Free for academic non-profit institutions. Other users need a Commercial license

Aliases for CST9 Gene

Aliases for CST9 Gene

  • Cystatin 9 (Testatin) 2 3
  • Cystatin-Like Molecule 3 4
  • CLM 3 4
  • CTES7A 3

External Ids for CST9 Gene

Previous GeneCards Identifiers for CST9 Gene

  • GC20M023579
  • GC20M023532
  • GC20M023534
  • GC20M023535
  • GC20M023536
  • GC20M023537
  • GC20M023538
  • GC20M023539
  • GC20M023541

Summaries for CST9 Gene

Entrez Gene Summary for CST9 Gene

  • 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 the kininogens. The type 2 cystatin proteins are a class of cysteine proteinase inhibitors found in a variety of human fluids and secretions, where they appear to provide protective functions. The cystatin locus on chromosome 20 contains the majority of the type 2 cystatin genes and pseudogenes. This gene is located in the cystatin locus and encodes a secreted protein that may play a role in hematopoietic differentiation or inflammation. [provided by RefSeq, Jul 2008]

GeneCards Summary for CST9 Gene

CST9 (Cystatin 9 (Testatin)) is a Protein Coding gene. Diseases associated with CST9 include breast adenocarcinoma. GO annotations related to this gene include cysteine-type endopeptidase inhibitor activity. An important paralog of this gene is CST9L.

UniProtKB/Swiss-Prot for CST9 Gene

  • May play a role in hematopoietic differentiation or inflammation

No data available for Tocris Summary , Gene Wiki entry , PharmGKB "VIP" Summary , fRNAdb sequence ontologies and piRNA Summary for CST9 Gene

Genomics for CST9 Gene

Regulatory Elements for CST9 Gene

Genomic Location for CST9 Gene

23,602,410 bp from pter
23,605,973 bp from pter
3,564 bases
Minus strand

Genomic View for CST9 Gene

UCSC Golden Path with GeneCards custom track
Cytogenetic band:
Genomic Location for CST9 Gene
GeneLoc Logo Genomic Neighborhood Exon StructureGene Density

RefSeq DNA sequence for CST9 Gene

Proteins for CST9 Gene

  • Protein details for CST9 Gene (UniProtKB/Swiss-Prot)

    Protein Symbol:
    Recommended name:
    Protein Accession:
    Secondary Accessions:
    • B2RP76
    • Q8TD53

    Protein attributes for CST9 Gene

    159 amino acids
    Molecular mass:
    18135 Da
    Quaternary structure:
    No Data Available

neXtProt entry for CST9 Gene

Proteomics data for CST9 Gene at MOPED

Post-translational modifications for CST9 Gene

No Post-translational modifications

Other Protein References for CST9 Gene

ENSEMBL proteins:
REFSEQ proteins:

Antibody Products

No data available for DME Specific Peptides for CST9 Gene

Domains & Families for CST9 Gene

Gene Families for CST9 Gene

Protein Domains for CST9 Gene


Suggested Antigen Peptide Sequences for CST9 Gene

GenScript: Design optimal peptide antigens:

Graphical View of Domain Structure for InterPro Entry



  • Belongs to the cystatin family.
  • Belongs to the cystatin family.
genes like me logo Genes that share domains with CST9: view

Function for CST9 Gene

Molecular function for CST9 Gene

UniProtKB/Swiss-Prot Function:
May play a role in hematopoietic differentiation or inflammation
UniProtKB/Swiss-Prot Induction:
Up-regulated by bacterial lipopolysaccharides (LPS), in some cancer cells such as promyelocytic leukemia cells (HL-60) or myelomonocytic leukemia cells (U-937).

Gene Ontology (GO) - Molecular Function for CST9 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0004869 cysteine-type endopeptidase inhibitor activity IEA --
genes like me logo Genes that share ontologies with CST9: view

Phenotypes for CST9 Gene

GenomeRNAi human phenotypes for CST9:
genes like me logo Genes that share phenotypes with CST9: view

Animal Model Products

miRNA Products

Inhibitory RNA Products

  • Predesigned siRNA for gene silencing in human,mouse,rat for CST9

In Situ Assay Products

Flow Cytometry Products

No data available for Enzyme Numbers (IUBMB) , Animal Models , Transcription Factor Targets and HOMER Transcription for CST9 Gene

Localization for CST9 Gene

Subcellular locations from UniProtKB/Swiss-Prot for CST9 Gene

Secreted. Note=May be targeted through the Golgi via the secretory pathway.

