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Genomic cloning of the mouse LDL receptor related protein/alpha 2-macroglobulin receptor gene
A van der Zee1, L Stas, C Hilleker
1MGC-Department of Human Genetics, Leiden University, The Netherlands.
Abstract:
The LDL receptor-related protein (LRP) or alpha 2-macroglobulin receptor (A2mr) is encoded by a 15-kb mRNA in mouse and human. Probes encompassing different regions of the mouse cDNA were used to isolate clones from a cosmid library of mouse strain 129. Four overlapping cosmids were used for restriction mapping and Southern blot analysis. This map and hybridization data obtained with oligonucleotide probes from the 5' and 3' ends of the Lrp cDNA demonstrated that the mouse gene is approximately 85 kb in size. The Lrp promoter region was sequenced and reveals strong evolutionary conservation of putative regulatory elements between mouse and human. The present study will facilitate detailed elucidation of the function of LRP in vivo.
Insights
Researchers characterized the LDL receptor-related protein (LRP) gene, determining its approximately 85 kb size and conserved promoter region. This work aids in understanding LRP
Area of Science:
- Genomics
- Molecular Biology
- Mammalian Genetics
Background:
- The LDL receptor-related protein (LRP), also known as alpha 2-macroglobulin receptor (A2mr), plays crucial roles in cellular processes.
- Understanding the genomic structure of LRP is essential for elucidating its biological functions.
Purpose of the Study:
- To characterize the genomic structure of the mouse LDL receptor-related protein (LRP) gene.
- To analyze the evolutionary conservation of the LRP promoter region between mouse and human.
Main Methods:
- Isolation of mouse LRP gene clones from a cosmid library using cDNA probes.
- Restriction mapping and Southern blot analysis of isolated cosmid clones.
- Sequencing of the LRP promoter region.
Main Results:
- The mouse LRP gene spans approximately 85 kb.
- The LRP promoter region exhibits significant evolutionary conservation between mouse and human, suggesting important regulatory functions.
Conclusions:
- The genomic characterization of the mouse LRP gene provides a foundation for further functional studies.
- Conserved regulatory elements in the LRP promoter highlight its importance in gene expression.