Abstract:
:The human Lutheran (Lu) blood group antigens are carried by two glycoproteins (gps) that belong to the immunoglobulin (Ig) superfamily. These gps represent adhesion molecules that function as the unique erythroid receptors for laminin. We report here the cloning and functional expression of the orthologous mouse Lu mRNA as well as the genomic organization of the mouse Lu gene. The deduced human and mouse Lu gps share 72.5% identity and similar organization of the Ig-like domains. As in the human, the mouse Lu gene is organized in 15 exons. The proximal promoter showed consensus CACC-binding sites whereas the distal promoter exhibits a GATA-1-binding site and multiple E boxes. Like the human gene, the mouse Lu gene is also widely expressed among tissues but is transcribed as a unique 2.4-kb mRNA species. Expression of the mouse Lu mRNA is upregulated upon dimethyl sulfoxide-induced erythroid differentiation of murine erythroleukemia cells (MEL). During mouse embryonic development, the Lu transcript is detected as early as day 7 of gestation. Analysis of transfected human erythroleukemia K562 cells indicated that the adhesive properties of the Lu gps to laminin are conserved between human and mouse.
journal_name
Immunogeneticsjournal_title
Immunogeneticsauthors
Rahuel C,Colin Y,Goossens D,Gane P,El Nemer W,Cartron JP,Le Van Kim Cdoi
10.1007/s002510050602subject
Has Abstractpub_date
1999-12-01 00:00:00pages
271-7issue
5-6eissn
0093-7711issn
1432-1211journal_volume
50pub_type
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