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Sequence and expression of seven new tetraspans
V Serru1, P Dessen, C Boucheix
1INSERM U268, Hôpital Paul Brousse, 94807, Villejuif, France.
Biochimica Et Biophysica Acta
|March 17, 2000
Summary
Researchers identified seven new tetraspan proteins, termed NET-1 to NET-7 (new EST tetraspan). These proteins share typical tetraspan structural features and are expressed differently across human cell lines.
Area of Science:
- Molecular biology
- Cell biology
- Genomics
Background:
- Tetraspans are integral membrane proteins involved in large molecular complexes.
- These complexes often include non-tetraspan molecules, notably integrins.
- Understanding tetraspan superfamily diversity is crucial for cell signaling research.
Purpose of the Study:
- To identify and characterize novel members of the tetraspan protein superfamily.
- To analyze the structural and expression patterns of newly discovered tetraspans.
Main Methods:
- Sequence analysis of newly identified tetraspan candidates (NET-1 to NET-7).
- Bioinformatic analysis to confirm tetraspan structural motifs.
- Differential expression profiling in various human cell lines.
Main Results:
- Identification and sequencing of seven novel tetraspan proteins, designated NET-1 through NET-7.
- Sequence analysis confirmed a conserved tetraspan structure, including four transmembrane domains and characteristic extracellular regions.
- NET proteins exhibit differential expression patterns across different human cell lines.
Conclusions:
- The tetraspan superfamily has expanded with the discovery of the NET family.
- NET proteins possess conserved structural features typical of tetraspans.
- Differential expression suggests specific roles for NET proteins in distinct cellular contexts.