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SMPD3
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  • SMPD3
PROTEIN SUMMARY SECTION OVERVIEW GENE INFORMATION RNA DATA ANTIBODY DATA
GENERAL INFORMATIONi

General description of the gene and the encoded protein(s) using information from HGNC and Ensembl, as well as predictions made by the Human Protein Atlas project.

Gene namei

Official gene symbol, which is typically a short form of the gene name, according to HGNC.

SMPD3
Synonyms NSMASE2
Gene descriptioni

Full gene name according to HGNC.

Sphingomyelin phosphodiesterase 3
Protein classi

Assigned HPA protein class(es) for the encoded protein(s).

Enzymes
Metabolic proteins
Predicted locationi

All transcripts of all genes have been analyzed regarding the location(s) of corresponding protein based on prediction methods for signal peptides and transmembrane regions.

  • Genes with at least one transcript predicted to encode a secreted protein, according to prediction methods or to UniProt location data, have been further annotated and classified with the aim to determine if the corresponding protein(s) are secreted or actually retained in intracellular locations or membrane-attached.

  • Remaining genes, with no transcript predicted to encode a secreted protein, will be assigned the prediction-based location(s).

The annotated location overrules the predicted location, so that a gene encoding a predicted secreted protein that has been annotated as intracellular will have intracellular as the final location.

Membrane, Intracellular
Protein evidence Evidence at protein level (all genes)
GENE INFORMATIONi

Gene information from Ensembl and Entrez, as well as links to available gene identifiers are displayed here. Information was retrieved from Ensembl if not indicated otherwise.

Chromosome 16
Cytoband q22.1
Chromosome location (bp) 68358327 - 68448508
Number of transcriptsi

Number of protein-coding transcripts from the gene as defined by Ensembl.

5
Ensembl ENSG00000103056 (version 109)
Entrez gene 55512
HGNC HGNC:14240
UniProt Q9NY59 (UniProt - Evidence at protein level)
neXtProt NX_Q9NY59
GeneCards SMPD3
Antibodypedia SMPD3 antibodies


PROTEIN FUNCTION
Protein function (UniProt)i

Useful information about the protein provided by UniProt.

Catalyzes the hydrolysis of sphingomyelin to form ceramide and phosphocholine. Ceramide mediates numerous cellular functions, such as apoptosis and growth arrest, and is capable of regulating these 2 cellular events independently. Also hydrolyzes sphingosylphosphocholine. Regulates the cell cycle by acting as a growth suppressor in confluent cells. Probably acts as a regulator of postnatal development and participates in bone and dentin mineralization 1, 2, 3. Binds to anionic phospholipids (APLs) such as phosphatidylserine (PS) and phosphatidic acid (PA) that modulate enzymatic activity and subcellular location. May be involved in IL-1-beta-induced JNK activation in hepatocytes (By similarity). May act as a mediator in transcriptional regulation of NOS2/iNOS via the NF-kappa-B activation under inflammatory conditions (By similarity).... show less
Molecular function (UniProt)i

Keywords assigned by UniProt to proteins due to their particular molecular function.

Developmental protein, Hydrolase
Biological process (UniProt)i

Keywords assigned by UniProt to proteins because they are involved in a particular biological process.

Cell cycle, Lipid metabolism, Sphingolipid metabolism
Ligand (UniProt)i

Keywords assigned by UniProt to proteins because they bind, are associated with, or whose activity is dependent of some molecule.

Magnesium, Metal-binding
Gene summary (Entrez)i

Useful information about the gene from Entrez

Predicted to enable phosphatidic acid binding activity; phosphatidylserine binding activity; and sphingomyelin phosphodiesterase activity. Predicted to be involved in positive regulation of exosomal secretion and sphingomyelin metabolic process. Predicted to act upstream of or within several processes, including animal organ development; enzyme linked receptor protein signaling pathway; and sphingolipid metabolic process. Predicted to be located in Golgi apparatus and plasma membrane. Predicted to be active in cytoplasm. Biomarker of pulmonary emphysema. [provided by Alliance of Genome Resources, Apr 2022]... show less
PROTEIN INFORMATIONi

The protein information section displays alternative protein-coding transcripts (splice variants) encoded by this gene according to the Ensembl database.

