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  • Title: Gene structure, chromosomal localization, and expression pattern of Capn12, a new member of the calpain large subunit gene family.
    Author: Dear TN, Meier NT, Hunn M, Boehm T.
    Journal: Genomics; 2000 Sep 01; 68(2):152-60. PubMed ID: 10964513.
    Abstract:
    We report the identification of mouse Capn12, a new member of the calpain large subunit gene family. It possesses potential protease and calcium-binding domains, features typical of the classical calpains. In situ hybridization and Northern blot analysis demonstrate that during the anagen phase of the hair cycle the cortex of the hair follicle is the major expression site of Capn12. The gene was sequenced in its entirety and consists of 21 exons spanning 13 kb with an exon-intron structure typical of the calpain gene family. The last exon of the mouse Actn4 gene overlaps the 3' end of Capn12 but in the opposite orientation. This overlap between the two genes is conserved in the human genome. Three versions of the Capn12 mRNA transcript were identified. They occur as a result of alternative splicing, and two of these encode a protein lacking the C-terminal calmodulin-like domain. Radiation hybrid mapping localized Capn12 to mouse chromosome 7, closely linked to a marker positioned at 10.4 cM. Refined mapping of Capn5, also previously localized to chromosome 7, indicated that it was not closely linked to Capn12, mapping tightly linked to a marker positioned at 48.5 cM.
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