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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Molecular cloning, chromosome mapping and characterization of a testis-specific cystatin-like cDNA, cystatin T.

The cystatin superfamily of cysteine proteinase inhibitors consists of three major families. In the present study, we report the cloning of the cDNA for mouse cystatin T, which is related to family 2 cystatins. The deduced amino acid sequence of cystatin T contains regions of significant sequence homology including the four highly conserved cysteine residues in exact alignment with all cystatin family 2 members. However, cystatin T lacks some of the conserved motifs believed to be important for inhibition of cysteine proteinase activity. These characteristics are seen in two other recently cloned genes, CRES and Testatin. Thus, cystatin T appears to be the third member of the CRES/Testatin subgroup of family 2 cystatins. The mouse cystatin T gene was mapped on a region of chromosome 2 that contains a cluster of cystatin genes, including cystatin C and CRES. Northern blot analysis demonstrated that expression of mouse cystatin T is highly restricted to the mouse testis. Thus, a shared characteristic of the cystatin family 2 subgroup members is an expression pattern limited primarily to the male reproductive tract.[1]

References

  1. Molecular cloning, chromosome mapping and characterization of a testis-specific cystatin-like cDNA, cystatin T. Shoemaker, K., Holloway, J.L., Whitmore, T.E., Maurer, M., Feldhaus, A.L. Gene (2000) [Pubmed]
 
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