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CSTA
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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.

CSTA
Synonyms STF1, STFA
Gene descriptioni

Full gene name according to HGNC.

Cystatin A
Protein classi

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

Cancer-related genes
Disease related genes
Human disease related genes
Plasma 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.

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 3
Cytoband q21.1
Chromosome location (bp) 122325248 - 122341969
Number of transcriptsi

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

2
Ensembl ENSG00000121552 (version 109)
Entrez gene 1475
HGNC HGNC:2481
UniProt P01040 (UniProt - Evidence at protein level)
neXtProt NX_P01040
GeneCards CSTA
Antibodypedia CSTA antibodies


PROTEIN FUNCTION
Protein function (UniProt)i

Useful information about the protein provided by UniProt.

This is an intracellular thiol proteinase inhibitor. Has an important role in desmosome-mediated cell-cell adhesion in the lower levels of the epidermis.... show less
Molecular function (UniProt)i

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

Protease inhibitor, Thiol protease inhibitor
Biological process (UniProt)i

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

Cell adhesion
Gene summary (Entrez)i

Useful information about the gene from Entrez

The cystatin superfamily encompasses proteins that contain multiple cystatin-like sequences. Some of the members are active cysteine protease inhibitors, while others have lost or perhaps never acquired this inhibitory activity. There are three inhibitory families in the superfamily, including the type 1 cystatins (stefins), type 2 cystatins, and kininogens. This gene encodes a stefin that functions as a cysteine protease inhibitor, forming tight complexes with papain and the cathepsins B, H, and L. The protein is one of the precursor proteins of cornified cell envelope in keratinocytes and plays a role in epidermal development and maintenance. Stefins have been proposed as prognostic and diagnostic tools for cancer. [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 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)
CSTA-201
ENSP00000264474
ENST00000264474
P01040
[Direct mapping] Cystatin-A Cystatin-A, N-terminally processed
Show all
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Plasma proteins
Cancer-related genes
   Candidate cancer biomarkers
Disease related genes
Human disease related genes
   Congenital malformations
   Congenital malformations of skin
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Kim et al 2014)
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0001533 [cornified envelope]
GO:0002020 [protease binding]
GO:0004866 [endopeptidase inhibitor activity]
GO:0004869 [cysteine-type endopeptidase inhibitor activity]
GO:0005515 [protein binding]
GO:0005615 [extracellular space]
GO:0005654 [nucleoplasm]
GO:0005737 [cytoplasm]
GO:0005829 [cytosol]
GO:0007155 [cell adhesion]
GO:0010466 [negative regulation of peptidase activity]
GO:0018149 [peptide cross-linking]
GO:0030216 [keratinocyte differentiation]
GO:0030414 [peptidase inhibitor activity]
GO:0045861 [negative regulation of proteolysis]
GO:0098609 [cell-cell adhesion]
GO:1904090 [peptidase inhibitor complex]
Show all
98 aa
11 kDa
No 0
CSTA-202
ENSP00000418891
ENST00000479204
C9J0E4
[Direct mapping] Cystatin-A
Show all
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Human disease related genes
   Congenital malformations
   Congenital malformations of skin
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0004866 [endopeptidase inhibitor activity]
GO:0004869 [cysteine-type endopeptidase inhibitor activity]
GO:0005737 [cytoplasm]
Show all
63 aa
7.1 kDa
No 0

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