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 QHPWLNPLocalizationUniProt · 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.
- Intellectual developmental disorder, X-linked 114 (XLID114) MIM:301134
Disease | GeneticClinVar
5 pathogenic / likely-pathogenic of 172 ClinVar records.
Conditions with pathogenic or likely-pathogenic variants.
- Intellectual developmental disorder, X-linked 114
- Congenital myopathy
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
- cell differentiation
- intracellular signal transduction
- muscle tissue development
- regulation of mRNA processing
- skeletal muscle tissue development
- spliceosomal complex assembly
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.
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