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NPC2
HPA
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  • NPC2
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.

NPC2
Synonyms EDDM1, HE1, NP-C2
Gene descriptioni

Full gene name according to HGNC.

NPC intracellular cholesterol transporter 2
Protein classi

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

Disease related genes
Human disease related genes
Plasma proteins
Potential drug targets
Transporters
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.

Secreted, 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 14
Cytoband q24.3
Chromosome location (bp) 74476192 - 74494177
Number of transcriptsi

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

8
Ensembl ENSG00000119655 (version 109)
Entrez gene 10577
HGNC HGNC:14537
UniProt P61916 (UniProt - Evidence at protein level)
neXtProt NX_P61916
GeneCards NPC2
Antibodypedia NPC2 antibodies


PROTEIN FUNCTION
Protein function (UniProt)i

Useful information about the protein provided by UniProt.

Intracellular cholesterol transporter which acts in concert with NPC1 and plays an important role in the egress of cholesterol from the lysosomal compartment 1, 2, 3, 4, 5. Unesterified cholesterol that has been released from LDLs in the lumen of the late endosomes/lysosomes is transferred by NPC2 to the cholesterol-binding pocket in the N-terminal domain of NPC1 6, 7, 8. May bind and mobilize cholesterol that is associated with membranes 9. NPC2 binds cholesterol with a 1:1 stoichiometry 10. Can bind a variety of sterols, including lathosterol, desmosterol and the plant sterols stigmasterol and beta-sitosterol 11. The secreted form of NCP2 regulates biliary cholesterol secretion via stimulation of ABCG5/ABCG8-mediated cholesterol transport (By similarity).... show less
Biological process (UniProt)i

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

Cholesterol metabolism, Lipid metabolism, Lipid transport, Steroid metabolism, Sterol metabolism, Transport
Gene summary (Entrez)i

