Gene Information
Gene NameSPX
OrganismHomo sapiens (Human)
Gene Length116
Protein NamesSpexin (NPQ) (Neuropeptide Q) (Spexin hormone) [Cleaved into: Spexin-1; Spexin-2 (NPQ 53-70)]
Target NameNA
Target TypeNA
Gene Age1488 ( ENSG00000134548 )
Evolutionary StageVertebrata
AlphaFoldDBQ9BT56
Gene CardSPX
Uniprot IDQ9BT56
PfamPF15171
In ASDno
Allosteric Predictionno (-0.800990333)
Ortholog in AnimalsAlpaca_ SPX ( ortholog_one2one )
GuineaPig_ SPX ( ortholog_one2one )
Macaque_ SPX ( ortholog_one2one )
Mouse_ Spx ( ortholog_one2one )
Pig_ SPX ( ortholog_one2one )
Rat_ Spx ( ortholog_one2one )
Rabbit_ SPX ( ortholog_one2one )
OhnologsNA
ParalogsNA
Tissueadipose.tissue
Tissue SpecificityExpressed in the type I glomic cells within the carotid body (at protein level). Expressed predominantly in pancreas, testis, kidney, brain and placenta. Expressed in submucosal layer of esophagus and stomach fundus. {ECO:0000269|PubMed:17284679, ECO:0000269|PubMed:19132080, ECO:0000269|PubMed:19193193, ECO:0000269|PubMed:23080164}.
Pharmacological Animal ModelsNA
Gene Ontology
(biological process)
Gene Ontology
(cellular component)
Gene Ontology
(molecular function)
PDB NA 
DBSNP NA 
Subcellular location [CC]Secreted. Secreted, extracellular space. Cytoplasmic vesicle, secretory vesicle. Note=Secreted via the classical ER/Golgi-dependent pathway into the extracellular medium largely as a full-length protein without the signal peptide, and not as a hydrolyzed and amidated peptide (PubMed:19193193 and PubMed:17284679). Localized extracellularly surrounding the villous trophoblastic cells. Detected in the serum.
Mouse PG classificationNA
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