00000171823), FBXL6 (ENSG00000182325), FBXL7 (ENSG00000183580), FBXL22 (ENSG00000197361)

Protein

Protein identifiers

F-box/LRR-repeat protein 15Q9H469 (reviewed: Q9H469)

Alternative names: F-box only protein 37

All UniProt accessions (6): Q9H469, A0A0C4DFV0, X6RCZ8, X6RGT4, X6RHD7, X6RJB2

UniProt curated annotations — full annotation on UniProt →

Function. Substrate recognition component of a SCF (SKP1-CUL1-F-box protein) E3 ubiquitin-protein ligase complex which mediates the ubiquitination and subsequent proteasomal degradation of SMURF1, thereby acting as a positive regulator of the BMP signaling pathway. Required for dorsal/ventral pattern formation and bone mass maintenance. Also mediates ubiquitination of SMURF2 and WWP2.

Subunit / interactions. Part of the SCF (SKP1-CUL1-F-box) E3 ubiquitin-protein ligase complex SCF(FBXL15) composed of CUL1, SKP1, RBX1 and FBXL15.

Subcellular location. Cytoplasm.

Pathway. Protein modification; protein ubiquitination.

Similarity. Belongs to the FBXL15 family.

RefSeq proteins (2): NP_001374223, NP_077302* (*=MANE)

Domains & families (InterPro)

IDNameType
IPR001810F-box_domDomain
IPR006553Leu-rich_rpt_Cys-con_subtypRepeat
IPR032675LRR_dom_sfHomologous_superfamily
IPR036047F-box-like_dom_sfHomologous_superfamily
IPR057207FBXL15_LRRDomain

Pfam: PF00646, PF25372

UniProt features (10 total): repeat 5, chain 1, domain 1, region of interest 1, modified residue 1, sequence conflict 1

Structure

Experimental structures (PDB)

0 structures.

Predicted structure (AlphaFold)

ModelpLDDTFraction very-high
AF-Q9H469-F190.120.84

Functional residue map

Curated UniProt residues grouped by drug-discovery relevance — catalytic, ligand-binding, modification, and mutation-validated positions. Source: UniProtKB sequence features.

Post-translational modifications (1): 1

Function

Pathways and Gene Ontology

Reactome pathways

2 pathways

IDPathway
R-HSA-8951664Neddylation
R-HSA-983168Antigen processing: Ubiquitination & Proteasome degradation

MSigDB gene sets: 96 (showing top): GOBP_REGULATION_OF_CELLULAR_RESPONSE_TO_GROWTH_FACTOR_STIMULUS, REACTOME_ADAPTIVE_IMMUNE_SYSTEM, REACTOME_CLASS_I_MHC_MEDIATED_ANTIGEN_PROCESSING_PRESENTATION, REACTOME_ANTIGEN_PROCESSING_UBIQUITINATION_PROTEASOME_DEGRADATION, GOBP_CELL_CYCLE_PHASE_TRANSITION, GOBP_MACROMOLECULE_CATABOLIC_PROCESS, GOBP_DORSAL_VENTRAL_PATTERN_FORMATION, FERREIRA_EWINGS_SARCOMA_UNSTABLE_VS_STABLE_DN, GOBP_POSITIVE_REGULATION_OF_BMP_SIGNALING_PATHWAY, GARGALOVIC_RESPONSE_TO_OXIDIZED_PHOSPHOLIPIDS_BLUE_DN, GOBP_BONE_MINERALIZATION, GOBP_REGULATION_OF_TRANSMEMBRANE_RECEPTOR_PROTEIN_SERINE_THREONINE_KINASE_SIGNALING_PATHWAY, GOBP_POST_TRANSLATIONAL_PROTEIN_MODIFICATION, GOBP_MITOTIC_CELL_CYCLE, GOBP_CELL_CYCLE_G2_M_PHASE_TRANSITION

GO Biological Process (6): G2/M transition of mitotic cell cycle (GO:0000086), dorsal/ventral pattern formation (GO:0009953), protein ubiquitination (GO:0016567), bone mineralization (GO:0030282), positive regulation of BMP signaling pathway (GO:0030513), SCF-dependent proteasomal ubiquitin-dependent protein catabolic process (GO:0031146)

GO Molecular Function (1): protein binding (GO:0005515)

GO Cellular Component (3): cytoplasm (GO:0005737), cytosol (GO:0005829), SCF ubiquitin ligase complex (GO:0019005)

