J gene
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  J gene



J gene

    A gene segment coding for the J or joining segment in immunoglobulin DNA; V genes translocate to J segments in L chains, and to D and J segments in H chains. Also, codes for a portion of the T-cell receptor.

RELATED TERMS
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Gene
1. A unit of DNA that carries information for the biosynthesis of a specific product in the cell. 2. Ultimate unit by which inheritable characteristics are transmitted to succeeding generations in all living organisms. Genes are contained by, and arranged along the length of, the chromosome. The gene is composed of deoxyribonucleic acid (DNA). Each chromosome of each species has a definite number and arrangement of genes, which govern both the structure and metabolic functions of the cells and thus of the entire organism.

Immunoglobulin
A serum protein involved in immunity. An antibody.

DNA
Deoxyribo-Nucleic acid. DNA molecules carry the genetic information necessary for the organization and functioning of most living cells and control the inheritance of characteristics.

Genes
Basic, functional units of heredity, each occupying a specific place on a chromosome.

T-cell
A white blood cell concerned with immunity. It does not produce antibodies.

Receptor
A molecule that recognizes a unique hormone. Once that hormone is bound to the receptor, the information carried by the hormone can now exert its biological action.



SIMILAR TERMS
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PREVIOUS AND NEXT TERMS
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Jacket
Crown for a front tooth, usually made of porcelain.

Jaccoud's arthropathy
A non-destructive deforming arthropathy first described in relation to rheumatic fever. Now more commonly seen in relation to SLE.

JCA
Juvenile chronic arthritis - in individuals 16 years or less in age. Must have been present for at least 3 months.

J chain
A polypeptide involved in the polymerization of immunoglobulin molecules IgM and IgA.

Joining chain
A polypeptide involved in the polymerization of immunoglobulin molecules IgM and IgA.

J gene

Juvenilism
The paraphilia of impersonating a juvenile and being treated as one by the partner - one of the stigmatic/eligibilic paraphilias

Jejunum
The middle section of the small intestine between the duodenum and ileum.

Joint
Where the ends of two or more bones meet.

Jugular veins
Veins that carry blood from the head back to the heart.

Johne's Disease
An infection of cattle, sheep and goats cause by Mycobacterium paratuberculosis characterized by diarrhea and thickening and corrugation of the intestinal wall.

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