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SMPD4
HPA
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  • SMPD4
PROTEIN SUMMARY 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.

SMPD4
Synonyms FLJ20297, FLJ20756, KIAA1418, NET13, nSMase-3, NSMASE3
Gene descriptioni

Full gene name according to HGNC.

Sphingomyelin phosphodiesterase 4
Protein classi

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

Disease related genes
Enzymes
Human disease related genes
Metabolic proteins
Potential drug targets
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 2
Cytoband q21.1
Chromosome location (bp) 130151392 - 130182750
Number of transcriptsi

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

12
Ensembl ENSG00000136699 (version 109)
Entrez gene 55627
HGNC HGNC:32949
UniProt Q9NXE4 (UniProt - Evidence at protein level)
neXtProt NX_Q9NXE4
GeneCards SMPD4
Antibodypedia SMPD4 antibodies


PROTEIN FUNCTION
Protein function (UniProt)i

Useful information about the protein provided by UniProt.

Catalyzes the hydrolysis of membrane sphingomyelin to form phosphorylcholine and ceramide 1, 2. It has a relevant role in the homeostasis of membrane sphingolipids, thereby influencing membrane integrity, and endoplasmic reticulum organization and function 3. May sensitize cells to DNA damage-induced apoptosis 4. In skeletal muscle, mediates TNF-stimulated oxidant production (By similarity).... show less
Molecular function (UniProt)i

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

Hydrolase
Biological process (UniProt)i

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

Lipid 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

The protein encoded by this gene is a sphingomyelinase that catalyzes the hydrolysis of membrane sphingomyelin to form phosphorylcholine and ceramide. This gene is activated by DNA damage, cellular stress, and tumor necrosis factor, but it is downregulated by wild-type p53. The encoded protein localizes to the endoplasmic reticulum and Golgi network. [provided by RefSeq, Mar 2017]... 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 Splice variant identifier links to the Ensembl website protein summary for the selected splice variant. The data in the Swissprot and TrEMBL columns links to corresponding pages in the UniProt database.