Reactome top-level categories

Rollup of top-2 pathways:

CategoryPathways
Post-translational protein modification1
Class I MHC mediated antigen processing & presentation1

GO top-level categories

Rollup of top GO terms by namespace:

CategoryTerms
cellular anatomical structure2
mitotic cell cycle1
mitotic cell cycle phase transition1
cell cycle G2/M phase transition1
regionalization1
protein modification by small protein conjugation1
ossification1
biomineral tissue development1
BMP signaling pathway1
regulation of BMP signaling pathway1
positive regulation of transmembrane receptor protein serine/threonine kinase signaling pathway1
proteasome-mediated ubiquitin-dependent protein catabolic process1
binding1
intracellular anatomical structure1
cytoplasm1
cullin-RING ubiquitin ligase complex1

Protein interactions and networks

STRING

904 interactions, top by confidence (×1000):

Protein AProtein BPartner UniProtScore
FBXL15TIPINQ9BVW5810
FBXL15TIMELESSQ9UNS1755
FBXL15FBXO3Q9UK99596
FBXL15CUEDC2Q9H467550
FBXL15SKP1P34991543
FBXL15CLOCKO15516528
FBXL15CUL1Q13616528
FBXL15PER3P56645522
FBXL15FBXO33Q7Z6M2507
FBXL15FBXO45P0C2W1504
FBXL15BMAL1O00327497
FBXL15TMEM150AQ86TG1497
FBXL15SLC68A1Q14CX5490
FBXL15CEP97Q8IW35489
FBXL15FBXW2Q9UKT8488

IntAct

41 interactions, top by confidence:

ABTypeScore
FBXL15SKP1psi-mi:“MI:0914”(association)0.840
FBXL15CUL1psi-mi:“MI:0914”(association)0.840
COPS6RHOBTB1psi-mi:“MI:0914”(association)0.730
SKP1MYCBP2psi-mi:“MI:0914”(association)0.640
SMURF1FBXL15psi-mi:“MI:0915”(physical association)0.640
FBXL15SMURF1psi-mi:“MI:0407”(direct interaction)0.640
FBXL15SMURF1psi-mi:“MI:0915”(physical association)0.640
FBXL15SMURF1psi-mi:“MI:0403”(colocalization)0.640
CUL1FBXO21psi-mi:“MI:0914”(association)0.600
FBXL15SMURF2psi-mi:“MI:0407”(direct interaction)0.600
FBXL15SMURF2psi-mi:“MI:0915”(physical association)0.600
FBXL15RBX1psi-mi:“MI:0914”(association)0.530
HSP90AB1FBXL15psi-mi:“MI:0915”(physical association)0.400
FBXL15NEDD4psi-mi:“MI:0915”(physical association)0.400
NEDD4LFBXL15psi-mi:“MI:0915”(physical association)0.400
HECW1FBXL15psi-mi:“MI:0915”(physical association)0.400
FBXL15HECW2psi-mi:“MI:0915”(physical association)0.400
FBXL15ITCHpsi-mi:“MI:0915”(physical association)0.400
WWP1FBXL15psi-mi:“MI:0915”(physical association)0.400
WWP2FBXL15psi-mi:“MI:0915”(physical association)0.400
Skp1XPO1psi-mi:“MI:0914”(association)0.350
CUL1LGALS8psi-mi:“MI:0914”(association)0.350
COPS6DDX3Xpsi-mi:“MI:0914”(association)0.350
SKP1BHLHE40psi-mi:“MI:0914”(association)0.350

BioGRID (55): FBXL15 (Two-hybrid), FBXL15 (Two-hybrid), RORC (Two-hybrid), SKP1 (Affinity Capture-MS), CUL1 (Affinity Capture-MS), ARIH1 (Affinity Capture-MS), SKP1 (Affinity Capture-Western), FBXL15 (Affinity Capture-MS), CUL1 (Affinity Capture-MS), SKP1 (Affinity Capture-MS), ARIH1 (Affinity Capture-MS), FBXL15 (Reconstituted Complex), FBXL15 (Affinity Capture-MS), FBXL15 (Affinity Capture-MS), FBXL15 (Affinity Capture-MS)

