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Structural Analysis of the Murine IgG3 Constant Region Gene

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Journal EMBO J
Date 1984 Sep 1
PMID 6092053
Citations 23
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Abstract

We have determined the complete sequence of the gamma 3 heavy chain constant (C gamma 3) region gene of the BALB/c mouse including the 5'-flanking region up to the switch site and the 3'-flanking region past the end of the membrane exons. The C gamma 3 coding region, typical of other IgGs, is divided into six exons corresponding to the protein domains (C gamma (3)1, hinge, C gamma (3)2, and C gamma (3)3) and to the membrane carboxyl terminus (M1 and M2). The predicted amino acid sequence of the gamma 3 chain has three potential N-linked carbohydrate addition sites (including one in the membrane spacer segment), as compared with a single occurrence in the other mouse IgGs. Between the switch recombination region and the body of the C gamma 3 gene, there is a remarkable homology with a sequence between C mu and C delta which provides a rationale for an alternative, T cell-independent class-switch mechanism. We have used a computer to analyze the secondary structure of the gamma 3 mRNA precursor for the membrane form. We predict that this RNA precursor (approximately 12 000 bp) folds into four leaf-like domains which correspond to the variable region, the large IVS, the body of the constant region, and the membrane exons. This organization may have a role to play in the function of the mRNA precursor.

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References
1.
Potter M . Immunoglobulin-producing tumors and myeloma proteins of mice. Physiol Rev. 1972; 52(3):631-719. DOI: 10.1152/physrev.1972.52.3.631. View

2.
Marshall R . Glycoproteins. Annu Rev Biochem. 1972; 41:673-702. DOI: 10.1146/annurev.bi.41.070172.003325. View

3.
Southern E . Detection of specific sequences among DNA fragments separated by gel electrophoresis. J Mol Biol. 1975; 98(3):503-17. DOI: 10.1016/s0022-2836(75)80083-0. View

4.
Rigby P, Dieckmann M, Rhodes C, Berg P . Labeling deoxyribonucleic acid to high specific activity in vitro by nick translation with DNA polymerase I. J Mol Biol. 1977; 113(1):237-51. DOI: 10.1016/0022-2836(77)90052-3. View

5.
Perlmutter R, Hansburg D, Briles D, Nicolotti R, Davie J . Subclass restriction of murine anti-carbohydrate antibodies. J Immunol. 1978; 121(2):566-72. View