Fig. 6From: Three functional mutation sites affect the immune response of pigs through altering the expression pattern and IgV domain of the CD4 proteinThe localization of two key amino acids and the schema graph of the function of CD4 protein in the immune response of T cells. a The structure of the CD4 protein domain in pigs, which included four extracellular domains, one trans-membrane domain, and one intercellular domain. The three key SNPs (193A/G, 195G/C, and 202C/G) led to two amino acid conversions (65R/G and 68R/G), and these two amino acids were in the IgV1 domain. b The schema graph of the function of the CD4 protein in the immune responseBack to article page