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Symbol SPOP contributors: mct/pgu - updated : 11-05-2017
HGNC name speckle-type POZ protein
HGNC id 11254
Location 17q21.33      Physical location : 47.676.247 - 47.755.525
Synonym name
  • Pdx1 C terminus-interacting factor-1
  • Roadkill homolog 1
  • HIB homolog 1
  • Synonym symbol(s) TEF2, PCIF1, BTBD32
    TYPE functioning gene
    STRUCTURE 79.28 kb     12 Exon(s)
    10 Kb 5' upstream gene genomic sequence study
    MAPPING cloned Y linked N status provisional
    Physical map
    PRAC 17q21 hypothetical protein FLJ20920 HOXB13 17q21.3 homeo box B13 FLJ35808 17q21.33 hypothetical protein FLJ35808 NDP52 17q21.3 hypothetical protein FLJ35808 LOC388399 17 similar to SMT3 suppressor of mif two 3 homolog 2 ATP5G1 17q21.32 ATP synthase, H+ transporting, mitochondrial F0 complex, subunit c (subunit 9), isoform 1 FLJ13855 17q21.33 hypothetical protein FLJ13855 EAP30 17q21.33 EAP30 subunit of ELL complex GIP 17q21.31 gastric inhibitory polypeptide IMP-1 17q21.33 IGF-II mRNA-binding protein 1 GALGT2 17q21.3 beta 1,4 N-acetylgalactosaminyltransferase GNGT2 17q21.3 guanine nucleotide binding protein (G protein), gamma transducing activity polypeptide 2 NESH 17q21.3 guanine nucleotide binding protein (G protein), gamma transducing activity polypeptide 2 PHOSPHO1 17q21.32 phosphatase, orphan 1 LOC124871 17q21.33 hypothetical gene LOC124871 KIAA0924 17q21.32 hypothetical gene LOC124871 PHB 17q21.3 prohibitin LOC388400 17 similar to Eukaryotic translation initiation factor 4E (eIF4E) (eIF-4E) (mRNA cap-binding protein) (eIF-4F 25 kDa subunit) NGFR 17q21.31 nerve growth factor receptor (TNFR superfamily, member 16) NXPH3 17q21.31 neurexophilin 3 SPOP 17q22 speckle-type POZ protein SLC35B1 17q21.3-q22 solute carrier family 35, member B1 LOC81558 17q21.33 C/EBP-induced protein MYST2 17q21.32 MYST histone acetyltransferase 2 TAC4 17 tachykinin 4 (hemokinin) LOC124865 17q21.33 similar to ribosomal protein P0-like protein; 60S acidic ribosomal protein PO; ribosomal protein, large, P0-like DLX4 17q21-q22 distal-less homeobox 4 DLX3 17q21.3-q22 distal-less homeo box 3 ITGA3 17q22-q23 integrin, alpha 3 (antigen CD49C, alpha 3 subunit of VLA-3 receptor) PDK2 17q21.3 pyruvate dehydrogenase kinase, isoenzyme 2 LOC201191 17q21.33 hypothetical protein LOC201191 PPP1R9B 17q21-q22 protein phosphatase 1, regulatory subunit 9B, spinophilin SGCA 17q21 sarcoglycan, alpha (50kDa dystrophin-associated glycoprotein) HILS1 17q21.33 spermatid-specific linker histone H1-like protein COL1A1 17q21.31-q22.15 collagen, type I, alpha 1 FLJ33318 17q21.33 hypothetical protein FLJ33318 XYLT2 17q21.3-17q22 xylosyltransferase II MRPL27 17q21.3-q22 mitochondrial ribosomal protein L27 FLJ31364 PRO1855 17q21.33 hypothetical protein PRO1855 FLJ20920 17q21.33 hypothetical protein FLJ20920
    identificationnb exonstypebpproduct
    ProteinkDaAAspecific expressionYearPubmed
    11 - 2982 42 374 - 1997 9414087
    12 - 3105 42 374 - 1997 9414087
    11 - 3053 42 374 - 1997 9414087
    11 - 2983 42 374 - 1997 9414087
    12 - 3034 42 374 - 1997 9414087
    10 - 2931 42 374 - 1997 9414087
       expressed in (based on citations)
    cell lineage
    cell lines
    at STAGE
  • N-terminal MATH domain
  • BTB/POZ domain that is important for the induction of apoptosis in transfected cells
  • mono polymer dimer
  • TD/POZ family
