TABLE 1.

Sequences of primers used for mutagenesis

	Primer, 5′–3′
Primer	Forward	Reverse
Purple	GGGCTGGTCCTCAGCACCAAACCAGAAAAAAACTTGGGGTGCAGAAGTTGTCAGATG	CATCTGACAACTTCTGCACCCCAAGTTTTTTTCTGGTTTGGTGCTGAGGACCAGCCC
Yellow	CCGGCACTGCAGTTCCCCACGCAAAAAAACCGTAGGGCCCACATTGCTGCT	AGCAGCAATGTGGGCCCTACGGTTTTTTTGCGTGGGGAACTGCAGTGCCGG
Red	CTCGGGGGCTGGCTCAAGGCCCAAAAAAATAGTCAACACCCCTTCCCTGGG	CCCAGGGAAGGGGTGTTGACTATTTTTTTGGGCCTTGAGCCAGCCCCCGAG