Seroatlas · Human Serome Atlas

SRPK3

SRSF protein kinase 3

Also known as: MSSK1, SRPK3_HUMAN, STK23

Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene

Protein identityUniProt · HPA

UniProt accession
Q9UPE1
Gene
SRPK3
Ensembl
ENSG00000184343
Chromosome
X
Canonical length
567 aa
Protein class
Enzymes, Metabolic proteins, Predicted intracellular proteins

OverviewNCBI Gene

This gene encodes a protein kinase similar to a protein kinase which is specific for the SR (serine/arginine-rich domain) family of splicing factors. A highly similar protein has been shown to play a role in muscle development in mice. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2009]

Canonical amino-acid sequenceUniProt

567 residues, UniProt reviewed canonical sequence.

>Q9UPE1|SRPK3
     1  MSASTGGGGD SGGSGGSSSS SQASCGPESS GSELALATPV PQMLQGLLGS DDEEQEDPKD
    61  YCKGGYHPVK IGDVFNGRYH VVRKLGWGHF STVWLCWDIQ RKRFVALKVV KSAGHYTETA
   121  VDEIKLLKCV RDSDPSDPKR ETIVQLIDDF RISGVNGVHV CMVLEVLGHQ LLKWIIKSNY
   181  QGLPVPCVKS IVRQVLHGLD YLHTKCKIIH TDIKPENILL CVGDAYIRRL AAEATEWQQA
   241  GAPPPSRSIV STAPQEVLQT GKLSKNKRKK MRRKRKQQKR LLEERLRDLQ RLEAMEAATQ
   301  AEDSGLRLDG GSGSTSSSGC HPGGARAGPS PASSSPAPGG GRSLSAGSQT SGFSGSLFSP
   361  ASCSILSGSS NQRETGGLLS PSTPFGASNL LVNPLEPQNA DKIKIKIADL GNACWVHKHF
   421  TEDIQTRQYR AVEVLIGAEY GPPADIWSTA CMAFELATGD YLFEPHSGED YSRDEDHIAH
   481  IVELLGDIPP AFALSGRYSR EFFNRRGELR HIHNLKHWGL YEVLMEKYEW PLEQATQFSA
   541  FLLPMMEYIP EKRASAADCL QHPWLNP

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against SRPK3 can act on the native protein depends on physical access: surface and secreted proteins are reachable by circulating antibodies, intracellular proteins usually are not.

Antibody reachability
Intracellular
Secreted
No
Transmembrane segments
0
Mean surface accessibility (rSASA)
0.36
Highest tissue expression
198 nTPM

Expression across tissuesHPA

Tissue

  • skeletal muscle: 198 nTPM
  • tongue: 72 nTPM
  • heart muscle: 45 nTPM
  • cerebellum: 23 nTPM
  • pituitary gland: 18 nTPM
  • colon: 17 nTPM

Single-cell type

  • thymic myoid cells: 95 nCPM
  • myonuclei: 53 nCPM
  • corticotrophs: 24 nCPM
  • breast lactating cells: 17 nCPM
  • cardiomyocytes: 17 nCPM
  • salivary ionocytes: 12 nCPM

Immune cell

  • plasmacytoid DC: 0.4 nTPM
  • basophil: 0.1 nTPM
  • MAIT T-cell: 0.1 nTPM
  • neutrophil: 0.1 nTPM
  • classical monocyte: 0 nTPM
  • eosinophil: 0 nTPM

Brain region

  • white matter: 37 nTPM
  • cerebellum: 31 nTPM
  • cerebral cortex: 24 nTPM
  • thalamus: 23 nTPM
  • basal ganglia: 22 nTPM
  • medulla oblongata: 20 nTPM

DiseaseUniProt · ClinVar · IEDB · PubMed

Four sources answering four different questions about SRPK3.

Disease | AllUniProt

Conditions SRPK3 is implicated in, by any mechanism.

Disease | GeneticClinVar

5 pathogenic / likely-pathogenic of 172 ClinVar records.

Conditions with pathogenic or likely-pathogenic variants.

Genetic constraint and essentialitygnomAD · DepMap

Does the body need this protein intact? Low LOEUF or a strong DepMap dependency means loss or blockade of the protein is likely to be felt.

gnomAD LOEUF (loss-of-function intolerance)
0.5
gnomAD pLI
0.29
gnomAD missense Z
0.03
DepMap mean gene effect
0.03
DepMap dependency class
none

Cancer expressionTCGA

Across TCGA tumor cohorts, this protein is over-expressed in roughly 4% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).

OntologyGO

Biological processes

Molecular functions

Cellular components

Protein domainsUniProt · Pfam · InterPro

KeywordsUniProt

InteractionsUniProt · HPA

Protein binding partners of SRPK3 in the human serome: UniProt-annotated complex subunits plus reported interactors. Each links to its own Seroatlas record.

Antibody and autoantibody relevanceSeroatlas analysis

Seroatlas reads SRPK3 as an antibody target. Whether an autoantibody or antibody against SRPK3 could matter depends on whether native SRPK3 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

SRPK3 is annotated as predominantly intracellular. Intracellular proteins are common autoantibody markers, becoming visible to the immune system after cell injury or altered processing, but are usually markers of disease rather than direct drivers.

Annotation status

The present source text does not explicitly label SRPK3 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/SRPK3. Study-independent annotations aggregated from UniProt, Human Protein Atlas, PubMed, IEDB, Pfam, InterPro, Gene Ontology, AlphaFold, gnomAD, DepMap, ClinVar, TCGA. Catalog release seroatlas-reviewed-human-uniprot-20260313.

Seroatlas is the reference for exploring autoantibody and antibody serology at the human-protein level: the autoreactome and human serome, multiplex serology (HuProt, HuScan, VirScan, PhIP-Seq).

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