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Symbol FBXO25 contributors: mct/npt - updated : 16-05-2011
HGNC name F-box protein 25
HGNC id 13596
Location 8p23.3      Physical location : 356.807 - 419.873
Synonym name
  • F-box only protein 25
  • Synonym symbol(s) FBX25, MGC20256, MGC51975
    TYPE functioning gene
    STRUCTURE 63.10 kb     11 Exon(s)
    10 Kb 5' upstream gene genomic sequence study
    MAPPING cloned Y linked N status provisional
    Physical map
    LOC389699 8 similar to prot GOR LOC392279 8 similar to cadherin 12, type 2 preproprotein; Br-cadherin; cadherin-12; N-cadherin 2; brain-cadherin; neuronal cadherin 2; cadherin, neural type, 2 ADRB3 8p12-p11.2 adrenergic, beta-3-, receptor EIF4EBP1 8p12 eukaryotic translation initiation factor 4E binding protein 1 LOC392167 8 similar to Olfactory receptor 4F3 LOC389606 8 similar to bA476I15.3 (novel protein similar to septin) LOC389700 8 similar to bA110H4.2 (similar to membrane protein) LOC392168 8 hypothetical gene supported by AK127000 LOC153561 8 hypothetical protein LOC153561 LOC169270 8p23.3 hypothetical protein LOC169270 LOC392278 8 similar to Rab coupling protein; Rab-interacting recycling protein; Rab effector protein; rab11-family interacting protein 1 FBXO25 8p23.3 F-box only protein 25 LOC392169 8 LOC392169 INM01 8p23.3 hypothetical protein INM01 LOC389607 8 hypothetical gene supported by AK128318 LOC157697 8p23.3 hypothetical protein LOC157697 LOC392170 8 similar to hypothetical protein P1295.15 LOC346910 8p23.3 similar to putative nuclear protein (4B256) LOC392171 8 similar to ENSANGP00000017949 LOC392172 8 similar to hypothetical protein LOC392173 8 similar to Proline-rich protein MP-2 precursor LOC389608 8 LOC389608 LOC392174 8 similar to stage-specific S antigen homolog DLGAP2 8p23 discs, large (Drosophila) homolog-associated protein 2 CLN8 8p23.3 ceroid-lipofuscinosis, neuronal 8 (epilepsy, progressive with mental retardation) LOC286088 8p23.3 similar to TBP-associated factor 15 isoform 1; TAF15 RNA polymerase II, TATA box binding protein (TBP)-associated factor, 68 kD; TATA box-binding protein-associated factor 2N (RNA-binding protein 56); TATA box binding protein (TBP)- ARHGEF10 8p23 Rho guanine nucleotide exchange factor (GEF) 10 KIAA0711 8p23.3 Homo sapiens KIAA0711 gene product (KIAA0711), mRNA. LOC392175 8 similar to high molecular weight glutenin subunit x MYOM2 8p23.3 myomesin (M-protein) 2, 165kDa
    TRANSCRIPTS type messenger
    identificationnb exonstypebpproduct
    ProteinkDaAAspecific expressionYearPubmed
    11 - 2529 43.3 367 - 1999 10531035
    10 - 2502 - 358 - 1999 10531035
    9 - 2452 - 291 - 1999 10531035
    Type widely
       expressed in (based on citations)
    SystemOrgan level 1Organ level 2Organ level 3Organ level 4LevelPubmedSpeciesStageRna symbol
    Cardiovascularheart   specific Homo sapiens
    Digestiveintestine   highly
     liver   highly Homo sapiens
    Nervousbrain   predominantly Homo sapiens
    Reproductivemale systemprostate  highly
     male systemtestis  highly
    Urinarykidney   highly Homo sapiens
    SystemTissueTissue level 1Tissue level 2LevelPubmedSpeciesStageRna symbol
    Muscularstriatumcardiac   Homo sapiens
    SystemCellPubmedSpeciesStageRna symbol
    Muscularmyocyte Homo sapiens
    cell lineage
    cell lines
    at STAGE
    physiological period fetal, pregnancy
  • placenta
  • higher in a fetal heart than an adult
  • a 40 AA F-box motif
  • an atypical serine residue which is crucial for the hFBX25-Skp1 binding
  • a functional F-box domain that binds to SKP1A and thereby to RBX1 and CUL1
    intraspecies paralog to FBXO32
  • F-box protein family
  • CATEGORY regulatory
    SUBCELLULAR LOCALIZATION     intracellular
  • nuclei-specific in cardiomyocytes
  • localizes to the nucleus as a component of the nuclear body named FANDs (FBXO25-associated nuclear domains), partially colocalizes with CUL1, SKP1, ubiquitinated proteins, and the proteasome
  • basic FUNCTION
  • brain-expressed F-box protein, invoved in phosphorylated dependent ubiquination
  • mitotic regulator, inhibiting the anaphase promoting complex (cyclosome, APC) and preventing mitotic exit in cystostatic factor (CSF) arrested eggs
  • F-box protein that serve as specificity factors for a family of ubiquitin ligases composed of s-phase-kinase associated protein 1, really interesting new gene-box 1, Cullin 1, and F-box protein (SCF1) that are involved in targeting proteins for destruction across the ubiquitin proteasome system
  • is cardiomyocyte-specific and acts as an ubiquitin E3 ligase to target cardiac specific transcription factors
  • has a physiological relevance in cardiac development
  • is a potential mitogen pathway regulator through ELK1 degradation
  • mediates ubiquitination and proteasomal degradation of ELK1 as well as the functional relevance of this effect in the cells
  • CELLULAR PROCESS cell cycle, division, mitosis
    protein, ubiquitin dependent proteolysis
    a component
  • putative component of a E3 ubiquitin protein ligase complex (SCF) with SKP1, CUL1, RBX1 bringing ubiquitin conjugating enzymes to substrates recruited by F-box
    small molecule
  • huntingtin protein can be a target for the nuclear FBXO25 mediated ubiquitination
  • beta-actin, physically interacts through its N-terminus with FBXO25 and is enriched in the FBXO25 nuclear compartments
  • acts as an ubiquitin E3 ligase to target cardiac transcription factors including NKX2-5, ISL1, and HAND1, indicating that cardiac protein homeostasis through FBXO25 has a pivotal impact on cardiac development
  • FBXO25 interacts and mediates ubiquitination and proteasomal degradation of the ELK1 protooncogene regulator
  • mediates ELK1 degradation through the ubiquitin proteasome system and thereby plays a role in regulating the activation of ELK1 pathway in response to mitogens
  • FBXO25 directly interacts with TBX5 and NKX2-5, and controls TBX5 and NKX2-5 transcriptional activity to regulate cardiomyocyte development
  • cell & other