Gene Information
Gene NameSPG21
OrganismHomo sapiens (Human)
Gene Length308
Protein NamesMaspardin (Acid cluster protein 33) (Spastic paraplegia 21 autosomal recessive Mast syndrome protein) (Spastic paraplegia 21 protein)
Target NameNA
Target TypeNA
Gene Age454 ( ENSG00000090487 )
Evolutionary StageEukaryota
AlphaFoldDBQ9NZD8
Gene CardSPG21
Uniprot IDQ9NZD8
PfamPF00561
In ASDno
Allosteric Predictionno (-0.650230057)
Ortholog in AnimalsAlpaca_ SPG21 ( ortholog_one2one )
Dog_ SPG21 ( ortholog_one2one )
GuineaPig_ SPG21 ( ortholog_one2one )
Macaque_ SPG21 ( ortholog_one2one )
Mouse_ Spg21 ( ortholog_one2one )
Pig_ SPG21 ( ortholog_one2one )
Rat_ Spg21 ( ortholog_one2one )
OhnologsNA
ParalogsNA
TissueNA
Tissue SpecificityExpressed in all tissues tested, including heart, brain, placenta, lung, liver, skeletal muscle, kidney and pancreas. Expressed in J.CaM1.6, HuT 78 and HeLa cell lines (at protein level). {ECO:0000269|PubMed:11113139}.
Pharmacological Animal ModelsNA
Gene Ontology
(biological process)
Gene Ontology
(cellular component)
Gene Ontology
(molecular function)
PDB NA 
DBSNP NA 
Subcellular location [CC]Cytoplasm, cytosol {ECO:0000269|PubMed:11113139}. Membrane {ECO:0000269|PubMed:11113139};
Peripheral membrane protein {ECO:0000269|PubMed:11113139}. Endosome membrane {ECO:0000269|PubMed:11113139};
Peripheral membrane protein {ECO:0000269|PubMed:11113139}. Golgi apparatus, trans-Golgi network membrane {ECO:0000269|PubMed:11113139};
Peripheral membrane protein {ECO:0000269|PubMed:11113139}. Note=Partially localized in the cytosol but also accumulated on an intracellular vesicular compartment. Colocalizes with CD4 on endosomal/trans-Golgi network.
Mouse PG classificationNA
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