The ENSP identifier links to the Ensembl website protein summary, while the ENST identifier links to the Ensembl website transcript summary for the selected splice variant. The data in the UniProt column can be expanded to show links to all matching UniProt identifiers for this protein.

The protein classes assigned to this protein are shown if expanding the data in the protein class column. Parent protein classes are in bold font and subclasses are listed under the parent class.

The Gene Ontology terms assigned to this protein are listed if expanding the Gene ontology column. The length of the protein (amino acid residues according to Ensembl), molecular mass (kDalton), predicted signal peptide (according to a majority of the signal peptide predictors SPOCTOPUS, SignalP 4.0, and Phobius) and the number of predicted transmembrane region(s) (according to MDM) are also reported.
Splice variant SwissProt TrEMBL Protein class Gene ontology Length & mass Signal peptide
(predicted)
Transmembrane regions
(predicted)
SMPD3-201
ENSP00000219334
ENST00000219334
Q9NY59
[Direct mapping] Sphingomyelin phosphodiesterase 3
Show all
Enzymes
   ENZYME proteins
   Hydrolases
Metabolic proteins
Predicted membrane proteins
   Prediction method-based
   Membrane proteins predicted by MDM
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   Phobius predicted membrane proteins
   SCAMPI predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   THUMBUP predicted membrane proteins
   TMHMM predicted membrane proteins
   # TM segments-based
   2TM proteins predicted by MDM
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Kim et al 2014)
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0000137 [Golgi cis cisterna]
GO:0000139 [Golgi membrane]
GO:0001501 [skeletal system development]
GO:0001503 [ossification]
GO:0001786 [phosphatidylserine binding]
GO:0001932 [regulation of protein phosphorylation]
GO:0001958 [endochondral ossification]
GO:0002063 [chondrocyte development]
GO:0002244 [hematopoietic progenitor cell differentiation]
GO:0002685 [regulation of leukocyte migration]
GO:0003433 [chondrocyte development involved in endochondral bone morphogenesis]
GO:0003824 [catalytic activity]
GO:0004620 [phospholipase activity]
GO:0004767 [sphingomyelin phosphodiesterase activity]
GO:0005515 [protein binding]
GO:0005576 [extracellular region]
GO:0005737 [cytoplasm]
GO:0005794 [Golgi apparatus]
GO:0005886 [plasma membrane]
GO:0006629 [lipid metabolic process]
GO:0006665 [sphingolipid metabolic process]
GO:0006672 [ceramide metabolic process]
GO:0006684 [sphingomyelin metabolic process]
GO:0006685 [sphingomyelin catabolic process]
GO:0007049 [cell cycle]
GO:0007165 [signal transduction]
GO:0008081 [phosphoric diester hydrolase activity]
GO:0015774 [polysaccharide transport]
GO:0016020 [membrane]
GO:0016787 [hydrolase activity]
GO:0030072 [peptide hormone secretion]
GO:0030282 [bone mineralization]
GO:0030324 [lung development]
GO:0030509 [BMP signaling pathway]
GO:0032963 [collagen metabolic process]
GO:0034614 [cellular response to reactive oxygen species]
GO:0035264 [multicellular organism growth]
GO:0042802 [identical protein binding]
GO:0043491 [protein kinase B signaling]
GO:0045840 [positive regulation of mitotic nuclear division]
GO:0046872 [metal ion binding]
GO:0048008 [platelet-derived growth factor receptor signaling pathway]
GO:0048286 [lung alveolus development]
GO:0048661 [positive regulation of smooth muscle cell proliferation]
GO:0051216 [cartilage development]
GO:0060348 [bone development]
GO:0060541 [respiratory system development]
GO:0061035 [regulation of cartilage development]
GO:0061751 [neutral sphingomyelin phosphodiesterase activity]
GO:0070300 [phosphatidic acid binding]
GO:0070301 [cellular response to hydrogen peroxide]
GO:0070314 [G1 to G0 transition]
