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

Isolation and characterization of the androgen-dependent mouse cysteine-rich secretory protein-3 (CRISP-3) gene.

The mRNA for cysteine-rich secretory protein-3 (CRISP-3) was originally identified in the mouse salivary gland as an androgen-dependent transcript, and is closely related to CRISP-1 and CRISP-2 which are abundantly expressed in the epididymis and testis respectively. Overlapping phage clones encompassing the entire length of the CRISP-3 gene were isolated from a lambda EMBL3 genomic library and analysed. DNA sequencing revealed that the gene consisted of eight exons ranging between 55 and 740 bp in size, and seven introns. All exon-intron junctions conformed to the GT/AG rule established for eukaryotic genes. The length of the introns was determined by PCR and was found to vary between 1.0 and 3.7 kb, indicating that the gene spans over 20 kb of the mouse genome. Primer extension allowed the mapping of the major transcription initiation site to an adenine located at the appropriate position downstream of a bona fide TATA box, in a region corresponding well to the eukaryotic consensus sequence. Over 800 bp of CRISP-3 promoter region were determined and two regions almost exactly matching the androgen-responsive element consensus RGWACANNNTGTWCY detected. In addition, sequences described in the Drosophila melanogaster Sgs-3 gene as being involved in its salivary gland-specific expression as well as two putative OTF- and GATA-binding elements were also found.[1]

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