A comprehensive analysis of immunoglobulin heavy chain genes
A comprehensive analysis of immunoglobulin heavy chain genes in the Bactrian camel ( Camelus bactrianus ) Zuoxiang LIANG, Tao WANG, Yi SUN, Wenlong YANG, Zhihong LIU, Jing FEI, Ying GUO, Qingwei MA, Qingjie PAN, Liming REN 1. Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China 2. State Key Laboratory of Agrobiotechnology, China Agricultural University, Beijing 100193, China 3. Laboratory of Animal Molecular Genetics, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Taian 271018, China 4. Key Laboratory of Animal Genetics, Breeding and Reproduction, Inner Mongolia Agricultural University, Hohhot 010018, China 5. Bioyong Technology Inc. , Beijing 100080, China Fig. 4 Comparison of the variability of the VH 3 sequences derived from Ig. M or Ig. G 1 a/b with Ig. G 3 VHH 3 sequences. (a) Amino acid sequence variability plots for the c. DNA sequences of VHH 3 s derived from Ig. G 3 (upper left panel) and VH 3 s derived from Ig. G 1 a/b (lower panels). The variability index was calculated from FR 1 to FR 3 as described in the results section. Grey and open bars represent amino acids in the CDR and FR regions, respectively, and dark gray bars represent residues 27− 30 in the VHH, which we postulate is the extra hypervariable region that has been reported in the literature using Kabat nomenclature. CDR 1 and CDR 2, as defined by IMGT nomenclature, are shaded and placed between the dotted lines; (b) amino acid sequence variability plots comparing the sequences predicted from c. DNA sequences of VH 3 s derived from Ig. M (upper right panel) and VH 3 s derived from Ig. G 1 a/b (lower panels).
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