Table II.
Autologous Germ-line Genesa | Heterologous Germ-line Genes (% Identity)b
|
mAb13, Vκ Segment | ||
---|---|---|---|---|
kv3g | kv3″ | kv325 | ||
13K20, 13K23 | 100c | 98.6 | 95.5 | 97.3 |
13K11, 13K12 | 98.6 | 100 | 95.0 | 95.9 |
13K07, 13K09 | 98.2 | 99.4 | 96.4 | 95.4 |
13K04 | 97.3 | 96.3 | 95.0 | 94.5 |
13K18 | 95.5 | 95.5 | 100 | 92.8 |
13K16, 13K17 | 93.2 | 92.8 | 96.4 | 90.5 |
The 10 autologous germ-line VκIII genes were isolated from the PMN DNA of the IDDM patient whose B cells were used for the generation of mAb 13 (Casali et al., J. Immunol. 144:3741, 1990; Ikematsu et al., J. Immunol. 152:1430, 1994).
The germ-line kv3g and kv3g″ genes were originally reported by Pech and Zachau (Nucleic Acids Res. 12:9292, 1984) as Vg and Vg″, respectively. The germ-line kv325 was originally reported by Kipps et al. (Proc. Natl. Acad. Sci. USA 84:2916, 1987).
Percent of identity was calculated for the sequence spanning residues 22 to 243 (Fig. 3). Such sequence may (219 nucleotides in genes kv3g, kv3g″, 13K20/13K23, 13K11/13K12, 13K07/13K09) or may not (222 nucleotides in genes kv325, 13K16/13K17, 13K18) include the AGC triplet deletion in the CDR1 (Fig. 3).