CST5

Cystatin D
PDB rendering based on 1rn7.
Available structures PDB Ortholog search: Template:Homologene2PDBe PDBe, Template:Homologene2uniprot RCSB List of PDB id codes 1rn7​, 1roa​
Identifiers
Symbols	CST5 ; MGC71922
External IDs	Template:OMIM5 Template:MGI HomoloGene: 55615
Gene ontology Molecular function Template:GNF GO
RNA expression pattern
More reference expression data
Orthologs
Template:GNF Ortholog box
Species	Human	Mouse
Entrez	n/a	n/a
Ensembl	n/a	n/a
UniProt	n/a	n/a
RefSeq (mRNA)	n/a	n/a
RefSeq (protein)	n/a	n/a
Location (UCSC)	n/a	n/a
PubMed search	n/a	n/a

Cystatin D, also known as CST5, is a human 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. 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 protein found in saliva and tears. The encoded protein may play a protective role against proteinases present in the oral cavity.

Further reading

• Brown WM, Dziegielewska KM (1997). "Friends and relations of the cystatin superfamily--new members and their evolution". Protein Sci. 6 (1): 5–12. PMID 9007972.
• Freije JP, Abrahamson M, Olafsson I; et al. (1991). "Structure and expression of the gene encoding cystatin D, a novel human cysteine proteinase inhibitor". J. Biol. Chem. 266 (30): 20538–43. PMID 1939105.CS1 maint: Explicit use of et al. (link) CS1 maint: Multiple names: authors list (link)
• Saitoh E, Isemura S, Sanada K; et al. (1989). "Cystatin superfamily. Evidence that family II cystatin genes are evolutionarily related to family III cystatin genes". Biol. Chem. Hoppe-Seyler. 369 Suppl: 191–7. PMID 3202964.CS1 maint: Explicit use of et al. (link) CS1 maint: Multiple names: authors list (link)
• Dickinson DP, Thiesse M, Dempsey LD, Millar SJ (1993). "Genomic cloning, physical mapping, and expression of human type 2 cystatin genes". Crit. Rev. Oral Biol. Med. 4 (3–4): 573–80. PMID 7690606.CS1 maint: Multiple names: authors list (link)
• Dickinson DP, Zhao Y, Thiesse M, Siciliano MJ (1995). "Direct mapping of seven genes encoding human type 2 cystatins to a single site located at 20p11.2". Genomics. 24 (1): 172–5. doi:10.1006/geno.1994.1595. PMID 7896273.CS1 maint: Multiple names: authors list (link)
• Balbín M, Hall A, Grubb A; et al. (1994). "Structural and functional characterization of two allelic variants of human cystatin D sharing a characteristic inhibition spectrum against mammalian cysteine proteinases". J. Biol. Chem. 269 (37): 23156–62. PMID 8083219.CS1 maint: Explicit use of et al. (link) CS1 maint: Multiple names: authors list (link)
• Thiesse M, Millar SJ, Dickinson DP (1994). "The human type 2 cystatin gene family consists of eight to nine members, with at least seven genes clustered at a single locus on human chromosome 20". DNA Cell Biol. 13 (2): 97–116. PMID 8179826.CS1 maint: Multiple names: authors list (link)
• Freije JP, Balbín M, Abrahamson M; et al. (1993). "Human cystatin D. cDNA cloning, characterization of the Escherichia coli expressed inhibitor, and identification of the native protein in saliva". J. Biol. Chem. 268 (21): 15737–44. PMID 8340398.CS1 maint: Explicit use of et al. (link) CS1 maint: Multiple names: authors list (link)
• Freije JP, Pendás AM, Velasco G; et al. (1993). "Localization of the human cystatin D gene (CST5) to chromosome 20p11.21 by in situ hybridization". Cytogenet. Cell Genet. 62 (1): 29–31. PMID 8422752.CS1 maint: Explicit use of et al. (link) CS1 maint: Multiple names: authors list (link)
• Balbín M, Freije JP, Abrahamson M; et al. (1993). "A sequence variation in the human cystatin D gene resulting in an amino acid (Cys/Arg) polymorphism at the protein level". Hum. Genet. 90 (6): 668–9. PMID 8444475.CS1 maint: Explicit use of et al. (link) CS1 maint: Multiple names: authors list (link)
• Deloukas P, Matthews LH, Ashurst J; et al. (2002). "The DNA sequence and comparative analysis of human chromosome 20". Nature. 414 (6866): 865–71. doi:10.1038/414865a. PMID 11780052.CS1 maint: Explicit use of et al. (link) CS1 maint: Multiple names: authors list (link)
• Dickinson DP, Thiesse M, Hicks MJ (2002). "Expression of type 2 cystatin genes CST1-CST5 in adult human tissues and the developing submandibular gland". DNA Cell Biol. 21 (1): 47–65. doi:10.1089/10445490252810311. PMID 11879580.CS1 maint: Multiple names: authors list (link)
• Strausberg RL, Feingold EA, Grouse LH; et al. (2003). "Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences". Proc. Natl. Acad. Sci. U.S.A. 99 (26): 16899–903. doi:10.1073/pnas.242603899. PMID 12477932.CS1 maint: Explicit use of et al. (link) CS1 maint: Multiple names: authors list (link)
• Gerhard DS, Wagner L, Feingold EA; et al. (2004). "The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)". Genome Res. 14 (10B): 2121–7. doi:10.1101/gr.2596504. PMID 15489334.CS1 maint: Explicit use of et al. (link) CS1 maint: Multiple names: authors list (link)
• Alvarez-Fernandez M, Liang YH, Abrahamson M, Su XD (2005). "Crystal structure of human cystatin D, a cysteine peptidase inhibitor with restricted inhibition profile". J. Biol. Chem. 280 (18): 18221–8. doi:10.1074/jbc.M411914200. PMID 15728581.CS1 maint: Multiple names: authors list (link)