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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.

CTSA
Synonyms GSL, PPGB
Gene descriptioni

Full gene name according to HGNC.

Cathepsin A
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.

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 20
Cytoband q13.12
Chromosome location (bp) 45890144 - 45898949
Number of transcriptsi

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

9
Ensembl ENSG00000064601 (version 109)
Entrez gene 5476
HGNC HGNC:9251
UniProt P10619 (UniProt - Evidence at protein level)
neXtProt NX_P10619
GeneCards CTSA
Antibodypedia CTSA antibodies


PROTEIN FUNCTION
Protein function (UniProt)i

Useful information about the protein provided by UniProt.

Protective protein appears to be essential for both the activity of beta-galactosidase and neuraminidase, it associates with these enzymes and exerts a protective function necessary for their stability and activity. This protein is also a carboxypeptidase and can deamidate tachykinins.... show less
Molecular function (UniProt)i

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

Carboxypeptidase, Hydrolase, Protease
Gene summary (Entrez)i

Useful information about the gene from Entrez

This gene encodes a member of the peptidase S10 family of serine carboxypeptidases. Alternative splicing results in multiple transcript variants, at least one of which encodes a preproprotein that is proteolytically processed to generate two chains that comprise the heterodimeric active enzyme. This enzyme possesses deamidase, esterase and carboxypeptidase activities and acts as a scaffold in the lysosomal multienzyme complex. Mutations in this gene are associated with galactosialidosis. [provided by RefSeq, Nov 2015]... 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)
CTSA-201
ENSP00000191018
ENST00000191018
P10619
[Direct mapping] Lysosomal protective protein Lysosomal protective protein 32 kDa chain Lysosomal protective protein 20 kDa chain
Show all
Enzymes
   ENZYME proteins
   Hydrolases
   Peptidases
   Serine-type peptidases
Metabolic proteins
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   THUMBUP predicted membrane 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
Predicted intracellular proteins
Disease related genes
Potential drug targets
Human disease related genes
   Congenital disorders of metabolism
   Congenital disorders of glycan/glycoprotein 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:0004180 [carboxypeptidase activity]
GO:0004185 [serine-type carboxypeptidase activity]
GO:0005576 [extracellular region]
GO:0005764 [lysosome]
GO:0005783 [endoplasmic reticulum]
GO:0006508 [proteolysis]
GO:0006886 [intracellular protein transport]
GO:0008047 [enzyme activator activity]
GO:0008233 [peptidase activity]
GO:0016020 [membrane]
GO:0016787 [hydrolase activity]
GO:0031647 [regulation of protein stability]
GO:0035578 [azurophil granule lumen]
GO:0043202 [lysosomal lumen]
GO:0043231 [intracellular membrane-bounded organelle]
GO:0070062 [extracellular exosome]
GO:0098575 [lumenal side of lysosomal membrane]
GO:1904714 [regulation of chaperone-mediated autophagy]
GO:1904715 [negative regulation of chaperone-mediated autophagy]
Show all
480 aa
54.5 kDa
Yes 0
CTSA-202
ENSP00000346952
ENST00000354880
X6R5C5
[Direct mapping] Carboxypeptidase
Show all
Metabolic proteins
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   THUMBUP predicted membrane 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
Predicted intracellular proteins
Human disease related genes
   Congenital disorders of metabolism
   Congenital disorders of glycan/glycoprotein metabolism
   Lysosomal storage diseases
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0004180 [carboxypeptidase activity]
GO:0004185 [serine-type carboxypeptidase activity]
GO:0006508 [proteolysis]
GO:0008233 [peptidase activity]
GO:0016787 [hydrolase activity]
