Weir R C, Porter R R
Biochem J. 1966 Jul;100(1):69-72. doi: 10.1042/bj1000069.
The antigen-binding capacity of the peptide chains of horse anti-(diphtheria toxin) has been studied by using (125)I-labelled toxoid and electrophoresis of antibody-antigen mixtures on cellulose acetate. The heavy chains retained about 20% of the activity of the whole antibody and the light chains less than 5%. Recombination of specific heavy and light chains gave about 60% recovery of activity and recombination of specific heavy chains and non-specific light chains about 40% recovery. It is suggested that these results favour the heavy chain as the major site of the antigen-binding activity.
通过使用(125)I标记的类毒素以及在醋酸纤维素上对抗体-抗原混合物进行电泳,研究了马抗(白喉毒素)肽链的抗原结合能力。重链保留了整个抗体约20%的活性,轻链保留的活性不到5%。特异性重链和轻链的重组使活性恢复约60%,特异性重链和非特异性轻链的重组使活性恢复约40%。这些结果表明,重链是抗原结合活性的主要位点。