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Symbol SRPK1 contributors: mct/npt/pgu - updated : 15-01-2010
HGNC name SFRS protein kinase 1
HGNC id 11305
Location 6p21.31      Physical location : 35.800.811 - 35.888.957
Synonym name
  • serine/arginine protein kinase specific for the SR (serine/arginine-rich domain) family of splicing factors
  • SR protein kinase 1
  • Synonym symbol(s) SFRSK1
    TYPE functioning gene
    STRUCTURE 88.14 kb     16 Exon(s)
    10 Kb 5' upstream gene genomic sequence study
    MAPPING cloned Y linked N status provisional
    Physical map
    SPDEF 6p21.3 SAM pointed domain containing ets transcription factor C6orf106 6p21.31 chromosome 6 open reading frame 106 MGC4614 6p21.31 hypothetical protein MGC4614 LOC391916 6 hypothetical gene supported by BC001032; NM_001014 SNRPC 6p21.2 small nuclear ribonucleoprotein polypeptide C C6orf107 6p21 chromosome 6 open reading frame 107 TAF11 6p21 TAF11 RNA polymerase II, TATA box binding protein (TBP)-associated factor, 28kDa ANKS1 6p21.31 ankyrin repeat and SAM domain containing 1 TCP11 6p21.2 t-complex 11 (mouse) CEGF3 6p21.3 CUB domain and EGF-like repeat containing 3 ZNF76 6p21.2 zinc finger protein 76 (expressed in testis) DEF6 6p21.33-p21.1 differentially expressed in FDCP 6 homolog (mouse) PPARD 6p21.2-p21.1 peroxisome proliferative activated receptor, delta MKRNP2 6p21.1 makorin, ring finger protein, pseudogene 2 FANCE 6p22-p21 Fanconi anemia, complementation group E RPL10A 6p21.3 ribosomal protein L10a TEAD3 6p21.2 TEA domain family member 3 TULP1 6p21.3 tubby like protein 1 LOC389382 6 similar to Rps15a protein FKBP5 6p21.3-p21.2 FK506 binding protein 5 C6orf81 6p21.31 chromosome 6 open reading frame 81 LOC389383 6 similar to AAAL3045 LOC340204 6p21.31 similar to precursor peptide CLPS 6p22-p21.1 colipase, pancreatic MGC33835 6p21.31 hypothetical protein MGC33835 SRPK1 6p213-p21.2 SFRS protein kinase 1 SLC26A8 6p21 solute carrier family 26, member 8 MAPK14 6p21.2 mitogen-activated protein kinase 14 MAPK13 6p21.1 mitogen-activated protein kinase 13 BRPF3 6p21 bromodomain and PHD finger containing, 3 PNPLA1 6p21.31 patatin-like phospholipase domain containing 1 LOC389384 6 similar to RIKEN cDNA 4930539E08 ETV7 6p21 ets variant gene 7 (TEL2 oncogene ) STEPP 6p21.31 small testis-specific peroxisomal protein C6orf69 6p21.31 chromosome 6 open reading frame 69 STK38 6p21 serine/threonine kinase 38 SFRS3 11p15.1 splicing factor, arginine/serine-rich 3 LOC389385 6 similar to Cytosol aminopeptidase (Leucine aminopeptidase) (LAP) (Leucyl aminopeptidase) (Proline aminopeptidase) (Prolyl aminopeptidase) LOC389386 6 similar to Cytosol aminopeptidase (Leucine aminopeptidase) (LAP) (Leucyl aminopeptidase) (Proline aminopeptidase) (Prolyl aminopeptidase) CDKN1A 6p21.2 cyclin-dependent kinase inhibitor 1A (p21, Cip1) LOC346190 6p21.31 similar to hypothetical protein FLJ31614 LOC391917 6 similar to putative G-protein coupled receptor CPNE5 6p21.1 copine V PPIL1 6p21.1 peptidylprolyl isomerase (cyclophilin)-like 1 C6orf89 6p21.31 chromosome 6 open reading frame 89 PI16 6p21.31 protease inhibitor 16 MTCH1 6pter-p24.1 mitochondrial carrier homolog 1 (C. elegans) FGD2 6p21.2 FGD1 family, member 2 LOC285849 6p21.31 similar to cytochrome c oxidase subunit VIa polypeptide 1 precursor; cytochrome C oxidase subunit VIa homolog
    TRANSCRIPTS type messenger
    identificationnb exonstypebpproduct
    ProteinkDaAAspecific expressionYearPubmed
    - splicing 4760 - 862 - 2009 19674106
  • also called SRPK1a
  • interacts with the nuclear matrix protein scaffold attachment factor B1 (SAFB1) via its unique N-terminal domain, which differentiates it from SRPK1
  • 16 - 4361 - 655 - 2001 11509566
       expressed in (based on citations)
    SystemOrgan level 1Organ level 2Organ level 3Organ level 4LevelPubmedSpeciesStageRna symbol
    Endocrinepancreas   predominantly Homo sapiens
    Reproductivemale systemtestis  highly
    SystemTissueTissue level 1Tissue level 2LevelPubmedSpeciesStageRna symbol
    Blood / Hematopoieticbone marrow   
    cell lineage
    cell lines
    at STAGE
  • RS domain protein kinase
    interspecies ortholog to murine Srpk1
    intraspecies homolog to SRPK2
  • SRPK family of kinases
  • CMGC Ser/Thr protein kinase family
  • CATEGORY enzyme , regulatory
    SUBCELLULAR LOCALIZATION     intracellular
    intracellular,nucleus,nucleoplasm,nuclear bodies,nuclear speckles
  • key pre-mRNA splicing factor in the nuclear speckles
  • both SRPK1 and SRPK2 are primarily localized in the cytoplasm despite having putative nuclear localization signals
  • basic FUNCTION
  • highly specific for the serine/arginine repeats, modulating the affinity between RS domain containing proteins and regulating the cellular distribution of their substrates
  • cell cycle regulator
  • controling localization of splicing factors
  • playing a role in the condensation of sperm chromatin
  • may play an important role in linking signaling to RNA metabolism in higher eukaryotic cells
  • phosphorylate serine/arginine (SR) domain-containing proteins in nuclear speckles and mediate the pre-mRNA splicing
  • involved in the molecular chaperone system that has been implicated in numerous signal transduction pathways and provide mechanistic insights into complex regulation of SR protein phosphorylation and alternative splicing in response to developmental cues and cellular signaling
  • in addition to phosphorylating SR proteins and regulating pre-mRNA splicing, SRPK1 and SRPK2 also play an important role in cell proliferation and apoptosis
  • CELLULAR PROCESS nucleotide, chromatin organization, remodeling
    nucleotide, RNA splicing
    a component
    small molecule
  • SAFB (with SRPK1a)
  • directly binds to the cochaperones DNAJC8 and AHA1, which mediate dynamic interactions of the kinase with the major molecular chaperones Hsp70 and Hsp90 in mammalian cells
  • WT1 bound to the SRPK1 promoter, and repressed expression through a specific WT1 binding site
  • cell & other
    Other regulated by SAFB proteins (regulators of SRPK1 and SRPK2 activity underlining the importance of the assembly of transient intranuclear complexes in cellular regulation)
    corresponding disease(s)
    Variant & Polymorphism
    Candidate gene
    Therapy target