Fig. 9

These figures are H-H interactions of sequences after single amino acid mutation. The abscissa is the location of mutated amino acid, and the ordinate is the number of H-H interaction for mutated sequence. The horizonal line is the number of H-H interaction of original sequence. Two vertical lines spit sequence into three equal parts. a is mutational results of sequence B. In this figure, 100% pivotal amino acids locate at beginning or ending of sequence B. b is mutational results of sequence C. In this figure, 100% pivotal amino acids locate at beginning or ending of sequence C. c is mutational results of sequence D. In this figure, 71.4% pivotal amino acids locate at beginning or ending of sequence D. d is mutational results of sequence A ₈. In this figure, 50% pivotal amino acids locate at beginning or ending of sequence A ₈