GO:0043231 [intracellular membrane-bounded organelle]
Show all
463 aa
52.5 kDa
Yes 0
CTSA-203
ENSP00000361537
ENST00000372459
P10619
[Direct mapping] Lysosomal protective protein Lysosomal protective protein 32 kDa chain Lysosomal protective protein 20 kDa chain
Show all
Enzymes
   ENZYME proteins
   Hydrolases
   Peptidases
   Serine-type peptidases
Metabolic proteins
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   THUMBUP predicted membrane 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
Predicted intracellular proteins
Disease related genes
Potential drug targets
Human disease related genes
   Congenital disorders of metabolism
   Congenital disorders of glycan/glycoprotein metabolism
   Lysosomal storage diseases
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0004180 [carboxypeptidase activity]
GO:0004185 [serine-type carboxypeptidase activity]
GO:0005576 [extracellular region]
GO:0005764 [lysosome]
GO:0005783 [endoplasmic reticulum]
GO:0006508 [proteolysis]
GO:0006886 [intracellular protein transport]
GO:0008047 [enzyme activator activity]
GO:0008233 [peptidase activity]
GO:0016020 [membrane]
GO:0016787 [hydrolase activity]
GO:0031647 [regulation of protein stability]
GO:0035578 [azurophil granule lumen]
GO:0043202 [lysosomal lumen]
GO:0043231 [intracellular membrane-bounded organelle]
GO:0070062 [extracellular exosome]
GO:0098575 [lumenal side of lysosomal membrane]
GO:1904714 [regulation of chaperone-mediated autophagy]
GO:1904715 [negative regulation of chaperone-mediated autophagy]
Show all
480 aa
54.5 kDa
Yes 0
CTSA-204
ENSP00000361562
ENST00000372484
X6R8A1
[Direct mapping] Carboxypeptidase
Show all
Metabolic proteins
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   THUMBUP predicted membrane proteins
   Secreted proteins predicted by MDSEC
   SignalP predicted secreted proteins
   Phobius predicted secreted proteins
   SPOCTOPUS predicted secreted proteins
   DeepTMHMM predicted secreted proteins
Predicted intracellular proteins
Human disease related genes
   Congenital disorders of metabolism
   Congenital disorders of glycan/glycoprotein metabolism
   Lysosomal storage diseases
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0004180 [carboxypeptidase activity]
GO:0004185 [serine-type carboxypeptidase activity]
GO:0006508 [proteolysis]
GO:0008233 [peptidase activity]
GO:0016787 [hydrolase activity]
GO:0043231 [intracellular membrane-bounded organelle]
Show all
498 aa
56.2 kDa
Yes 0
CTSA-205
ENSP00000408533
ENST00000419493
Q5JZH0
[Direct mapping] Carboxypeptidase
Show all
Metabolic proteins
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   SCAMPI predicted membrane proteins
   THUMBUP predicted membrane 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
Predicted intracellular proteins
Human disease related genes
   Congenital disorders of metabolism
   Congenital disorders of glycan/glycoprotein metabolism
   Lysosomal storage diseases
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0004180 [carboxypeptidase activity]
GO:0004185 [serine-type carboxypeptidase activity]
GO:0006508 [proteolysis]
GO:0008233 [peptidase activity]
GO:0016787 [hydrolase activity]
GO:0043231 [intracellular membrane-bounded organelle]
Show all
392 aa
43.1 kDa
Yes 0
CTSA-217
ENSP00000475524
ENST00000607482
P10619
[Direct mapping] Lysosomal protective protein Lysosomal protective protein 32 kDa chain Lysosomal protective protein 20 kDa chain
Show all
U3KQ41
[Direct mapping] Lysosomal protective protein
Show all
Enzymes
   ENZYME proteins
   Hydrolases
   Peptidases
   Serine-type peptidases
Metabolic proteins
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   THUMBUP predicted membrane 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
Predicted intracellular proteins
Disease related genes
Potential drug targets
Human disease related genes
   Congenital disorders of metabolism
   Congenital disorders of glycan/glycoprotein metabolism
   Lysosomal storage diseases
