Abstract：
:Menin is a protein product of a tumor suppressor gene MEN1, mutations of which are responsible for multiple endocrine neoplasia type 1, an autosomal dominant familial cancer syndrome. We isolated rat menin cDNA clones from a fetal rat brain cDNA library. We also determined the nucleotide sequence of the protein coding region of mouse menin cDNA, which was partly registered in the expressed sequence tag (EST) database. Deduced amino acid sequences of rat and mouse menin are highly homologous to human menin. All of the previously reported disease-associated missense mutations and single amino acid deletions were observed at the residues that are conserved among these three species. Rat MEN1 transcripts were detected not only in the endocrine tissues but also in the tissues of the nervous, digestive, reproductive and immune systems. The MEN1 transcripts were abundantly expressed in the developing rat brain on day 14-18 of gestation. Immunoblotting and immunocytochemical analysis of the COS-7 cells transfected with a rat menin-expression vector revealed that the translated product has a molecular mass of approximately 70 kDa, and is localized mainly in the nucleus. These findings are consistent with those reported on human menin.
journal_name
Mol Cell Endocrinoljournal_title
Molecular and cellular endocrinologyauthors
Maruyama K,Tsukada T,Hosono T,Ohkura N,Kishi M,Honda M,Nara-Ashizawa N,Nagasaki K,Yamaguchi Kdoi
10.1016/s0303-7207(99)00150-1keywords:
subject
Has Abstractpub_date
1999-10-25 00:00:00pages
25-33issue
1-2eissn
0303-7207issn
1872-8057pii
S0303-7207(99)00150-1journal_volume
156pub_type
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