Cystatin A

Cystatin-A is a protein that in humans is encoded by the CSTA gene.[5][6]

CSTA
Available structures
PDBOrtholog search: PDBe RCSB
Identifiers
AliasesCSTA, AREI, STF1, STFA, Cystatin A, PSS4
External IDsOMIM: 184600 MGI: 1924020 HomoloGene: 3819 GeneCards: CSTA
Gene location (Human)
Chr.Chromosome 3 (human)[1]
Band3q21.1Start122,325,248 bp[1]
End122,341,969 bp[1]
RNA expression pattern
More reference expression data
Orthologs
SpeciesHumanMouse
Entrez

1475

76770

Ensembl

ENSG00000121552

ENSMUSG00000095620

UniProt

P01040

Q9D8D6

RefSeq (mRNA)

NM_005213

NM_029733
NM_001384090

RefSeq (protein)

NP_005204

NP_084009
NP_001371019

Location (UCSC)Chr 3: 122.33 – 122.34 MbChr 16: 36.22 – 36.26 Mb
PubMed search[3][4]
Wikidata
View/Edit HumanView/Edit Mouse

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.[6]

Interactions

Cystatin A has been shown to interact with Cathepsin B[7][8] and CTSL1.[8][9]

See also

References

  1. GRCh38: Ensembl release 89: ENSG00000121552 - Ensembl, May 2017
  2. GRCm38: Ensembl release 89: ENSMUSG00000095620 - Ensembl, May 2017
  3. "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. Hsieh WT, Barrick JL, Berrettini WH, Chan MM, Fong D (Jun 1991). "A PstI DNA polymorphism in the human stefin A gene (STF 1)". Nucleic Acids Res. 19 (7): 1722. doi:10.1093/nar/19.7.1722-a. PMC 333958. PMID 1674139.
  6. "Entrez Gene: CSTA cystatin A (stefin A)".
  7. Pavlova, Alona; Björk Ingemar (Sep 2003). "Grafting of features of cystatins C or B into the N-terminal region or second binding loop of cystatin A (stefin A) substantially enhances inhibition of cysteine proteinases". Biochemistry. United States. 42 (38): 11326–33. doi:10.1021/bi030119v. ISSN 0006-2960. PMID 14503883.
  8. Estrada, S; Nycander M; Hill N J; Craven C J; Waltho J P; Björk I (May 1998). "The role of Gly-4 of human cystatin A (stefin A) in the binding of target proteinases. Characterization by kinetic and equilibrium methods of the interactions of cystatin A Gly-4 mutants with papain, cathepsin B, and cathepsin L". Biochemistry. UNITED STATES. 37 (20): 7551–60. doi:10.1021/bi980026r. ISSN 0006-2960. PMID 9585570.
  9. Majerle, Andreja; Jerala Roman (Sep 2003). "Protein inhibitors form complexes with procathepsin L and augment cleavage of the propeptide". Arch. Biochem. Biophys. United States. 417 (1): 53–8. doi:10.1016/S0003-9861(03)00319-9. ISSN 0003-9861. PMID 12921779.

Further reading

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