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0004180 [carboxypeptidase activity]
GO:0004185 [serine-type carboxypeptidase activity]
GO:0005576 [extracellular region]
GO:0005764 [lysosome]
GO:0005783 [endoplasmic reticulum]
GO:0006508 [proteolysis]
GO:0006886 [intracellular protein transport]
GO:0008047 [enzyme activator activity]
GO:0008233 [peptidase activity]
GO:0016020 [membrane]
GO:0016787 [hydrolase activity]
GO:0031647 [regulation of protein stability]
GO:0035578 [azurophil granule lumen]
GO:0043202 [lysosomal lumen]
GO:0043231 [intracellular membrane-bounded organelle]
GO:0070062 [extracellular exosome]
GO:0098575 [lumenal side of lysosomal membrane]
GO:1904714 [regulation of chaperone-mediated autophagy]
GO:1904715 [negative regulation of chaperone-mediated autophagy]
Show all
480 aa
54.5 kDa
Yes 0
CTSA-220
ENSP00000493613
ENST00000646241
P10619
[Direct mapping] Lysosomal protective protein Lysosomal protective protein 32 kDa chain Lysosomal protective protein 20 kDa chain
Show all
Enzymes
   ENZYME proteins
   Hydrolases
   Peptidases
   Serine-type peptidases
Metabolic proteins
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   THUMBUP predicted membrane 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
Predicted intracellular proteins
Disease related genes
Potential drug targets
Human disease related genes
   Congenital disorders of metabolism
   Congenital disorders of glycan/glycoprotein metabolism
   Lysosomal storage diseases
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0004180 [carboxypeptidase activity]
GO:0004185 [serine-type carboxypeptidase activity]
GO:0005576 [extracellular region]
GO:0005764 [lysosome]
GO:0005783 [endoplasmic reticulum]
GO:0006508 [proteolysis]
GO:0006886 [intracellular protein transport]
GO:0008047 [enzyme activator activity]
GO:0008233 [peptidase activity]
GO:0016020 [membrane]
GO:0016787 [hydrolase activity]
GO:0031647 [regulation of protein stability]
GO:0035578 [azurophil granule lumen]
GO:0043202 [lysosomal lumen]
GO:0043231 [intracellular membrane-bounded organelle]
GO:0070062 [extracellular exosome]
GO:0098575 [lumenal side of lysosomal membrane]
GO:1904714 [regulation of chaperone-mediated autophagy]
GO:1904715 [negative regulation of chaperone-mediated autophagy]
Show all
480 aa
54.5 kDa
Yes 0
CTSA-225
ENSP00000504790
ENST00000677394
X6R8A1
[Direct mapping] Carboxypeptidase
Show all
Metabolic proteins
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   THUMBUP predicted membrane proteins
   Secreted proteins predicted by MDSEC
   SignalP predicted secreted proteins
   Phobius predicted secreted proteins
   SPOCTOPUS predicted secreted proteins
   DeepTMHMM predicted secreted proteins
Predicted intracellular proteins
Human disease related genes
   Congenital disorders of metabolism
   Congenital disorders of glycan/glycoprotein metabolism
   Lysosomal storage diseases
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0004180 [carboxypeptidase activity]
GO:0004185 [serine-type carboxypeptidase activity]
GO:0006508 [proteolysis]
GO:0008233 [peptidase activity]
GO:0016787 [hydrolase activity]
GO:0043231 [intracellular membrane-bounded organelle]
Show all
498 aa
56.2 kDa
Yes 0
CTSA-232
ENSP00000504006
ENST00000678443
A0A7I2V4K5
[Direct mapping] Carboxypeptidase
Show all
Metabolic proteins
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   THUMBUP predicted membrane 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
Predicted intracellular proteins
Human disease related genes
   Congenital disorders of metabolism
   Congenital disorders of glycan/glycoprotein metabolism
   Lysosomal storage diseases
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0004180 [carboxypeptidase activity]
GO:0004185 [serine-type carboxypeptidase activity]
GO:0006508 [proteolysis]
GO:0008233 [peptidase activity]
GO:0016787 [hydrolase activity]
Show all
450 aa
50.9 kDa
Yes 0

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