Table 3. Nucleotide changes resulting in alanine and aspartate substitutions in linker-2.

Amino acid	Serine DNA codon	Substitution	New DNA codon
Ser-837	AGT	alanine	GCT
Ser-837	AGT	aspartate	GAT
Ser-840	TCC	alanine	GCC
Ser-841	AGC	alanine	GCC
Ser-849	AGC	alanine	GCC
Ser-850	TCT	alanine	GCT
Ser-854	TCC	alanine	GCC