Gene Information
Gene NameSPEG
OrganismHomo sapiens (Human)
Gene Length3267
Protein NamesStriated muscle preferentially expressed protein kinase (EC 2.7.11.1) (Aortic preferentially expressed protein 1) (APEG-1)
Target NameNA
Target TypeNA
Gene Age244 ( ENSG00000072195 )
Evolutionary StageEumetazoa
AlphaFoldDBNA
Gene CardSPEG
Uniprot IDQ15772
PfamPF07679; PF00069
In ASDno
Allosteric Predictionyes (0.000898023)
Ortholog in AnimalsAlpaca_ SPEG ( ortholog_one2one )
Dog_ SPEG ( ortholog_one2one )
Macaque_ SPEG ( ortholog_one2one )
Mouse_ Speg ( ortholog_one2one )
Rat_ Speg ( ortholog_one2one )
OhnologsNA
ParalogsOBSCN, PALLD, MYPN, HMCN1, IGFN1, CCDC141, ALPK3, SPEGNB, MYOT
Tissueheart, sigmoid.colon
Tissue SpecificityIsoform 1 is preferentially expressed in striated muscle. Non-kinase form such as isoform 3 is predominantly expressed in the aorta. Isoform 3 appears to be expressed only in highly differentiated ASMC in normal vessel walls and down-regulated in dedifferentiated ASMC in vivo. In response to vascular injuries ASMC dedifferentiate and change from a quiescent and contractile phenotype to a proliferative and synthetic phenotype. This proliferation of vascular smooth muscle cells is one of the most prominent features of atherosclerosis. {ECO:0000269|PubMed:15185077, ECO:0000269|PubMed:8663449}.
Pharmacological Animal ModelsNULL(Chimpanzee);NULL(Mouse);NULL(Rat);0.025(Rabbit)
Gene Ontology
(biological process)
Gene Ontology
(cellular component)
Gene Ontology
(molecular function)
PDB 1U2H  (X-ray  0.96A 
DBSNP rs55821435  rs34398769  rs34861443  rs56334571  rs55670811  rs757589345  rs55916864  rs34994343  rs55646900  rs762000831  rs10755037  rs13026308  rs566841339  rs587777676  rs12464085 
Subcellular location [CC][Isoform 3]: Nucleus.
Mouse PG classificationLPG
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