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Comparative Study
. 1993 May 1;90(9):4319-23.
doi: 10.1073/pnas.90.9.4319.

The sizes of the CDR3 hypervariable regions of the murine T-cell receptor beta chains vary as a function of the recombined germ-line segments

C Pannetier  1 , M Cochet, S Darche, A Casrouge, M Zöller, P Kourilsky
Affiliations
Comparative Study

The sizes of the CDR3 hypervariable regions of the murine T-cell receptor beta chains vary as a function of the recombined germ-line segments

C Pannetier et al. Proc Natl Acad Sci U S A. .

Abstract

A method using PCR amplification and primer extension with fluorescent oligonucleotides was developed to analyze T-cell repertoires. The sizes of the hypervariable CDR3-like regions of the murine T-cell antigen receptor beta chains were measured for all possible V beta-J beta combinations. This analysis shows that beta chains are distributed into at least 2000 groups, a value that provides a lower limit to their complexity. The CDR3 sizes appear to be dependent on the J beta and especially the V beta segment used and correlates with amino acid sequence motifs in the corresponding CDR1 region. This feature of T-cell receptors is discussed.

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