  • CATEGORY transcription factor
    SUBCELLULAR LOCALIZATION     intracellular
    intracellular,nucleus,nucleoplasm,nuclear bodies,nuclear speckles
    basic FUNCTION
  • SPOP/CUL3-ubiquitin ligase plays an essential role in the control of DAXX level and, thus, in the regulation of DAXX-mediated cellular processes, including transcriptional regulation and apoptosis
  • essential role of SPOP in ESR1 ubiquitination by the Cullin3-based E3 ubiquitin ligase complex
  • nuclear protein that inhibits PDX1 transactivation
  • restoration of SPOP expression inhibited NCOA3-mediated oncogenic signaling and tumorigenesis, thus positioning SPOP as a tumor suppressor
  • is an adaptor protein that links BRMS1 to CUL3
  • promotes senescence, an important tumor suppression mechanism, by targeting the SENP7 deSUMOylase for degradation
  • is an important positive regulator of IHH signaling and skeletal development
  • regulates prostate epithelial cell proliferation and promotes ubiquitination and turnover of MYC oncoprotein
  • is a potential driver of prostate cancer development and progression
    a component
  • dimeric SPOP-CUL3 assembly involving a conserved helical structure C-terminal of BTB domains
    small molecule
  • interacting with SUFU and GLI1, GLI2, GLI3 (SUFU regulates GLI protein levels by antagonizing the activity of SPOP, a conserved GLI-degrading factor)
  • targets PDX1 for ubiquitination and proteasomal degradation
  • cullin 3 (CUL3)-based ubiquitin ligase, responsible for NCOA3 ubiquitination and proteolysis
  • CUL3, a component of E3 ubiquitin ligase, is a new binding partner of BRMS1 and the interaction between BRMS1 and CUL3 is mediated by the SPOP adaptor protein
  • DZIP1 regulates the stability of SPOP independent of its function in ciliogenesis
  • SPOP functions as a tumor suppressor to negatively regulate the stability of the ERG oncoprotein in prostate cancer
  • SPOP acts as a tumor suppressor by promoting senescence through degrading SENP7
  • targets GlI2 and GLI3 for degradation and negatively regulates Hedgehog (Hh) signaling
  • novel regulation of SIRT2 by SPOP mediated degradation, which is important for the growth of lung tumor cells
  • SPOP is a tumor suppressor to down-regulate EGLN2 in prostate cancer
  • acts as an adaptor protein of the CUL3-RBX1 E3 ubiquitin ligase complex that generally recruits substrates for ubiquitination and subsequent degradation
  • SPOP recognizes a Ser/Thr (S/T)-rich motif in the C-terminal region of INF2 and triggers atypical polyubiquitination of INF2
  • INF2 is important for SPOP inactivation-induced prostate cancer cell migration and invasion
  • cell & other
    corresponding disease(s)
    Other morbid association(s)
    TypeGene ModificationChromosome rearrangementProtein expressionProtein Function
    tumoral     --other  
    frequently dysregulated in prostate adenocarcinoma (PC), via either somatic mutations or mRNA downregulation
    tumoral     --over  
    in clear cell renal cell carcinoma
    tumoral germinal mutation      
    mutation in SPOP that tracks with familial prostate cancer
    tumoral somatic mutation      
    in prostate cancer
    Variant & Polymorphism
    Candidate gene
  • is a new marker and prognostic factor for clear cell RCC
  • Therapy target
  • defects in chondrocyte and osteoblast differentiation in Spop-null mutant mice