GO:0071286 [cellular response to magnesium ion]
GO:0071356 [cellular response to tumor necrosis factor]
GO:0071461 [cellular response to redox state]
GO:0071897 [DNA biosynthetic process]
GO:0085029 [extracellular matrix assembly]
GO:0090520 [sphingolipid mediated signaling pathway]
GO:0097187 [dentinogenesis]
GO:0098868 [bone growth]
GO:0140014 [mitotic nuclear division]
GO:0140052 [cellular response to oxidised low-density lipoprotein particle stimulus]
GO:1900125 [regulation of hyaluronan biosynthetic process]
GO:1900126 [negative regulation of hyaluronan biosynthetic process]
GO:1901653 [cellular response to peptide]
GO:1903543 [positive regulation of exosomal secretion]
Show all
655 aa
71.1 kDa
No 2
SMPD3-202
ENSP00000457236
ENST00000561749
H3BTM0
[Direct mapping] Sphingomyelin phosphodiesterase 3
Show all
Metabolic proteins
Predicted membrane proteins
   Prediction method-based
   Membrane proteins predicted by MDM
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   Phobius predicted membrane proteins
   SCAMPI predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   THUMBUP predicted membrane proteins
   TMHMM predicted membrane proteins
   # TM segments-based
   2TM proteins predicted by MDM
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0016020 [membrane]
Show all
93 aa
10.6 kDa
No 2
SMPD3-203
ENSP00000455955
ENST00000563226
Q9NY59
[Direct mapping] Sphingomyelin phosphodiesterase 3
Show all
Enzymes
   ENZYME proteins
   Hydrolases
Metabolic proteins
Predicted membrane proteins
   Prediction method-based
   Membrane proteins predicted by MDM
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   Phobius predicted membrane proteins
   SCAMPI predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   THUMBUP predicted membrane proteins
   TMHMM predicted membrane proteins
   # TM segments-based
   2TM proteins predicted by MDM
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0000139 [Golgi membrane]
GO:0001786 [phosphatidylserine binding]
GO:0003824 [catalytic activity]
GO:0004620 [phospholipase activity]
GO:0004767 [sphingomyelin phosphodiesterase activity]
GO:0005515 [protein binding]
GO:0005576 [extracellular region]
GO:0005737 [cytoplasm]
GO:0005794 [Golgi apparatus]
GO:0005886 [plasma membrane]
GO:0006629 [lipid metabolic process]
GO:0006665 [sphingolipid metabolic process]
GO:0006684 [sphingomyelin metabolic process]
GO:0006685 [sphingomyelin catabolic process]
GO:0007049 [cell cycle]
GO:0008081 [phosphoric diester hydrolase activity]
GO:0016020 [membrane]
GO:0016787 [hydrolase activity]
GO:0046872 [metal ion binding]
GO:0070300 [phosphatidic acid binding]
GO:1903543 [positive regulation of exosomal secretion]
Show all
647 aa
70.2 kDa
No 2
SMPD3-211
ENSP00000457422
ENST00000568373
H3BS51
[Direct mapping] Sphingomyelin phosphodiesterase
Show all
Metabolic proteins
Predicted membrane proteins
   Prediction method-based
   Membrane proteins predicted by MDM
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   Phobius predicted membrane proteins
   SCAMPI predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   THUMBUP predicted membrane proteins
   TMHMM predicted membrane proteins
   # TM segments-based
   2TM proteins predicted by MDM
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0004767 [sphingomyelin phosphodiesterase activity]
GO:0005576 [extracellular region]
GO:0006665 [sphingolipid metabolic process]
GO:0008081 [phosphoric diester hydrolase activity]
GO:0016020 [membrane]
Show all
638 aa
69.1 kDa
No 2
SMPD3-212
ENSP00000459317
ENST00000574662
I3L228
[Direct mapping] Sphingomyelin phosphodiesterase 3
Show all
Metabolic proteins
   SPOCTOPUS predicted secreted proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Protein evidence (Ezkurdia et al 2014)
Show all
207 aa
22.6 kDa
No 0

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