Useful information about the gene from Entrez

This gene encodes a protein containing a lipid recognition domain. The encoded protein may function in regulating the transport of cholesterol through the late endosomal/lysosomal system. Mutations in this gene have been associated with Niemann-Pick disease, type C2 and frontal lobe atrophy. [provided by RefSeq, Jul 2008]... 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)
NPC2-201
ENSP00000238633
ENST00000238633
J3KMY5
[Direct mapping] NPC intracellular cholesterol transporter 2
Show all
   MEMSAT3 predicted membrane proteins
Predicted secreted proteins
   Secreted proteins predicted by MDSEC
   SignalP predicted secreted proteins
   Phobius predicted secreted proteins
   SPOCTOPUS predicted secreted proteins
   DeepTMHMM predicted secreted proteins
   DeepSig predicted secreted proteins
Human disease related genes
   Congenital disorders of metabolism
   Lysosomal storage diseases
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0005576 [extracellular region]
GO:0015918 [sterol transport]
GO:0032367 [intracellular cholesterol transport]
GO:0032934 [sterol binding]
Show all
148 aa
16.2 kDa
Yes 0
NPC2-202
ENSP00000412103
ENST00000434013
E7EMS2
[Direct mapping] NPC intracellular cholesterol transporter 2
Show all
   MEMSAT3 predicted membrane proteins
   THUMBUP predicted membrane proteins
Predicted secreted proteins
   Secreted proteins predicted by MDSEC
   SignalP predicted secreted proteins
   Phobius predicted secreted proteins
   SPOCTOPUS predicted secreted proteins
   DeepTMHMM predicted secreted proteins
   DeepSig predicted secreted proteins
Human disease related genes
   Congenital disorders of metabolism
   Lysosomal storage diseases
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0005576 [extracellular region]
GO:0015918 [sterol transport]
GO:0032367 [intracellular cholesterol transport]
GO:0032934 [sterol binding]
Show all
201 aa
22.4 kDa
Yes 0
NPC2-203
ENSP00000442488
ENST00000541064
P61916
[Direct mapping] NPC intracellular cholesterol transporter 2
Show all
Transporters
   Electrochemical Potential-driven transporters
   MEMSAT3 predicted membrane proteins
Predicted secreted proteins
   Secreted proteins predicted by MDSEC
   SignalP predicted secreted proteins
   Phobius predicted secreted proteins
   SPOCTOPUS predicted secreted proteins
   DeepTMHMM predicted secreted proteins
   DeepSig predicted secreted proteins
Plasma proteins
Disease related genes
Potential drug targets
Human disease related genes
   Congenital disorders of metabolism
   Lysosomal storage diseases
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0005515 [protein binding]
GO:0005576 [extracellular region]
GO:0005615 [extracellular space]
GO:0005764 [lysosome]
GO:0005783 [endoplasmic reticulum]
GO:0006629 [lipid metabolic process]
GO:0006869 [lipid transport]
GO:0008202 [steroid metabolic process]
GO:0008203 [cholesterol metabolic process]
GO:0009615 [response to virus]
GO:0015485 [cholesterol binding]
GO:0015914 [phospholipid transport]
GO:0015918 [sterol transport]
GO:0019747 [regulation of isoprenoid metabolic process]
GO:0019899 [enzyme binding]
GO:0030301 [cholesterol transport]
GO:0032366 [intracellular sterol transport]
GO:0032367 [intracellular cholesterol transport]
GO:0032934 [sterol binding]
GO:0033344 [cholesterol efflux]
GO:0035578 [azurophil granule lumen]
GO:0042632 [cholesterol homeostasis]
GO:0043202 [lysosomal lumen]
GO:0046836 [glycolipid transport]
GO:0070062 [extracellular exosome]
GO:0120009 [intermembrane lipid transfer]
GO:0120020 [cholesterol transfer activity]
Show all
125 aa
13.4 kDa
Yes 0
NPC2-204
ENSP00000451180
ENST00000553490
G3V3D1
[Direct mapping] NPC intracellular cholesterol transporter 2
Show all
   MEMSAT3 predicted membrane proteins
Predicted secreted proteins
   Secreted proteins predicted by MDSEC
   SignalP predicted secreted proteins
   Phobius predicted secreted proteins
   SPOCTOPUS predicted secreted proteins
   DeepTMHMM predicted secreted proteins
   DeepSig predicted secreted proteins
Human disease related genes
   Congenital disorders of metabolism
   Lysosomal storage diseases
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0005576 [extracellular region]
GO:0015918 [sterol transport]
GO:0032367 [intracellular cholesterol transport]
GO:0032934 [sterol binding]
Show all
221 aa
23.7 kDa
Yes 0
NPC2-206
ENSP00000450887
ENST00000555592
G3V2V8
[Direct mapping] NPC intracellular cholesterol transporter 2
Show all
   MEMSAT3 predicted membrane proteins
Predicted secreted proteins
   Secreted proteins predicted by MDSEC
   SignalP predicted secreted proteins
   Phobius predicted secreted proteins
   SPOCTOPUS predicted secreted proteins
   DeepTMHMM predicted secreted proteins
   DeepSig predicted secreted proteins
Human disease related genes
   Congenital disorders of metabolism
   Lysosomal storage diseases
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0005576 [extracellular region]
GO:0015918 [sterol transport]
GO:0032367 [intracellular cholesterol transport]
GO:0032934 [sterol binding]
Show all
122 aa
13.1 kDa
Yes 0
NPC2-207
ENSP00000451112
ENST00000555619
P61916
[Direct mapping] NPC intracellular cholesterol transporter 2
Show all
A0A024R6C0
[Target identity:100%; Query identity:100%] NPC intracellular cholesterol transporter 2
Show all
Transporters
   Electrochemical Potential-driven transporters
   MEMSAT3 predicted membrane proteins
Predicted secreted proteins
   Secreted proteins predicted by MDSEC
   SignalP predicted secreted proteins
   Phobius predicted secreted proteins
   SPOCTOPUS predicted secreted proteins
   DeepTMHMM predicted secreted proteins
   DeepSig predicted secreted proteins
Plasma proteins
Disease related genes
Potential drug targets
Human disease related genes
   Congenital disorders of metabolism
   Lysosomal storage diseases
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Kim et al 2014)
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0005515 [protein binding]
GO:0005576 [extracellular region]
GO:0005615 [extracellular space]
GO:0005764 [lysosome]
GO:0005783 [endoplasmic reticulum]
GO:0006629 [lipid metabolic process]
GO:0006869 [lipid transport]
GO:0008202 [steroid metabolic process]
GO:0008203 [cholesterol metabolic process]
GO:0009615 [response to virus]
GO:0015485 [cholesterol binding]
GO:0015914 [phospholipid transport]
GO:0015918 [sterol transport]
GO:0019747 [regulation of isoprenoid metabolic process]
GO:0019899 [enzyme binding]
GO:0030301 [cholesterol transport]
GO:0032366 [intracellular sterol transport]
GO:0032367 [intracellular cholesterol transport]
GO:0032934 [sterol binding]
GO:0033344 [cholesterol efflux]
GO:0035578 [azurophil granule lumen]
GO:0042632 [cholesterol homeostasis]
GO:0043202 [lysosomal lumen]
GO:0046836 [glycolipid transport]
GO:0070062 [extracellular exosome]
GO:0120009 [intermembrane lipid transfer]
GO:0120020 [cholesterol transfer activity]
Show all
151 aa
16.6 kDa
Yes 0
NPC2-208
ENSP00000450502
ENST00000556009
H0YIZ1
[Direct mapping] NPC intracellular cholesterol transporter 2
Show all
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Human disease related genes
   Congenital disorders of metabolism
   Lysosomal storage diseases
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0005576 [extracellular region]
GO:0015918 [sterol transport]
GO:0032367 [intracellular cholesterol transport]
GO:0032934 [sterol binding]
Show all
173 aa
19.1 kDa
No 0
NPC2-209
ENSP00000451206
ENST00000557510
G3V3E8
[Direct mapping] NPC intracellular cholesterol transporter 2
Show all
   MEMSAT3 predicted membrane proteins
Predicted secreted proteins
   Secreted proteins predicted by MDSEC
   SignalP predicted secreted proteins
   Phobius predicted secreted proteins
   SPOCTOPUS predicted secreted proteins
   DeepTMHMM predicted secreted proteins
   DeepSig predicted secreted proteins
Human disease related genes
   Congenital disorders of metabolism
   Lysosomal storage diseases
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0005576 [extracellular region]
GO:0015918 [sterol transport]
GO:0032367 [intracellular cholesterol transport]
GO:0032934 [sterol binding]
Show all
174 aa
19.2 kDa
Yes 0

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