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Junctional region of the myelin basic protein-specific T cell receptor beta chain in mice
B Kalman1, H Alder, R L Knobler
1Department of Neurology, Thomas Jefferson University, Philadelphia, PA 19107-5083, USA.
Evidence for the existence of both conserved and diverse amino acid sequences in the junctional regions of the myelin basic protein (MBP)-specific T cell receptors (TCR) in mice is presented. The junctional region of the Nac1-11 MBP peptide-specific, H-2u-restricted TCR beta-chains is characterized by the utilization of similar amino acid sequences. In contrast, diverse junctional sequences within the TCR beta-chains of the p89-101 MBP peptide and H-2s-restricted T cell clones are reported. These findings demonstrate that a limited heterogeneity of the MBP-specific T cell clones does exist. However, it may not be universal even in inbred mouse strains.
Evidence for the existence of both conserved and diverse amino acid sequences in the junctional regions of the myelin basic protein (MBP)-specific T cell receptors (TCR) in mice is presented. The junctional region of the Nac1-11 MBP peptide-specific, H-2u-restricted TCR beta-chains is characterized by the utilization of similar amino acid sequences. In contrast, diverse junctional sequences within the TCR beta-chains of the p89-101 MBP peptide and H-2s-restricted T cell clones are reported. These findings demonstrate that a limited heterogeneity of the MBP-specific T cell clones does exist. However, it may not be universal even in inbred mouse strains.
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