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The Sequence of the Mycoplasma Arthritidis Superantigen, MAM: Identification of Functional Domains and Comparison with Microbial Superantigens and Plant Lectin Mitogens

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Journal J Exp Med
Date 1996 Mar 1
PMID 8642252
Citations 18
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Abstract

Mycoplasma arthritidis, an agent of chronic proliferative arthritis of rodents, secretes a potent soluble superantigen, MAM, that is active for both murine and human T and B lymphocytes. We now report the complete nucleotide and amino acid sequence of MAM and show it to be distinct from other proteins and not closely related phylogenetically to other superantigens. Two functional domains on MAM are identified based on the ability of peptides encompassing these regions to inhibit lymphocyte proliferation by the intact MAM molecule. One of these domains shares short sequences or epitopes with other microbial superantigens. The second domain contains the consensus legume lectin motif-beta, which is important for T cell activation by concanavalin (Con) A. MAM and Con A peptides containing this motif are functionally cross reactive, suggesting a novel secondary pathway for T cell activation by MAM.

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References
1.
Garnier J, Osguthorpe D, Robson B . Analysis of the accuracy and implications of simple methods for predicting the secondary structure of globular proteins. J Mol Biol. 1978; 120(1):97-120. DOI: 10.1016/0022-2836(78)90297-8. View

2.
Ito Y, Abe J, Yoshino K, Takeda T, Kohsaka T . Sequence analysis of the gene for a novel superantigen produced by Yersinia pseudotuberculosis and expression of the recombinant protein. J Immunol. 1995; 154(11):5896-906. View

3.
Hopp T, Woods K . Prediction of protein antigenic determinants from amino acid sequences. Proc Natl Acad Sci U S A. 1981; 78(6):3824-8. PMC: 319665. DOI: 10.1073/pnas.78.6.3824. View

4.
Atkin C, Cole B, Sullivan G, Washburn L, Wiley B . Stimulation of mouse lymphocytes by a mitogen derived from Mycoplasma arthritidis. V. A small basic protein from culture supernatants is a potent T cell mitogen. J Immunol. 1986; 137(5):1581-9. View

5.
Derewenda Z, Yariv J, Helliwell J, Kalb A, Dodson E, Papiz M . The structure of the saccharide-binding site of concanavalin A. EMBO J. 1989; 8(8):2189-93. PMC: 401146. DOI: 10.1002/j.1460-2075.1989.tb08341.x. View