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. 2019 Oct 15;10:2454. doi: 10.3389/fimmu.2019.02454

Table 1.

Summary of TCR and antibody CDR structural clusters.

TCR-only TCR and antibody
α1 α2 α3 β1 β2 α1/L1 α2/L2 α3/L3 β1/H1 β2/H2
# Sequences 356 329 338 357 360 2817 3168 3210 3404 3328
# Unique sequences 45 44 99 33 39 625 242 954 826 924
Sequence lengths observed 5-8 5-8 8-15 5-6 5-7 5-8/3-12 5-8/2-7 8-15/5-14 5-6/4-15 5-7/6-12
# Canonical classes 7 7 5 1 2 13 3 11 9 7
# Pseudo-classes 3 3 11 1 1 15 14 36 23 17
# Sequences in canonical classes 318 248 126 344 340 2317 2856 2471 2868 2759
# Sequences in pseudo-classes 18 56 74 5 6 299 270 341 205 176
# Unclustered sequences 20 25 138 8 14 201 42 398 331 393

“#” refers to the number of entities. TCR-only clusters are formed at a threshold of 1.0Å; TCR and antibody CDRs are clustered using the standard threshold for antibody CDRs given in Nowak et al. (20). The TCR and antibody CDR sequence lengths observed in the combined TCR and antibody CDR cluster are separated by '‘/”.