ESM2 similar proteins: A6NED2, D2HEW7, D3ZZC3, D4A2K4, E1BNS0, E2RKN7, O35709, O60294, O94819, Q08BL9, Q08DS0, Q0D2K2, Q2TBA0, Q2WGJ6, Q3B7M1, Q3U410, Q4R828, Q53GT1, Q53HC5, Q5BK60, Q5U575, Q5ZJ37, Q66HD2, Q6DEL7, Q6E804, Q6INL2, Q6NYM1, Q6PF15, Q6TDP4, Q8BFQ9, Q8BGY4, Q8BNW9, Q8BSF5, Q8BYR1, Q8C3F7, Q8N239, Q8N4N3, Q8NEP7, Q8R2P1, Q8TD43

Diamond homologs: B5X441, D4ABB4, E1BNS0, E2RKN7, E6ZHJ8, Q5XGC0, Q6NW95, Q7SZ73, Q91W61, Q9H469

SIGNOR signaling

2 interactions.

AEffectBMechanism
FBXL15“down-regulates quantity by destabilization”SMURF1binding
FBXL15“up-regulates activity”“Cullin 1-RBX1-Skp1”binding

Enriched among interaction partners

Reactome pathways and GO biological processes over-represented among this gene’s 32 IntAct physical interaction partners (hypergeometric vs the genome-wide background, BH-FDR, gene-set size 15–500, ranked by fold). A functional readout of the neighbourhood — distinct from this gene’s own memberships above, and biased toward well-studied / hub proteins, so read it as themes rather than proof.

Reactome pathways:

PathwayPartnersFoldFDR
Downregulation of TGF-beta receptor signaling572.8×7e-07
Degradation of GLI1 by the proteasome540.0×7e-06
Regulation of RUNX2 expression and activity638.8×7e-07
Hedgehog ‘on’ state528.3×4e-05
Antigen processing: Ubiquitination & Proteasome degradation1215.9×9e-10
Class I MHC mediated antigen processing & presentation615.0×8e-05
Neddylation711.8×5e-05
Adaptive Immune System66.4×3e-03

GO biological processes:

GO termPartnersFoldFDR
protein monoubiquitination668.8×3e-08
protein K48-linked ubiquitination633.7×1e-06
ubiquitin-dependent protein catabolic process922.3×3e-08
protein ubiquitination1317.9×2e-11
proteasome-mediated ubiquitin-dependent protein catabolic process915.7×3e-07

Disease & clinical

Clinical variants and AI predictions

ClinVar

40 variants total. Per-class counts are floors (≥ shown; pagination cap):

ClassificationCount (floor)
Pathogenic0
Likely pathogenic0
Uncertain significance32
Likely benign1
Benign0

Top pathogenic / likely-pathogenic (0)

SpliceAI

717 predictions. Top by Δscore:

VariantEffectΔscore
10:102419877:A:Cdonor_gain1.0000
10:102421210:G:Tdonor_gain1.0000
10:102421349:CGCAG:Cacceptor_loss1.0000
10:102421351:CAGGT:Cacceptor_loss1.0000
10:102421352:A:ACacceptor_loss1.0000
10:102421352:A:AGacceptor_gain1.0000
10:102421353:G:GGacceptor_gain1.0000
10:102421353:G:GTacceptor_loss1.0000
10:102421508:GTGAG:Gdonor_loss1.0000
10:102422274:TCGG:Tdonor_gain1.0000
10:102422277:G:GTdonor_gain1.0000
10:102419873:CCTAA:Cdonor_gain0.9900
10:102419880:TG:Tdonor_gain0.9900
10:102421179:TCAGG:Tdonor_loss0.9900
10:102421180:CAGG:Cdonor_loss0.9900
10:102421181:AGGTA:Adonor_loss0.9900
10:102421183:G:GCdonor_loss0.9900
10:102421184:T:Gdonor_loss0.9900
10:102421210:G:GTdonor_gain0.9900
10:102421225:G:GTdonor_gain0.9900
10:102421226:G:Tdonor_gain0.9900
10:102421346:A:AGacceptor_gain0.9900
10:102421352:AG:Aacceptor_gain0.9900
10:102421353:GG:Gacceptor_gain0.9900
10:102421353:GGTT:Gacceptor_gain0.9900
10:102421353:GGTTC:Gacceptor_gain0.9900
10:102421504:GCAG:Gdonor_gain0.9900
10:102421508:G:GGdonor_gain0.9900
10:102422288:GTCAG:Gdonor_loss0.9900
10:102422289:TCAGG:Tdonor_loss0.9900

AlphaMissense

1859 scored. Top likely-pathogenic:

