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The order and orientation of mouse lambda-genes explain lambda-rearrangement patterns.

J Miller¹, S Ogden, M McMullen

¹Department of Molecular Genetics and Cell Biology, University of Chicago, IL 60637.

Journal of Immunology (Baltimore, Md. : 1950)

|October 1, 1988

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Mouse immunoglobulin lambda-genes (Vλ-JλCλ) rearrange with specific partners. Researchers determined the physical basis for these associations, revealing the gene order V2-C2-C4-V1-C3-C1.

Area of Science:

Immunogenetics
Molecular Biology
Genomics

Background:

Mouse immunoglobulin lambda-genes (Vλ-JλCλ) exhibit specific rearrangement patterns.
Understanding the physical organization of these genes is crucial for explaining these associations.

Purpose of the Study:

To determine the physical basis for specific Vλ-JλCλ gene associations in mice.
To elucidate the order and orientation of mouse lambda-gene segments.

Main Methods:

Cloning of lambda-genes and flanking regions using chromosomal walking.
Analysis of DNA deletion patterns in rearranged lambda-genes from cell lines.
Utilizing unique probes from cloned DNA segments.

Main Results:

Related Experiment Videos

The physical map of mouse lambda-genes was established.

All V and C gene segments share the same transcriptional orientation.

The gene order was determined as V2-C2-C4-V1-C3-C1, with V2 and V1 not adjacent.

Conclusions:

The established gene order and orientation provide a physical basis for observed Vλ-JλCλ rearrangement specificities.
This finding contributes to understanding the regulation of immunoglobulin gene assembly.