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 length of the protein (amino acid residues according to Ensembl), molecular mass (kDalton), predicted signal peptide and number of predicted transmembrane region(s) according to in-house majority decision methods based on sets of predictors are also reported.
Splice variant SwissProt TrEMBL Protein class Gene ontology Length & mass Signal peptide
(predicted)
Transmembrane regions
(predicted)
SMPD4-201
ENSP00000259217
ENST00000351288
Q9NXE4
[Direct mapping] Sphingomyelin phosphodiesterase 4
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
   1TM proteins predicted by MDM
Disease related genes
Potential drug targets
Human disease related genes
   Congenital malformations
   Congenital malformations of the nervous system
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Kim et al 2014)
Protein evidence (Ezkurdia et al 2014)
   DeepTMHMM predicted membrane proteins
Show all
GO:0000139 [Golgi membrane]
GO:0004767 [sphingomyelin phosphodiesterase activity]
GO:0005634 [nucleus]
GO:0005635 [nuclear envelope]
GO:0005640 [nuclear outer membrane]
GO:0005783 [endoplasmic reticulum]
GO:0005789 [endoplasmic reticulum membrane]
GO:0005794 [Golgi apparatus]
GO:0005802 [trans-Golgi network]
GO:0005886 [plasma membrane]
GO:0006629 [lipid metabolic process]
GO:0006685 [sphingomyelin catabolic process]
GO:0007029 [endoplasmic reticulum organization]
GO:0016020 [membrane]
GO:0016787 [hydrolase activity]
GO:0042383 [sarcolemma]
GO:0046475 [glycerophospholipid catabolic process]
GO:0046513 [ceramide biosynthetic process]
GO:0046872 [metal ion binding]
GO:0050290 [sphingomyelin phosphodiesterase D activity]
GO:0071356 [cellular response to tumor necrosis factor]
Show all
837 aa
94.6 kDa
No 1
SMPD4-202
ENSP00000386531
ENST00000409031
Q9NXE4
[Direct mapping] Sphingomyelin phosphodiesterase 4
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
   1TM proteins predicted by MDM
Disease related genes
Potential drug targets
Human disease related genes
   Congenital malformations
   Congenital malformations of the nervous system
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Ezkurdia et al 2014)
   DeepTMHMM predicted membrane proteins
Show all
GO:0000139 [Golgi membrane]
GO:0004767 [sphingomyelin phosphodiesterase activity]
GO:0005634 [nucleus]
GO:0005635 [nuclear envelope]
GO:0005640 [nuclear outer membrane]
GO:0005783 [endoplasmic reticulum]
GO:0005789 [endoplasmic reticulum membrane]
GO:0005794 [Golgi apparatus]
GO:0005802 [trans-Golgi network]
GO:0005886 [plasma membrane]
GO:0006629 [lipid metabolic process]
GO:0006685 [sphingomyelin catabolic process]
GO:0007029 [endoplasmic reticulum organization]
GO:0016020 [membrane]
GO:0016787 [hydrolase activity]
GO:0042383 [sarcolemma]
GO:0046475 [glycerophospholipid catabolic process]
GO:0046513 [ceramide biosynthetic process]
GO:0046872 [metal ion binding]
GO:0050290 [sphingomyelin phosphodiesterase D activity]
GO:0071356 [cellular response to tumor necrosis factor]
Show all
866 aa
97.8 kDa
No 1
SMPD4-204
ENSP00000406325
ENST00000430682
H7C2J2
[Direct mapping] Sphingomyelin phosphodiesterase 4
Show all
Metabolic proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Human disease related genes
   Congenital malformations
   Congenital malformations of the nervous system
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0050290 [sphingomyelin phosphodiesterase D activity]
Show all
274 aa
31.1 kDa
No 0
SMPD4-205
ENSP00000405187
ENST00000431183
Q9NXE4
[Direct mapping] Sphingomyelin phosphodiesterase 4
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
   1TM proteins predicted by MDM
Disease related genes
Potential drug targets
Human disease related genes
   Congenital malformations
   Congenital malformations of the nervous system
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Kim et al 2014)
Protein evidence (Ezkurdia et al 2014)
   DeepTMHMM predicted membrane proteins
Show all
GO:0000139 [Golgi membrane]
GO:0004767 [sphingomyelin phosphodiesterase activity]
GO:0005634 [nucleus]
GO:0005635 [nuclear envelope]
GO:0005640 [nuclear outer membrane]
GO:0005783 [endoplasmic reticulum]
GO:0005789 [endoplasmic reticulum membrane]
GO:0005794 [Golgi apparatus]
GO:0005802 [trans-Golgi network]
GO:0005886 [plasma membrane]
GO:0006629 [lipid metabolic process]
GO:0006685 [sphingomyelin catabolic process]
GO:0007029 [endoplasmic reticulum organization]
GO:0016020 [membrane]
GO:0016787 [hydrolase activity]
GO:0042383 [sarcolemma]
GO:0046475 [glycerophospholipid catabolic process]
GO:0046513 [ceramide biosynthetic process]
GO:0046872 [metal ion binding]
GO:0050290 [sphingomyelin phosphodiesterase D activity]
GO:0071356 [cellular response to tumor necrosis factor]
Show all
764 aa
86.2 kDa
No 1
SMPD4-209
ENSP00000401648
ENST00000439886
H7C1Q6
[Direct mapping] Sphingomyelin phosphodiesterase 4
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
   1TM proteins predicted by MDM
Human disease related genes
   Congenital malformations
   Congenital malformations of the nervous system
Protein evidence (Ezkurdia et al 2014)
   DeepTMHMM predicted membrane proteins
Show all
GO:0016020 [membrane]
GO:0050290 [sphingomyelin phosphodiesterase D activity]
Show all
741 aa
83.1 kDa
No 1
SMPD4-210
ENSP00000406458
ENST00000441135
C9J647
[Direct mapping] Sphingomyelin phosphodiesterase 4
Show all
Metabolic proteins
   SPOCTOPUS predicted membrane proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Human disease related genes
   Congenital malformations
   Congenital malformations of the nervous system
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0050290 [sphingomyelin phosphodiesterase D activity]
Show all
135 aa
15.3 kDa
No 0
SMPD4-211
ENSP00000403915
ENST00000449159
H7C235
[Direct mapping] Sphingomyelin phosphodiesterase 4
Show all
Metabolic proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Human disease related genes
   Congenital malformations
   Congenital malformations of the nervous system
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0050290 [sphingomyelin phosphodiesterase D activity]
Show all
211 aa
23.8 kDa
No 0
SMPD4-212
ENSP00000405363
ENST00000451542
H7C2E2
[Direct mapping] Sphingomyelin phosphodiesterase 4
Show all
Metabolic proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Human disease related genes
   Congenital malformations
   Congenital malformations of the nervous system
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0050290 [sphingomyelin phosphodiesterase D activity]
Show all
265 aa
30.3 kDa
No 0
SMPD4-215
ENSP00000397078
ENST00000457039
H7C0W5
[Direct mapping] Sphingomyelin phosphodiesterase 4
Show all
Metabolic proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Human disease related genes
   Congenital malformations
   Congenital malformations of the nervous system
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0050290 [sphingomyelin phosphodiesterase D activity]
Show all
313 aa
35.6 kDa
No 0
SMPD4-222
ENSP00000506463
ENST00000680298
A0A7P0TB24
[Direct mapping] Sphingomyelin phosphodiesterase 4
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
   1TM proteins predicted by MDM
Human disease related genes
   Congenital malformations
   Congenital malformations of the nervous system
Protein evidence (Ezkurdia et al 2014)
   DeepTMHMM predicted membrane proteins
Show all
GO:0001701 [in utero embryonic development]
GO:0004767 [sphingomyelin phosphodiesterase activity]
GO:0005635 [nuclear envelope]
GO:0005783 [endoplasmic reticulum]
GO:0006685 [sphingomyelin catabolic process]
GO:0016020 [membrane]
GO:0042383 [sarcolemma]
GO:0046513 [ceramide biosynthetic process]
GO:0050290 [sphingomyelin phosphodiesterase D activity]
GO:0071356 [cellular response to tumor necrosis factor]
Show all
827 aa
93.4 kDa
No 1
SMPD4-223
ENSP00000506367
ENST00000680401
A0A7P0TB44
[Direct mapping] Sphingomyelin phosphodiesterase 4
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
   1TM proteins predicted by MDM
Human disease related genes
   Congenital malformations
   Congenital malformations of the nervous system
Protein evidence (Ezkurdia et al 2014)
   DeepTMHMM predicted membrane proteins
Show all
GO:0016020 [membrane]
GO:0050290 [sphingomyelin phosphodiesterase D activity]
Show all
428 aa
48.3 kDa
No 1
SMPD4-224
ENSP00000505716
ENST00000680679
A0A7P0T9J6
[Direct mapping] Sphingomyelin phosphodiesterase 4
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
   1TM proteins predicted by MDM
Human disease related genes
   Congenital malformations
   Congenital malformations of the nervous system
Protein evidence (Ezkurdia et al 2014)
   DeepTMHMM predicted membrane proteins
Show all
GO:0016020 [membrane]
GO:0050290 [sphingomyelin phosphodiesterase D activity]
Show all
844 aa
94.9 kDa
No 1

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