Abstract:
:FAT, a new member of the human cadherin super-family, has been isolated from the T-leukemia cell line J6. The predicted protein closely resembles the Drosophila tumor suppressor fat, which is essential for controlling cell proliferation during Drosophila development. The gene has the potential to encode a large transmembrane protein of nearly 4600 residues with 34 tandem cadherin repeats, five EGF-like repeats, and a laminin A-G domain. The cytoplasmic sequence contains two domains with distant homology to the cadherin catenin-binding region. Northern blotting analysis of J6 mRNA demonstrated full-length, approximately 15-kb, FAT message in addition to several 5'-truncated transcripts. In addition to its presence in J6 cells, in situ hybridization revealed FAT mRNA expression in epithelia and in some mesenchymal compartments. Furthermore, higher levels of expression were observed in fetal, as opposed to adult, tissue, suggesting that its expression may be developmentally regulated in these tissues. FAT shows homologies with a number of proteins important in developmental decisions and cell:cell communication and is the first fat-like protein reported in vertebrates. The gene encoding FAT was located by in situ hybridization on chromosome 4q34-q35. We propose that this family of molecules is likely to be important in mammalian developmental processes and cell communication.
journal_name
Genomicsjournal_title
Genomicsauthors
Dunne J,Hanby AM,Poulsom R,Jones TA,Sheer D,Chin WG,Da SM,Zhao Q,Beverley PC,Owen MJdoi
10.1006/geno.1995.9884subject
Has Abstractpub_date
1995-11-20 00:00:00pages
207-23issue
2eissn
0888-7543issn
1089-8646pii
S0888754385798849journal_volume
30pub_type
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