VariantProtein changeam_pathogenicity
10:102422256:T:AL226H0.998
10:102422211:T:AV211D0.997
10:102422250:T:AL224H0.997
10:102422250:T:CL224P0.997
10:102422097:T:AL173H0.996
10:102422188:C:AN203K0.996
10:102422188:C:GN203K0.996
10:102422256:T:CL226P0.996
10:102422241:T:AL221H0.995
10:102422264:T:CC229R0.995
10:102422266:C:GC229W0.995
10:102422854:G:AC255Y0.995
10:102422019:T:AL147H0.994
10:102422223:C:AA215D0.994
10:102422855:C:GC255W0.994
10:102422265:G:AC229Y0.993
10:102422274:T:AV232D0.993
10:102422839:T:CL250P0.993
10:102422097:T:CL173P0.992
10:102422172:T:AL198H0.992
10:102422289:T:AV237D0.992
10:102422174:T:CS199P0.991
10:102421442:A:CS48R0.990
10:102421444:C:AS48R0.990
10:102421444:C:GS48R0.990
10:102422035:G:CW152C0.990
10:102422035:G:TW152C0.990
10:102422100:C:TT174I0.990
10:102422130:T:AI184N0.990
10:102422256:T:GL226R0.990

dbSNP variants (sampled 300 via entrez): RS1000872443 (10:102422498 T>C,G), RS1001330523 (10:102423001 G>A), RS1002159288 (10:102421576 G>A,T), RS1002206188 (10:102421920 C>T), RS1002877708 (10:102419565 C>A), RS1005086808 (10:102418937 C>G,T), RS1005117859 (10:102419155 C>T), RS1005175856 (10:102420657 T>C,G), RS1005682557 (10:102421244 G>A,C,T), RS1005785325 (10:102421907 C>T), RS1006029737 (10:102418907 C>A,G,T), RS1006175809 (10:102419346 G>A), RS1007008490 (10:102422474 C>CT), RS1007311214 (10:102420716 T>C), RS1007342241 (10:102420996 T>G)

Disease associations

OMIM: gene MIM:610287 | disease phenotypes:

GenCC curated gene-disease

Mondo (0):

Orphanet (0):

HPO phenotypes

0 total (0 of 0 shown, HPO-id order):

GWAS associations

4 associations (top):

StudyTraitp-value
GCST001942_1Prostate cancer5.000000e-10
GCST005956_50Waist-to-hip ratio adjusted for BMI8.000000e-06
GCST005958_15Waist-to-hip ratio adjusted for BMI (age >50)4.000000e-06
GCST005962_36Waist-to-hip ratio adjusted for BMI x sex x age interaction (4df test)6.000000e-07

EFO canonical traits (3, from GWAS)

EFO IDTrait name
EFO:0007788BMI-adjusted waist-hip ratio
EFO:0008007age at assessment
EFO:0008343sex interaction measurement

Drugs & pharmacology

Drug and pharmacology data

Is drug target: no

PharmGKB: 1 entry (VIP=true, CPIC=false)

CTD chemical–gene interactions

23 total (human), top 23 by PubMed support.

ChemicalActions (top 5)PubMed papers
Air Pollutantsaffects expression, increases abundance, decreases expression2
Hydrogen Peroxideaffects expression2
Valproic Acidaffects expression, increases expression2
bisphenol Adecreases expression1
sodium arsenitedecreases expression1
di-n-butylphosphoric acidaffects expression1
perfluorooctane sulfonic acidincreases expression1
abrineincreases expression1
bisphenol Saffects cotreatment, decreases expression1
Dexamethasoneaffects cotreatment, decreases expression1
Indomethacinaffects cotreatment, decreases expression1
Ketoconazoledecreases expression1
Leadaffects expression1
Ozoneincreases abundance, affects expression1
Smokedecreases expression1
Tobacco Smoke Pollutiondecreases expression1
1-Methyl-3-isobutylxanthineaffects cotreatment, decreases expression1
Aflatoxin B1decreases expression1
Cadmium Chloridedecreases expression1
Copper Sulfatedecreases expression1
Acrylamidedecreases expression1
Vitamin K 3affects expression1
Particulate Matterdecreases expression, increases abundance1

Clinical trials (associated diseases)

0 trials via MONDO — disease-level, not drug-specific.

No linked Atlas pages yet — the cross-entity mesh grows as the corpus expands.