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Genomics. 1998 Mar 1;48(2):178-85.

Cloning and characterization of a novel gene (TM7SF1) encoding a putative seven-pass transmembrane protein that is upregulated during kidney development.

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  • 1Children's Hospital, University of Mainz, Germany. spange@wserv.kinder.klinik.uni-mainz.de

Abstract

We have used the cDNA differential display of mRNA technique to isolate genes differentially regulated during kidney development. Here we report the identification of a novel gene, TM7SF1, which is upregulated in the course of kidney development. The full-length cDNA of TM7SF1 is about 2.4 kb and contains an open reading frame of 1197 nucleotides. The predicted secondary structure of the corresponding protein displays seven putative helical transmembrane domains, a structural feature shared by all members of the G-protein-coupled receptor class of transmembrane proteins. Two minor alternatively spliced versions of approximately 2.3 and approximately 2.2 kb could be detected, one of which contains a nearly identical open reading frame with a truncated carboxy-terminus of the deduced protein. The second alternatively spliced version harbors a completely shifted open reading frame with a potential new ATG start codon. By the use of single-chromosome hybrid cells and fluorescence in situ hybridization experiments, TM7SF1 could be localized to chromosome 1q42-q43. Human multiple tissue Northern blot analysis revealed TM7SF1 transcripts in human kidney, heart, brain, and placenta tissue. Studies on Wilms tumor samples showed variable TM7SF1 expression, ranging from nearly undetectable levels to an abundant level of expression comparable to that of adult kidney tissue.

PMID:
9521871
[PubMed - indexed for MEDLINE]
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