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Conserved modularity and potential for alternate splicing in mouse and human Slit genes
Melissa Little1, Bree Rumballe, Kylie Georgas
1Institute for Molecular Bioscience and Centre for Functional and Applied Genomics, University of Queensland, St Lucia, Australia. M.Little@imb.uq.edu.au
The International Journal of Developmental Biology
|July 27, 2002
Summary
The vertebrate Slit gene family, comprising Slit1, Slit2, and Slit3, has a defined genomic structure. Alternate splicing generates diverse Slit protein isoforms, impacting cell-cell interactions.
Area of Science:
- Genomics
- Molecular Biology
- Developmental Biology
Background:
- The vertebrate Slit gene family includes Slit1, Slit2, and Slit3.
- Slit proteins contain EGF and LRR motifs crucial for cell interactions.
Purpose of the Study:
- To fully define and characterize the vertebrate Slit gene family's genomic structure.
- To investigate the potential for alternative splicing and isoform generation.
Main Methods:
- Long-distance PCR and in silico mapping to determine genomic structure.
- Analysis of EST and genomic databases to identify Slit family members.
- cDNA library screening to verify alternative splicing.
Main Results:
- All three Slit genes (Slit1, Slit2, Slit3) were characterized in mouse and man.
- Genomic structures revealed modular exon-intron boundaries, with LRR motifs often encoded by single exons.
- Evidence for alternative splicing in Slit2 and confirmation of isoform generation was found.
Conclusions:
- The Slit gene family is fully characterized with no additional members found in mouse or man.
- Genomic modularity supports the generation of multiple Slit protein isoforms through alternative splicing.
- These isoforms likely contribute to the diverse roles of Slit proteins in cell-cell interactions.