Thomas Wex, Heike Wex, Dieter Brömme
The Human Cathepsin F Gene a Fusion Product between an
Ancestral Cathepsin and Cystatin Gene
Human cathepsin F is a novel papain-like cysteine
protease of unknown function. Here, we describe the
complete human cathepsin F (CTSF) gene which is
composed of 13 exons. In addition to a previous report,
two novel upstream located exons whose splice sites
interrupted the propeptide of cathepsin F within the
‘cystatin-like’ domain, recently described by Nagler
et al. (Biochem. Biophys. Res. Comm. 257, 313–318,
1999) were identified. A comparison of the genomic
structures between this novel part of the cathepsin F
gene and those of several cystatin genes revealed
striking similarities, supporting the hypothesis that
the cathepsin F gene resulted from a gene fusion between
an ancestral cystatin and cathepsin gene.
Biological Chemistry, Walter de Gruyter
Print ISSN: 1431-6730
Volume: 380, 12/1999
Pages: 1439 - 1442
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