Subcellular locations from

Jensen Localization Image for CST9 Gene COMPARTMENTS Subcellular localization image for CST9 gene
Compartment Confidence
extracellular 3
golgi apparatus 1

Gene Ontology (GO) - Cellular Components for CST9 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0005576 extracellular region IEA --
genes like me logo Genes that share ontologies with CST9: view

Pathways & Interactions for CST9 Gene

SuperPathways for CST9 Gene

No Data Available

Interacting Proteins for CST9 Gene

Gene Ontology (GO) - Biological Process for CST9 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0010951 negative regulation of endopeptidase activity IEA --
genes like me logo Genes that share ontologies with CST9: view

No data available for Pathways by source and SIGNOR curated interactions for CST9 Gene

Drugs & Compounds for CST9 Gene

No Compound Related Data Available

Transcripts for CST9 Gene

mRNA/cDNA for CST9 Gene

(2) REFSEQ mRNAs :
(3) Additional mRNA sequences :
(32) Selected AceView cDNA sequences:
(1) Ensembl transcripts including schematic representations, and UCSC links where relevant :

Unigene Clusters for CST9 Gene

Cystatin 9 (testatin):
Representative Sequences:

miRNA Products

Inhibitory RNA Products

  • Predesigned siRNA for gene silencing in human,mouse,rat for CST9

Flow Cytometry Products

Alternative Splicing Database (ASD) splice patterns (SP) for CST9 Gene

No ASD Table

Relevant External Links for CST9 Gene

GeneLoc Exon Structure for
ECgene alternative splicing isoforms for

Expression for CST9 Gene

mRNA expression in normal human tissues for CST9 Gene

mRNA differential expression in normal tissues according to GTEx for CST9 Gene

This gene is overexpressed in Breast - Mammary Tissue (x26.5), Esophagus - Muscularis (x11.8), Kidney - Cortex (x5.4), and Esophagus - Gastroesophageal Junction (x4.3).

SOURCE GeneReport for Unigene cluster for CST9 Gene Hs.698020

mRNA Expression by UniProt/SwissProt for CST9 Gene

Tissue specificity: Expressed in heart, placenta, lung, liver, skeletal muscle and pancreas. Not expressed in brain. Barely expressed in tumor cell lines except for breast adenocarcinoma MCF-7 cells and U-251MG cells.
genes like me logo Genes that share expression patterns with CST9: view

Primer Products

  • QuantiTect SYBR Green Assays in human,mouse,rat
  • Pre-validated RT² qPCR Primer Assay in human,mouse,rat
  • QuantiFast Probe-based Assays in human,mouse,rat

In Situ Assay Products

No data available for mRNA expression in embryonic tissues and stem cells from LifeMap Discovery , Protein differential expression in normal tissues , Protein expression and Protein tissue co-expression partners for CST9 Gene

Orthologs for CST9 Gene

This gene was present in the common ancestor of mammals.

Orthologs for CST9 Gene

Organism Taxonomy Gene Similarity Type Details
(Pan troglodytes)
Mammalia CST9 35
  • 98.53 (n)
  • 96.23 (a)
CST9 36
  • 96 (a)
(Bos Taurus)
Mammalia MGC133636 36
  • 30 (a)
(Canis familiaris)
Mammalia -- 36
  • 26 (a)
(Mus musculus)
Mammalia Cst9 36
  • 42 (a)
Species with no ortholog for CST9:
  • A. gosspyii yeast (Ashbya gossypii)
  • Actinobacteria (Mycobacterium tuberculosis)
  • African clawed frog (Xenopus laevis)
  • African malaria mosquito (Anopheles gambiae)
  • Alicante grape (Vitis vinifera)
  • alpha proteobacteria (Wolbachia pipientis)
  • amoeba (Dictyostelium discoideum)
  • Archea (Pyrococcus horikoshii)
  • baker's yeast (Saccharomyces cerevisiae)
  • barley (Hordeum vulgare)
  • beta proteobacteria (Neisseria meningitidis)
  • bread mold (Neurospora crassa)
  • chicken (Gallus gallus)
  • Chromalveolata (Phytophthora infestans)
  • common water flea (Daphnia pulex)
  • corn (Zea mays)
  • E. coli (Escherichia coli)
  • filamentous fungi (Aspergillus nidulans)
  • Firmicute bacteria (Streptococcus pneumoniae)
  • fission yeast (Schizosaccharomyces pombe)
  • fruit fly (Drosophila melanogaster)
  • green algae (Chlamydomonas reinhardtii)
  • honey bee (Apis mellifera)
  • K. lactis yeast (Kluyveromyces lactis)
  • lizard (Anolis carolinensis)
  • loblloly pine (Pinus taeda)
  • malaria parasite (Plasmodium falciparum)
  • medicago trunc (Medicago Truncatula)
  • moss (Physcomitrella patens)
  • oppossum (Monodelphis domestica)
  • orangutan (Pongo pygmaeus)
  • pig (Sus scrofa)
  • platypus (Ornithorhynchus anatinus)
  • rainbow trout (Oncorhynchus mykiss)
  • rat (Rattus norvegicus)
  • rice (Oryza sativa)
  • rice blast fungus (Magnaporthe grisea)
  • schistosome parasite (Schistosoma mansoni)
  • sea anemone (Nematostella vectensis)
  • sea squirt (Ciona intestinalis)
  • sea squirt (Ciona savignyi)
  • sea urchin (Strongylocentrotus purpuratus)
  • sorghum (Sorghum bicolor)
  • soybean (Glycine max)
  • stem rust fungus (Puccinia graminis)
  • sugarcane (Saccharum officinarum)
  • thale cress (Arabidopsis thaliana)
  • tomato (Lycopersicon esculentum)
  • toxoplasmosis (Toxoplasma gondii)
  • Trichoplax (Trichoplax adhaerens)
  • tropical clawed frog (Silurana tropicalis)
  • wheat (Triticum aestivum)
  • worm (Caenorhabditis elegans)
  • zebrafish (Danio rerio)

