TABLE 1.

PCR Primers

Primer sequencea	Restriction site	Target gene
5′-CCGGATCCCCGTATGAAGCGAAGCTAGC-3′	BamHI	sspA
5′-TCAGAATTCATAGTCAGTTTTAGC-3′	EcoRI	sspA
5′-CCGGATCCCCGTATGAGGCTAAGCTAGC-3′	BamHI	sspB
5′-TCAGAATTCATAATCTGTTTTAGC-3′	EcoRI	sspB
5′-CCGGATCCCCGTATGAAGCTAAATTGGC-3′	BamHI	spaP
5′-TCAGAATTCGTAATCAGCTTTAGC-3′	EcoRI	spaP

^aRestriction sites are indicated in boldface.