Evolution for CST9 Gene

Gene Tree for CST9 (if available)
Gene Tree for CST9 (if available)

Paralogs for CST9 Gene

Paralogs for CST9 Gene

(2) SIMAP similar genes for CST9 Gene using alignment to 1 proteins:

genes like me logo Genes that share paralogs with CST9: view

Variants for CST9 Gene

Sequence variations from dbSNP and Humsavar for CST9 Gene

SNP ID Clin Chr 20 pos Sequence Context AA Info Type MAF
rs726216 -- 23,603,594(-) CCTCA(A/G)GTCCA synonymous-codon, reference, intron-variant
rs726217 -- 23,603,479(-) CCCTG(C/T)TTGTG utr-variant-3-prime, intron-variant
rs1966182 -- 23,605,922(+) TGGAG(C/T)CTTCC utr-variant-5-prime
rs2983638 -- 23,602,461(+) GGACA(A/G)TGAGG utr-variant-3-prime
rs2983639 -- 23,605,547(+) AGACA(C/T)CTTGG intron-variant

Variation tolerance for CST9 Gene

Residual Variation Intolerance Score: 81.68% of all genes are more intolerant (likely to be disease-causing)
Gene Damage Index Score: 6.03; 75.08% of all genes are more intolerant (likely to be disease-causing)

Relevant External Links for CST9 Gene

HapMap Linkage Disequilibrium report
Human Gene Mutation Database (HGMD)

No data available for Polymorphic Variants from UniProtKB/Swiss-Prot and Structural Variations from Database of Genomic Variants (DGV) for CST9 Gene

Disorders for CST9 Gene

MalaCards: The human disease database

(1) MalaCards diseases for CST9 Gene - From: DISEASES and GeneCards

Disorder Aliases PubMed IDs
breast adenocarcinoma
  • mammary adenocarcinoma
- elite association
Search CST9 in MalaCards View complete list of genes associated with diseases

Relevant External Links for CST9

Genetic Association Database (GAD)
Human Genome Epidemiology (HuGE) Navigator
Atlas of Genetics and Cytogenetics in Oncology and Haematology:
genes like me logo Genes that share disorders with CST9: view

No data available for UniProtKB/Swiss-Prot and Genatlas for CST9 Gene

Publications for CST9 Gene

  1. Evolution and human tissue expression of the Cres/Testatin subgroup genes, a reproductive tissue specific subgroup of the type 2 cystatins. (PMID: 20565543) Frygelius J. … TAPhAPnen V. (Evol. Dev. 2010) 2 67
  2. Molecular cloning and characterization of a novel cystatin-like molecule, CLM, from human bone marrow stromal cells. (PMID: 12535658) Sun H. … Cao X. (Biochem. Biophys. Res. Commun. 2003) 23 67
  3. The BioPlex Network: A Systematic Exploration of the Human Interactome. (PMID: 26186194) Huttlin E.L. … Gygi S.P. (Cell 2015) 67
  4. Immunomodulatory and antibacterial effects of cystatin 9 against Francisella tularensis. (PMID: 23922243) Eaves-Pyles T. … Almeida I.C. (Mol. Med. 2013) 67
  5. New loci associated with kidney function and chronic kidney disease. (PMID: 20383146) KAPttgen A. … Fox C.S. (Nat. Genet. 2010) 67

Products for CST9 Gene

Sources for CST9 Gene

Back to Top